Limb Salvage Alternative | Ankle-to-Knee Conversion | Borggreve-Van Nes Procedure
Van Nes Classification (Rotationplasty Types)
Critical Must-Knows
- Rotationplasty rotates the distal limb 180 degrees so ankle functions as knee joint
- Ideal candidates: skeletally immature patients with distal femur or proximal tibia tumours
- Functional outcomes are generally good to excellent, with reported MSTS scores spanning ~60-85% and frequently favourable versus above-knee amputation
- Position the heel 2-3cm above contralateral knee joint to allow for growth
- Psychological preparation and patient selection are critical for success
Clinical Pearls
- "Know the Van Nes classification and which type applies to distal femur versus proximal tibia tumours
- "Sciatic nerve preservation is critical - must maintain at least 15cm length
- "Discuss the cosmetic versus functional trade-off in patient counselling
- "Compare outcomes with above-knee amputation and endoprosthetic replacement
Critical Rotationplasty Exam Points
Patient Selection
Ideal candidate: Skeletally immature child (age 6-12) with distal femur or proximal tibia tumour. Requires intact sciatic nerve, adequate vessel length, and no metastatic disease. Psychological assessment and family counselling are mandatory.
180-Degree Rotation
The limb is rotated 180 degrees so that plantarflexion of the ankle produces knee extension motion. The rotated ankle joint becomes the functional knee joint, powered by the gastrocnemius-soleus complex.
Positioning the Heel
Position heel 2-3cm above contralateral knee in growing children to account for growth potential. This ensures the prosthetic knee joint aligns properly at skeletal maturity. Too high causes leg length inequality.
Functional Outcomes
Reported MSTS scores ~60-85% - generally favourable versus above-knee amputation and comparable to endoprosthetic replacement, though long-term series report a wide range (e.g. mean 64% at 14 years). Patients can typically run, jump, swim, and participate in sport. No stump or implant-loosening issues.
At a Glance
Rotationplasty (Borggreve-Van Nes procedure) is a limb-salvage surgical technique used primarily for malignant bone tumours of the distal femur or proximal tibia in skeletally immature patients. The procedure involves en bloc resection of the tumour-bearing segment followed by 180-degree rotation of the distal limb, so that the ankle joint becomes the functional knee joint. The rotated foot is then fitted with a below-knee prosthesis. First described by Borggreve in 1930 and later popularized by Van Nes, this technique offers good-to-excellent functional outcomes (reported MSTS ~60-85%) while avoiding the revision burden associated with expandable endoprostheses in growing children. Despite its unusual cosmetic appearance, long-term studies demonstrate quality of life and psychosocial functioning approaching those of healthy peers in appropriately selected and counselled patients.
ROTATERotationplasty Indications
| R | Resectable tumour En bloc resection achievable with clear margins |
| O | Open physes preferred Skeletally immature patients benefit most (avoids multiple revisions) |
| T | Tumour location distal femur or proximal tibia Classic indication for rotationplasty |
| A | Adequate sciatic nerve length At least 15cm preserved for rotation without tension |
| T | Tibial and femoral vessels intact Vascular supply must allow rotation without kinking |
| E | Emotionally prepared patient Psychological assessment and family counselling essential |
| R | Resectable tumour En bloc resection achievable with clear margins | T | Tumour location distal femur or proximal tibia Classic indication for rotationplasty | T | Tibial and femoral vessels intact Vascular supply must allow rotation without kinking |
| O | Open physes preferred Skeletally immature patients benefit most (avoids multiple revisions) | A | Adequate sciatic nerve length At least 15cm preserved for rotation without tension | E | Emotionally prepared patient Psychological assessment and family counselling essential |
Hook:ROTATE the limb for tumour resection when the patient can emotionally and physically adapt!
