Is diaphyseal stem fixation necessary for primary total hip arthroplasty in patients with osteoporotic bone (Class C bone)?
The purpose of this study was to determine the survivorship of the short, metaphyseal-fitting cementless anatomic stem, hip function, thigh pain, and the stress shielding after total hip arthroplasty in 72 patients (81 hips) with Class A bone, 73 patients (83 hips) with Class B bone, and 85 patients (92 hips) with Class C bone. Survival of the femoral stem at 7 years was similar for all 3 classes of bones (100%, 100%, and 98.2%, respectively). At 7 years after the operation, the mean Harris hip scores (95, 93, and 91 points, respectively), WOMAC scores (11, 12, and 15 points, respectively), incidence of thigh pain (none in all 3 groups), radiographic findings and bone mineral density were not significantly different among the 3 groups.
Joint Replacement Center, Ewha Womans University School of Medicine, Seoul, Korea.
Young-Hoo
YH
Kim
Jang-Won
JW
Park
Jun-Shik
JS
Kim
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip; D005260:Female; D006621:Hip Joint; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000601:surgery; D010020:Osteonecrosis / Q000601:surgery; D010024:Osteoporosis / Q000601:surgery*; D011474:Prosthesis Design; D011475:Prosthesis Failure