The influence of age, sex, and initial fit on bony ingrowth stabilization with the AML femoral component in primary THA.
A radiographic review of 178 consecutive primary total hip arthroplasties using the AML femoral component with a mean follow up of 40.1 months identified 92.3% to be stabilized by bony ingrowth and 7.7% by fibrous tissue. None were classified as loose. The quality of fit in the isthmus and calcar regions was identified as an important factor in achieving bony ingrowth stabilization. Bony ingrowth was achieved in all age groups with equal frequency. No relationship between sex and the type of stabilization was identified. A clinical correlation utilizing a subset of patients with identical prosthetic components identified equivalent clinical results across all age groups. Thirty-four percent of patients experienced some residual thigh pain. No statistically significant relationship between the presence of thigh pain and the type of femoral component stabilization (bony vs fibrous) could be identified. Ninety-eight percent of patients expressed unconditional satisfaction with their hip replacements.
Shaw
J A
JA
Division of Orthopedic Surgery, Milton S. Hershey Medical Center, Pennsylvania State University College of Medicine, Hershey 17033.
Bruno
A
A
Paul
E M
EM
D000328:Adult; D000367:Age Factors; D000368:Aged; D005260:Female; D005271:Femur Head Necrosis / Q000601:surgery; D005500:Follow-Up Studies; D006621:Hip Joint / Q000000981:diagnostic imaging; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D016348:Osseointegration; D015207:Osteoarthritis, Hip / Q000601:surgery; D011474:Prosthesis Design; D011859:Radiography; D012737:Sex Factors