Chiari pelvic osteotomy
Pronunciation: kee-AH-ree
A salvage hip procedure that improves acetabular coverage by creating a shelf of bone over the femoral head through iliac osteotomy.
Full Definition
The Chiari pelvic osteotomy is a salvage procedure for hip dysplasia, particularly in cases where primary acetabular reconstruction is not feasible due to severe dysplasia or failed previous surgery. Named after Dr. Karl Chiari, the procedure involves performing a curved osteotomy through the ilium above the acetabulum and displacing the distal fragment medially and downward. This creates a 'shelf' of bone that provides improved coverage for the femoral head, though the articulation occurs partly between the femoral head and the joint capsule rather than articular cartilage. While not providing a normal hip joint, it can improve pain and function in carefully selected cases.
Usage
Usage note: Named after Karl Chiari; should be capitalized.
In Context
- "Given the severe acetabular dysplasia, the team opted for a Chiari pelvic osteotomy rather than total hip replacement." — Surgical planning conference
- "The Chiari pelvic osteotomy provided adequate pain relief despite the non-anatomic hip reconstruction." — Long-term follow-up report