TWISTSurgical Principles
| T | Tumour resection with clear margins Oncological principles take priority - wide or radical excision |
| W | Wide vessel and nerve mobilisation Sciatic nerve and femoral vessels must allow 180-degree rotation |
| I | Invert the limb 180 degrees Ankle joint becomes functional knee after rotation |
| S | Stabilise with osteosynthesis Tibiofemoral arthrodesis with plate, nail, or external fixation |
| T | Target heel 2-3cm above contralateral knee Allows for growth in skeletally immature patients |
| T | Tumour resection with clear margins Oncological principles take priority - wide or radical excision | S | Stabilise with osteosynthesis Tibiofemoral arthrodesis with plate, nail, or external fixation |
| W | Wide vessel and nerve mobilisation Sciatic nerve and femoral vessels must allow 180-degree rotation | T | Target heel 2-3cm above contralateral knee Allows for growth in skeletally immature patients |
| I | Invert the limb 180 degrees Ankle joint becomes functional knee after rotation |
Hook:TWIST the leg to create a new functional knee joint!
SKIPContraindications
| S | Sciatic nerve involvement Tumour encasing or invading sciatic nerve precludes procedure |
| K | Knowledge deficit in patient Poor understanding or unrealistic expectations about cosmesis |
| I | Inadequate vessel length Short femoral vessels cannot accommodate 180-degree rotation |
| P | Psychological unpreparedness Patient or family unable to accept altered body image |
| S | Sciatic nerve involvement Tumour encasing or invading sciatic nerve precludes procedure | I | Inadequate vessel length Short femoral vessels cannot accommodate 180-degree rotation |
| K | Knowledge deficit in patient Poor understanding or unrealistic expectations about cosmesis | P | Psychological unpreparedness Patient or family unable to accept altered body image |
Hook:SKIP rotationplasty if these contraindications exist!
Overview and Historical Context
Definition
Rotationplasty is a limb-salvage surgical technique that converts the ankle joint into a functional knee joint through 180-degree rotation of the distal limb segment following en bloc resection of bone tumours affecting the distal femur or proximal tibia. The procedure preserves the neurovascular structures to the distal limb, allowing active ankle motion (now functioning as knee flexion/extension) and proprioceptive feedback.
Historical Development
Evolution of Rotationplasty
German surgeon Kuno Borggreve first described rotationplasty for a patient with severe tuberculous arthritis of the knee, demonstrating that the rotated ankle could function as a knee joint.
Dutch orthopaedic surgeon C.P. Van Nes popularized the technique for congenital proximal femoral focal deficiency (PFFD), establishing classification system.
Austrian surgeons applied rotationplasty to malignant bone tumours, demonstrating oncological safety and functional benefits in children.
Winkelmann and others refined surgical technique, patient selection criteria, and rehabilitation protocols. Long-term outcome studies confirm excellent functional results and psychological adaptation.
Historical Context for Exams
In the viva, know that Borggreve first described rotationplasty in 1930, but Van Nes popularized it for congenital conditions (PFFD) in 1950 - hence the eponymous "Van Nes rotationplasty". Salzer applied it to oncology in 1981. This demonstrates the procedure evolved from non-oncological to oncological applications.
Epidemiology and Indications
Primary Indications:
- Osteosarcoma of distal femur or proximal tibia in skeletally immature patients
- Ewing sarcoma of distal femur or proximal tibia
- Aggressive benign tumours (GCT, ABC) with extensive bone destruction
Patient Demographics:
- Typical age: 6-14 years (skeletally immature)
- Peak incidence matches osteosarcoma demographics (10-20 years)
- No gender predilection for the procedure itself
Rotationplasty vs Above-Knee Amputation vs Endoprosthetic Replacement
| Feature | Rotationplasty | Above-Knee Amputation | Endoprosthetic Replacement |
|---|---|---|---|
| Functional outcome (MSTS) | ~60-85% (good-excellent) | 60-70% (moderate) | 70-80% (good) |
| Running and sports | Yes - active participation | Limited - high-activity prostheses | Limited - implant protection |
| Revision surgery | Rarely needed | Stump revision 15-20% | Multiple revisions required (growing child) |
| Infection risk | Low (no implant) | Low | 10-15% deep infection |
| Cosmetic appearance | Unusual - rotated foot visible | Limb absence | Near-normal appearance |
| Psychological adaptation | Excellent with proper counselling | Variable - phantom limb issues | Good |
| Long-term durability | Permanent biological solution | Stump issues common | Implant loosening 5-10 years |
| Growing child suitability | Ideal - accommodates growth | Acceptable | Problematic - multiple lengthenings |
Pathophysiology, Anatomy & Biomechanics
Key Anatomical Considerations
Sciatic Nerve
The sciatic nerve must be carefully preserved and mobilised to allow 180-degree rotation without tension. Minimum 15cm of nerve length is required. The nerve courses posteriorly, providing motor innervation to hamstrings and all leg/foot muscles below the knee.
