Factors affecting bony impingement in hip arthroplasty.
biomechanical · Level V
Where this comes from
- Record sourced from PubMed, PMID 19559561.
- Also identified by DOI 10.1016/j.arth.2009.03.024.
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Abstract
Computer modeling of 10 patients' computed tomographic scans was used to study the variables affecting hip arthroplasty range of motion before bony impingement (ROMBI) including acetabular offset and height, femoral offset, height and anteversion, and osteophyte removal. The ROMBI was compared with the ROM before component impingement and the native hip ROM. The ROMBI decreased with decreased total offset and limb shortening. Acetabular offset and height had a greater effect on ROMBI than femoral offset and height. The ROMBI lost with decreased acetabular offset was not fully recoverable with an increase in femoral offset or osteophyte removal. Bony impingement increased and component impingement decreased with decreased acetabular offset and increased head diameter.
Medical subject headings
- Arthroplasty, Replacement, Hip
- Hip Prosthesis
- Osteoarthritis, Hip
- Osteophyte
Anatomy
- hip
- femur