Long-term clinical and radiological results of the Lord total hip prosthesis. A prospective study.
We enrolled 98 patients (107 hips) with a mean age of 47 years (SD 8.6) into a prospective study of the Madreporic Lord THR; 34 hips had primary and 73 secondary osteoarthritis. After ten years, the survival rate using revision as the endpoint for failure was 70% (+/-9) for the cup and 98% (+/-0.3) for the stem. The combined clinical and radiological survival rates were 46% (+/-11) and 81% (+/-10), respectively. Osteoporosis due to stress-shielding was observed in the proximal femur. Hips with radiologically dense bone postoperatively showed the most pronounced bone loss. We recommend continued radiological follow-up of patients with this type of implant to allow revision to be performed before there is severe bony destruction of the pelvis.
Malchau
H
H
Department of Orthopaedics, Sahlgrenska University Hospital, Gothenburg, Sweden.
Herberts
P
P
Wang
Y X
YX
Kärrholm
J
J
Romanus
B
B
D000077:Acetabulum / Q000293:injuries; D005260:Female; D005265:Femoral Neck Fractures / Q000601:surgery; D005271:Femur Head Necrosis / Q000601:surgery; D050723:Fractures, Bone / Q000601:surgery; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000601:surgery; D011446:Prospective Studies; D011475:Prosthesis Failure; D012086:Reoperation; D016896:Treatment Outcome