Femoral Vessels
The femoral artery and vein transition to popliteal vessels behind the knee. These must be mobilised adequately to rotate without kinking or tension. Vessel length is critical - short vessels are a relative contraindication.
Ankle Joint
After rotation, the ankle becomes the functional knee joint. Plantarflexion produces knee extension, dorsiflexion produces knee flexion. The gastrocnemius-soleus complex becomes the "quadriceps equivalent".
Tibialis Anterior
The tibialis anterior muscle (dorsiflexor) becomes the "hamstring equivalent" after rotation, producing knee flexion. This preserves active motor control of the new joint.
Biomechanics of the Rotated Limb
After rotationplasty, the biomechanics of the lower limb are fundamentally altered:
Muscle Function Conversion:
- Gastrocnemius-soleus (ankle plantarflexors) become knee extensors
- Tibialis anterior (ankle dorsiflexor) becomes knee flexor
- Peroneal muscles contribute to knee flexion
- Triceps surae reflex becomes functionally equivalent to quadriceps reflex
Joint Mechanics:
- Ankle joint provides 20-45 degrees of "knee" flexion/extension
- Proprioceptive feedback maintained through intact sensory nerves
- The calcaneus becomes weight-bearing through the prosthetic socket
Biomechanics Viva Point
Key examiner question: "How does the patient extend the knee after rotationplasty?" Answer: "Plantarflexion of the ankle (gastrocnemius-soleus contraction) produces knee extension because the limb is rotated 180 degrees. The former ankle plantarflexors become the functional quadriceps equivalent."
Classification
Van Nes Classification System
The Van Nes classification categorizes rotationplasty procedures based on the location of tumour resection and the level of osteosynthesis:
Type A Rotationplasty (Van Nes Procedure)
Indication: Proximal tibia tumours
Technique:
- Resection of proximal tibia including tumour
- Distal tibial segment rotated 180 degrees
- Arthrodesis between femoral condyles and distal tibia
- Foot positioned to function as prosthetic knee joint
Osteosynthesis Level: Tibiofemoral fusion (distal tibia to distal femur)
Key Points:
- Preserves the knee joint capsule attachments to femur
- Fewer vascular challenges than Type B
- Less limb shortening compared to femoral resection
Van Nes Classification Summary
| Type | Tumour Location | Resection Level | Osteosynthesis | Common Tumour |
|---|---|---|---|---|
| Type A | Proximal tibia | Proximal tibia | Tibia to distal femur | Osteosarcoma, Ewing sarcoma |
| Type B1 | Distal femur | Distal femur | Tibia to proximal femur | Osteosarcoma (most common) |
| Type B2 | Femoral diaphysis | Extended femur | Tibia to trochanteric region | Diaphyseal tumours |
| Type C | Proximal femur/hip | Proximal femur | Tibia to pelvis | Rare for tumours |
Clinical Presentation, Patient Selection & Counselling
Ideal Patient Characteristics
Medical Criteria
- Age 6-14 years (skeletally immature)
- Tumour resectable with clear margins
- No metastatic disease (or controlled oligometastatic)
- Intact sciatic nerve (not encased by tumour)
- Adequate femoral vessel length for rotation
- No prior radiation to surgical field
Tumour Characteristics
- Distal femur or proximal tibia location
- Responsive to neoadjuvant chemotherapy (if indicated)
- No major vessel or nerve invasion
- Adequate soft tissue envelope preserved
- Sufficient residual limb length post-resection
Contraindications
Absolute Contraindications
Do not perform rotationplasty if:
- Sciatic nerve encasement or invasion by tumour
- Femoral artery or vein invasion requiring resection
- Inadequate vessel length for 180-degree rotation
- Active metastatic disease with poor prognosis
- Patient/family unable to accept cosmetic outcome after counselling
Relative Contraindications:
- Skeletal maturity (adolescents near skeletal maturity may prefer other options)
- Extensive soft tissue involvement requiring skin grafting
- Prior radiation compromising wound healing
- Ipsilateral foot or ankle pathology limiting function
- Severe psychological concerns despite counselling
Psychological Preparation
Counselling Process
Detailed explanation of all treatment options (rotationplasty, AKA, endoprosthesis). Show videos and photos of rotationplasty outcomes. Allow patient and family to meet previous rotationplasty patients.
