Effects of perioperative factors and hip geometry on hip abductor muscle strength during the first 6 months after anterolateral total hip arthroplasty.
Takashi Ikeda, Tetsuya Jinno, Junya Aizawa and 5 others
PMID 28265161WHAT IT FOUND
After anterolateral total hip arthroplasty, hip abductor strength at 2 and 6 months was related to preoperative strength, body mass index, and mental health score, not femoral offset.
Key findings
01At 2 months after surgery, preoperative hip abductor strength, body mass index, and JHEQ mental score were significant factors related to hip abductor strength.
02At 6 months after surgery, the same three factors remained significant factors related to hip abductor strength.
03Femoral offset was not listed among the significant factors included in the regression model.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
Only women with osteoarthritis were included, so results may not apply to men or other hip diagnoses. Six of 103 eligible participants did not complete the study, leaving 97 analyzed. The study did not compare groups or test an intervention, so it cannot show that any factor caused strength changes. Home exercise compliance was self-reported and not supervised by a physical therapist after discharge. Hip center height was not examined because no patient had a high hip center. Preoperative femoral neck anteversion was not measured.
Declared interests
The authors declared no financial or personal relationships that could inappropriately influence or bias the work.
The easy way to misread this
Do not conclude that femoral offset placement determines hip abductor strength after total hip arthroplasty. In this study, femoral offset was not extracted as a significant factor related to postoperative isometric hip abductor strength.