Hip replacement dislocation is a feared complication that often recurs, driven by impingement and limited jump distance. Understanding the stability ladder helps surgeons and trainees restore stability after a dislocation event. This video breaks down the mechanics, risk factors, and management strategies. ⏱ Chapters 0:00 Intro 0:26 Why Hips Dislocate 1:26 The Dislocated THA — Read It Before You Pull 2:44 The First Dislocation 3:46 The Posterior Repair — Rotators Back To Bone 4:51 The Recurrent Dislocator 5:38 The Functional Zone — Standing And Sitting… 6:54 Buying Stability Back 7:56 Dual Mobility — Read Its Films Differently 8:36 The Precaution Clock 9:57 Recap & sources The video explains why hips dislocate after arthroplasty, detailing the roles of prosthetic impingement, jump distance, and component positioning. It covers posterior dislocation mechanics, clinical presentation, reduction technique, neurovascular assessment, and prevention strategies including head size, dual mobility, and soft‑tissue repair. Recognising these factors is essential to reduce recurrence and improve patient outcomes. 🦴 IN THIS VIDEO YOU'LL LEARN • How prosthetic neck‑on‑cup impingement creates a fulcrum that leads to dislocation • The concept of jump distance and how head size, liner coverage and dual mobility increase stability • Why posterior dislocation accounts for 75‑80% of cases and its typical limb position • Key steps in safe closed reduction, including neurovascular examination before and after • How to interpret AP pelvis radiographs to assess cup inclination, version and impingement • The influence of the Lewinnek safe zones and combined anteversion on stability • Prevention strategies: restoring offset, using 36 mm or larger heads, and dual mobility in high‑risk patients • Recognising when recurrent dislocation warrants revision surgery and which constructs improve stability 📌 KEY TAKEAWAYS ✔️ Impingement is the trigger; jump distance is the stability reserve that prevents escape ✔️ Posterior dislocation presents with flexion, adduction, internal rotation and a shortened limb ✔️ A head size of 36 mm or larger significantly lowers dislocation risk ✔️ Meticulous posterior soft‑tissue repair and offset restoration are critical for stability ✔️ Dual mobility constructs provide a large effective head and high jump distance for high‑risk patients ✔️ Recurrent dislocation after the first event often requires revision to restore stability 👩⚕️ WHO THIS IS FOR This video is useful for orthopaedic trainees, medical students, practising clinicians and interested patients who want to understand hip replacement dislocation, its causes and how to prevent recurrence. 📚 RELATED TOPICS: Component version analysis · Dual mobility arthroplasty · Lewinnek safe zones · Jump distance and head size · Posterior soft‑tissue repair · Revision strategies for recurrent instability 🔗 More free orthopaedic teaching at Orthovellum.com — subscribe for weekly videos. 🎨 CREDITS • Original Orthovellum production. ⚠️ DISCLAIMER: Educational only — not individual medical advice. Always consult a qualified clinician for diagnosis and treatment. #hipreplacement #dislocation #impingement #jumpdistance #stabilityladder #arthroplasty #orthopaedics #jointreplacement #posteriordislocation #dualmobility #headsize #softtissue #reduction #neurovascular #revision