Psychology assessment for patient and family. Evaluate coping mechanisms, support systems, and understanding of altered body image. Social work involvement for practical considerations.
Ensure understanding of: cosmetic appearance, functional expectations, prosthetic requirements, rehabilitation timeline, potential complications. Document shared decision-making.
Connect with age-appropriate previous rotationplasty patients. Observe prosthetic fitting and function. Address specific concerns about activities and social interactions.
Psychological Counselling
Examiner question: "How do you counsel a family considering rotationplasty?" Key points to mention: (1) Generally favourable function versus AKA (reported MSTS ~60-85%) while honestly acknowledging the wide range; (2) Unusual cosmetic appearance - show images and videos; (3) Meet previous patients; (4) Psychological assessment mandatory; (5) Long-term studies show psychosocial functioning approaching healthy peers, but body-image and intimacy concerns persist in a substantial minority; (6) Shared decision-making documented; (7) Option to decline and choose alternative.
Investigations & Preoperative Planning
Rotationplasty planning is built on the same staging workup as any primary bone sarcoma, with additional emphasis on the neurovascular anatomy that determines feasibility.
Local Staging (MRI)
Whole-bone MRI with contrast defines intramedullary and soft-tissue extent, skip lesions, and - critically - the relationship of tumour to the sciatic/tibial nerve. Nerve encasement is the key contraindication, so MRI directly drives the rotationplasty-versus-amputation decision.
Vascular Assessment
CT or MR angiography (or formal angiography) maps the femoral/popliteal vessels and any tumour involvement. Adequate vessel length and an uninvolved pedicle are prerequisites; encasement requiring resection generally precludes the procedure.
Systemic Staging
CT chest and whole-body imaging (bone scan or FDG-PET/CT) to exclude pulmonary and skeletal metastases. Active widespread metastatic disease with poor prognosis is a contraindication.
Biopsy & Response
Image-guided core biopsy through a tract planned for en bloc excision confirms histology. After neoadjuvant chemotherapy, percentage tumour necrosis informs prognosis and, per Sawamura, failure risk (poor response correlates with vascular failure).
Planning Pearl
The two investigations that make or break candidacy are MRI (sciatic nerve status) and angiography (vessel length and involvement). State these explicitly in the viva before discussing technique.
Management & Surgical Technique
Borggreve Rotationplasty (Type B - Distal Femur)
The most common rotationplasty for oncological indications.
