Outcome of hybrid stem fixation in osteoporotic female patients. A minimum five-year follow-up study.
In osteoporotic patients cemented stems are usually used to achieve a good primary stability. However, when patients are obese or active the long-term survival of cemented prostheses is questioned. In these patients, a partially-cemented stem with a hybrid fixation could be advantageous. A hybrid stem was retrospectively evaluated at a minimum follow-up of 60 months (mean, 75 months) in 58 osteoporotic women: seventeen with a body mass index (BMI) >30 (obese), 41 with a BMI between 25 and 29.9 (overweight), and an UCLA score for activity level >6. At the latest follow up, the Harris hip score improved from 33.5 points preoperatively to 81.6 points, and the WOMAC score improved significantly. Three stems (4.9%) had an asymptomatic subsidence of less than 2.5 mm; no stem was revised. These results support the use of partially-cemented stems in heavy or active osteoporotic women.
Traina
Francesco
F
1st Department of Orthopaedic Surgery, Laboratory of Medical Technology (LTM), Istituti Ortopedici Rizzoli, Via G. Pupilli 1, 40136, Bologna, Italy. traina@tecno.ior.it
Tassinari
Enrico
E
Pilla
Federico
F
De Fine
Marcello
M
Biondi
Federico
F
Cristofolini
Luca
L
Toni
Aldo
A
D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation / Q000379:methods*; D015992:Body Mass Index; D001843:Bone Cements; D005260:Female; D005500:Follow-Up Studies; D006621:Hip Joint / Q000000981:diagnostic imaging / Q000601:surgery; D006622:Hip Prosthesis; D006801:Humans; D007592:Joint Diseases / Q000601:surgery*; D008137:Longitudinal Studies; D008875:Middle Aged; D009043:Motor Activity; D009765:Obesity / Q000150:complications; D015663:Osteoporosis, Postmenopausal / Q000150:complications / Q000601:surgery*; D011474:Prosthesis Design; D011859:Radiography; D012189:Retrospective Studies; D016896:Treatment Outcome
D001843:Bone Cements