Hip Biomechanics
A 68-year-old woman with hip osteoarthritis and prior L4-S1 fusion presents for total hip arthroplasty. She walks with marked forward trunk lean. Standing lateral radiographs show 25 degrees pelvic tilt and minimal change between sitting and standing. Her spine is rigid with loss of normal lumbar lordosis. Regarding spinopelvic parameters and THA:
Mark each as TRUE or FALSE
Spinopelvic mobility describes how pelvic tilt changes between sitting and standing; normal spine re...
Key measurements include pelvic incidence (PI, fixed anatomic parameter), pelvic tilt (PT, dynamic),...
Spinal fusion does not affect THA outcomes; pelvic tilt is fixed and never changes; the Lewinnek saf...
Patients with spinal fusion (especially long fusions including the sacrum) have 2-3x higher dislocat...
Management strategies include: preoperative sitting and standing lateral radiographs to assess spino...
Answer the questions to see explanations
Click T (True) or F (False) for each option