Surgical Steps - Borggreve Rotationplasty
- Supine position on radiolucent table
- Entire limb draped free for manipulation
- Cell saver available for blood conservation
- Image intensifier positioned for intraoperative imaging
- Sterile tourniquet available but not routinely used
- Longitudinal incision from mid-thigh to mid-calf
- Plan incision to include biopsy tract for excision
- Develop flaps to expose femur and proximal tibia
- Identify and protect femoral vessels and sciatic nerve
- Identify femoral vessels at adductor hiatus
- Ligate profunda femoris if necessary for mobilisation
- Mobilise femoral artery and vein proximally
- Identify sciatic nerve in posterior thigh
- Mobilise nerve with at least 15cm length preserved
- Mark proximal femoral osteotomy level (above tumour margin)
- Mark distal tibial osteotomy level (below tumour margin)
- Perform en bloc resection maintaining wide oncological margins
- Send specimen for pathology - confirm margins frozen section
- Preserve femoral and tibial periosteum at osteotomy sites
- Externally rotate the distal limb segment 180 degrees
- Ensure vessels and nerve are not kinked or under tension
- Check vascular flow with Doppler after rotation
- The heel should now face anteriorly (toward surgeon)
- Toe points posteriorly
- Position the heel 2-3cm above the contralateral knee level
- This accounts for remaining growth in skeletally immature patients
- May need to shorten tibia to achieve correct positioning
- Confirm length clinically with comparison to opposite side
- Approximate proximal femur to proximal tibia
- Achieve stable fixation with:
- Intramedullary nail (preferred for stable fixation)
- Locking plate and screws
- External fixation (for contaminated cases or poor bone)
- Confirm alignment and rotation clinically
- Check radiographically with image intensifier
- Confirm vascular supply to rotated foot (Doppler, capillary refill)
- Layered closure of fascia and subcutaneous tissue
- Skin closure without tension - may need delayed closure or skin graft
- Splint in neutral ankle position (equivalent to knee extension)
- Well-padded dressing, avoid circumferential compression
Technical Pearls
- Preserve sciatic nerve carefully with meticulous dissection
- Ligate branches of profunda for vessel mobilisation
- Check vascular flow with Doppler BEFORE committing to rotation
- Verify limb length by comparison to contralateral side
- Position heel 2-3cm above contralateral knee for growth
Pitfalls to Avoid
- Vessel kinking after rotation (leads to ischemia)
- Sciatic nerve tension (causes paresis)
- Incorrect rotation angle (not full 180 degrees)
- Wrong leg length (too long or too short)
- Inadequate tumour margins (oncological failure)
Osteosynthesis Options
Fixation Methods for Rotationplasty
| Method | Advantages | Disadvantages | Best Indication |
|---|---|---|---|
| Intramedullary Nail | Excellent stability, early mobilisation | Requires adequate canal diameter | Standard choice for adolescents |
| Locking Plate | Preserves bone stock, versatile | Less stable than nail, soft tissue irritation | Small bone, young children |
| External Fixation | No implant in bone, allows adjustment | Pin site infection, patient inconvenience | Infected cases, staged procedures |
| Combination | Customised stability | More hardware | Complex cases, poor bone quality |
Intraoperative Vascular Assessment
Before completing rotation:
- Check femoral/popliteal pulse with Doppler
- Assess capillary refill in toes
- Confirm no vessel kinking or compression
- If any concern - de-rotate and reassess
Vascular compromise requires immediate intervention - liaise with vascular surgery if needed.
Complications
Early Postoperative Complications
| Complication | Incidence | Risk Factors | Management |
|---|---|---|---|
| Vascular compromise | 2-5% | Short vessels, excessive tension, vessel kinking | Immediate exploration, de-rotation, vascular repair |
| Nerve palsy (temporary) | 5-10% | Sciatic nerve stretch, inadequate mobilisation | Observation, physio - most recover within 6 months |
| Wound complications | 10-15% | Prior chemotherapy, tension, radiation | Dressings, VAC therapy, delayed closure, skin graft |
| Deep infection | 3-5% | Immunosuppression, wound breakdown | Debridement, antibiotics, may need hardware removal |
| Compartment syndrome | Less than 2% | Vascular compromise, tight dressings | Urgent fasciotomy |
Postoperative Management
Immediate Postoperative Care
Postoperative Protocol
- Neurovascular checks every 2 hours (critical)
- Pain management with multimodal analgesia
- Elevation of limb on pillows
- Ankle splint in neutral position (represents knee extension)
- DVT prophylaxis (mechanical and pharmacological)
- Monitor for compartment syndrome in calf muscles
- Continue neurovascular monitoring
- Wound checks and drain removal
- Begin gentle ankle range of motion exercises
- Non-weight bearing mobilisation with crutches/wheelchair
- Psychology and social work support initiated
- Progressive ankle ROM exercises
- Non-weight bearing continued until fusion signs
- Serial X-rays to assess union at fusion site
- Begin stump conditioning for prosthetic fitting
- Psychological support continued
- Confirm radiographic union (typically 8-12 weeks)
- Progress to protected weight bearing once united
- Prosthetic fitting and gait training initiated
- Continue ankle strengthening exercises
- Return to school planning
- Full weight bearing through prosthesis
- Progressive activity and sports participation
- Prosthetic adjustments as needed
- Long-term oncological surveillance commenced
Prosthetic Considerations
Prosthetic Design
- Below-knee (transtibial) type prosthesis fitted
- Socket encompasses the rotated foot
- Energy-storing prosthetic foot at distal end
- Prosthetic "knee" joint at ankle level
- Active ankle motion produces knee function in prosthesis
Gait Training
- Teach plantarflexion for knee extension (stance phase)
- Dorsiflexion initiates swing phase (knee flexion)
- Weight transfer through heel of rotated foot
- Running and sports achievable with practice
- Typically independent gait by 3-6 months
Outcomes and Prognosis
Functional Outcomes
MSTS Scores
- Rotationplasty: reported ~60-85% (long-term series report a wide range; Gradl 2015 found mean 64% at 14 years)
- Above-knee amputation: 60-70% (moderate)
- Endoprosthetic replacement: 70-80% (good)
Higher scores reflect better walking, running, and activity participation.
Activity Level
- Running: Achievable in most patients
- Jumping: Possible with training
- Swimming: Excellent - preferred activity
- Cycling: May require adapted equipment
- Team sports: Soccer, basketball participation reported
Psychological Outcomes
Long-term studies (mean 6-14 year follow-up) demonstrate:
- Psychosocial functioning and general quality of life approaching those of healthy peers in appropriately selected patients (Veenstra 2000; Gradl 2015)
- Two-thirds of patients remain actively engaged in sport and wear the prosthesis continuously
- Persisting body-image and intimacy concerns in a substantial minority (one-third to one-half in Veenstra 2000) - not trivial
- Children generally adapt more readily than adolescents
Outcome Data for Exams
Know these numbers:
- MSTS functional score: reported ~60-85% (Gradl 2015: mean 64% at 14 years; older series higher)
- Quality of life: psychosocial domains comparable to healthy peers, but body-image concerns persist in up to half
- Major complication rate: 5-15%; secondary amputation for vascular failure ~10% (Sawamura 2008)
- Nonunion rate: 5-10%
- Local recurrence: depends on tumour factors and margins, not the reconstruction itself
Evidence Base
Landmark: Rotationplasty for Childhood Distal Femoral Osteosarcoma
- Four children with distal femoral osteosarcoma treated by rotationplasty with en bloc wide excision of distal femur, knee and proximal tibia
- No clinical or radiographic local recurrence over follow-up of 27 to 58 months
- One patient died of widespread metastatic disease
- No wound-healing problems despite high-dose methotrexate adjuvant chemotherapy, allowing early prosthetic fitting
- Established rotationplasty as the authors' standard surgical option for this indication
Quality of Life After Van Nes-Borggreve Rotationplasty
- 34 patients surveyed (96% response), all over 16 years old and at least 1 year (mean 6.3 years) after rotationplasty
- Physical functioning poorer than healthy peers but better than chronically ill controls
- Psychosocial functioning, general quality of life and social support comparable to healthy peers
- One-third to one-half reported negative effects on body image, initiating social or intimate contact, and sexuality
- Two-thirds engaged actively in sport and wore the prosthesis continuously with good satisfaction
Long-term Functional Outcome and Quality of Life
- 12 patients operated 1991-2001, mean follow-up 14 years (mean age 19 at surgery, 32 at review)
- Mean MSTS score 64% and mean Tegner activity level 4.1, consistent with recreational sport
- SF-36 physical functioning 80, with significantly higher vitality, social functioning and mental health than a representative German cohort
- Patients satisfied with function for activities of daily living and sport at long-term follow-up
Exam Viva Scenarios
Use these scenarios to practise clinical reasoning and management decisions
Scenario 1: Initial Presentation and Treatment Options
"A 10-year-old boy presents with a 6-week history of right distal femur pain. Imaging reveals a destructive lesion consistent with osteosarcoma. Staging shows no metastatic disease. The tumour involves the distal 15cm of femur but spares the neurovascular structures. What are the reconstructive options and which would you recommend?"
Scenario 2: Surgical Technique Discussion
"You are performing a Borggreve rotationplasty for distal femur osteosarcoma in a 12-year-old girl. Describe the critical steps of the procedure and the key technical considerations."
Scenario 3: Complications and Outcomes
"A 14-year-old girl is now 2 years post-rotationplasty for proximal tibial osteosarcoma. She is struggling with body image issues and asking whether she made the right choice. Her parents are concerned. How do you approach this situation?"
Guidelines, Registries & Global Practice
Global Epidemiology
Osteosarcoma and Ewing sarcoma are the dominant indications. Osteosarcoma has a bimodal age distribution with the larger peak in the second decade and an incidence of roughly 3-4 cases per million per year in children and adolescents; the distal femur and proximal tibia (the classic rotationplasty sites) together account for the majority of lower-limb cases. Ewing sarcoma is somewhat rarer (~1-3 per million) and shows a male predominance. Because rotationplasty is reserved for selected skeletally immature patients in whom the sciatic nerve is spared, it represents a small fraction of all sarcoma reconstructions worldwide and is concentrated in specialist paediatric sarcoma centres.
Guidelines, Side by Side
No society publishes a procedure-specific rotationplasty guideline; recommendations sit within broader bone-sarcoma pathways. The common thread is management within a specialist sarcoma multidisciplinary team (MDT) with limb-salvage decision-making individualised to tumour stage, skeletal maturity and patient preference.
Where Rotationplasty Sits in Major Sarcoma Frameworks
| Body / Region | Position on rotationplasty | Practical emphasis |
|---|---|---|
| NICE / BSG & BOA (UK) | Recognised limb-salvage alternative to amputation in young children; decisions in a designated bone-sarcoma MDT | Centralisation to a small number of supraregional sarcoma centres |
| NCCN / MSTS (US) | Listed reconstructive option for skeletally immature distal-femur tumours; choice individualised against endoprosthesis and amputation | Function (MSTS), durability and revision burden weighed in shared decision-making |
| ESMO / EURAMOS (Europe) | Surgery integrated with neoadjuvant chemotherapy; reconstruction chosen by the sarcoma MDT after response assessment | Chemotherapy response and clear margins prioritised over reconstruction type |
| Resource-limited settings | Often a pragmatic, durable, implant-free option avoiding lifelong endoprosthesis maintenance | Lower long-term cost and no implant supply chain, balanced against prosthetic and rehabilitation access |
Registries and Practice Variation
There is no dedicated rotationplasty registry; outcome data come from single-centre and pooled sarcoma-unit series. Practice varies markedly with resources and culture: in high-income settings the main competitor is the (expandable) endoprosthesis, and rotationplasty uptake is partly limited by cosmetic acceptability and the availability of revision arthroplasty. In limited-resource settings, rotationplasty's implant-free durability and avoidance of repeated lengthening procedures can make it relatively more attractive, provided skilled microvascular/oncological surgery and quality prosthetic services exist. Cultural attitudes to the visibly rotated foot strongly influence acceptance and must be explored individually rather than assumed.
Controversies and Areas of Uncertainty
Is function truly superior?
Older case series reported high MSTS scores, but Gradl (2015) found a mean of only 64% at 14 years, and Floccari (2021, JBJS) found no gait, energy or patient-reported advantage for rotationplasty over Syme amputation or an equinus prosthesis in PFFD. Oncological and congenital indications must not be conflated.
Cosmesis versus function trade-off
The visibly rotated, backward-facing foot remains the dominant barrier to acceptance despite good function. Body-image and intimacy concerns persist in a substantial minority long-term, so the trade-off is genuinely values-dependent.
Vascular failure risk
Secondary amputation from vascular compromise occurred in ~12% of one series (Sawamura 2008), particularly with vascular anastomosis, poor chemotherapy response, or preoperative pathological fracture - a real, under-discussed failure mode.
Rotationplasty versus modern endoprosthesis
As growing/expandable endoprostheses and 3D-printed implants improve, the relative role of rotationplasty in high-income practice is contested; there are no randomised data, and selection bias clouds all comparative series.
Rotationplasty - Exam Summary
Clinical summary
Definition and Indication
- •180-degree rotation of distal limb converting ankle to functional knee
- •Primary indication: distal femur or proximal tibia tumours in children
- •Ideal age: 6-14 years (skeletally immature)
- •Van Nes classification: Type A (proximal tibia), Type B (distal femur), Type C (proximal femur)
Key Surgical Points
- •Sciatic nerve needs minimum 15cm length preserved
- •Check vascular flow with Doppler BEFORE rotation
- •Rotate EXACTLY 180 degrees (heel anterior)
- •Position heel 2-3cm above contralateral knee for growth
- •Osteosynthesis: IM nail, plate, or external fixation
Functional Outcomes
- •MSTS score: reported ~60-85% (generally favourable versus AKA 60-70%; Gradl 2015 mean 64%)
- •Plantarflexion produces knee extension (gastrocnemius = quadriceps)
- •Running, jumping, sports participation achievable
- •Proprioception preserved through intact nerves
- •Below-knee prosthesis fitted to rotated foot
Complications
- •Vascular compromise: 2-5% (requires immediate de-rotation)
- •Nerve palsy (temporary): 5-10%
- •Wound complications: 10-15%
- •Nonunion: 5-10%
- •Psychological distress: variable (counselling essential)
Patient Selection
- •Psychological assessment mandatory
- •Family to meet previous patients
- •Shared decision-making documented
- •Contraindication: sciatic nerve involvement, short vessels, unable to accept cosmesis
- •Long-term psychosocial functioning approaches that of healthy peers (Veenstra 2000; Gradl 2015)
Comparison with Alternatives
- •vs AKA: generally better function (MSTS ~60-85% vs 60-70%), can run/jump
- •vs Endoprosthesis: avoids multiple revisions, no infection risk
- •Cosmesis: unusual appearance (rotated foot) vs prosthetic limb vs near-normal
- •Durability: permanent biological solution vs stump issues vs implant loosening
References
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Borggreve J. Kniegelenkersatz durch das in der Beinlangsachse um 180 Grad gedrehte Fussgelenk. Arch Orthop Trauma Surg. 1930;28:175-178.
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Van Nes CP. Rotation-plasty for congenital defects of the femur. J Bone Joint Surg Br. 1950;32-B(1):12-16.
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Salzer M, Knahr K, Kotz R, Zielinski C. Treatment of osteosarcomata of the distal femur by rotation-plasty. Arch Orthop Trauma Surg. 1981;99(2):131-136.
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Winkelmann WW. Rotationplasty. Orthop Clin North Am. 1996;27(3):503-523.
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Hillmann A, Gosheger G, Hoffmann C, Ozaki T, Winkelmann W. Rotationplasty - surgical treatment modality after failed limb salvage procedure. Arch Orthop Trauma Surg. 2000;120(10):555-558.
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Veenstra KM, Sprangers MA, van der Eyken JW, Taminiau AH. Quality of life in survivors with a Van Nes-Borggreve rotationplasty after bone tumour resection. J Surg Oncol. 2000;73(4):192-197.
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Gradl G, Postl LK, Lenze U, et al. Long-term functional outcome and quality of life following rotationplasty for treatment of malignant tumors. BMC Musculoskelet Disord. 2015;16:262.
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Krajbich JI. Rotation-plasty in the management of proximal femoral focal deficiency. Prosthet Orthot Int. 1991;15(2):100-107.
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Sawamura C, Hornicek FJ, Gebhardt MC. Complications and risk factors for failure of rotationplasty: review of 25 patients. Clin Orthop Relat Res. 2008;466(6):1302-1308.
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Kotz R, Salzer M. Rotation-plasty for childhood osteosarcoma of the distal part of the femur. J Bone Joint Surg Am. 1982;64(7):959-969.
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Merkel KD, Gebhardt MC, Springfield DS. Rotationplasty as a reconstructive operation after tumor resection. Clin Orthop Relat Res. 1991;(270):231-236.
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Hillmann A, Rosenbaum D, Gosheger G, et al. Rotationplasty type B1 versus type BIIIa. Gait Posture. 2001;14(1):51-59.
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Floccari LV, Jeans KA, Herring JA, Johnston CE, Karol LA. Comparison of outcomes by reconstructive strategy in patients with prostheses for proximal femoral focal deficiency. J Bone Joint Surg Am. 2021;103(19):1817-1825.