The results of 103 total hip arthroplasties performed with insertion of a ceramic femoral heat and acetabular component in ninety-six patients were reviewed to determine the radiographic prevalence of osteolysis.
After a mean duration of follow-up of ninety-two months (range, sixty to 125 months), femoral osteolysis was observed in twenty-three hips (22 per cent), in one of two distinct patterns : linear osteolysis (twelve hips) or scalloping expansile-type osteolysis (eleven hips).
The most common locations of osteolysis in the femur were in zones I and VII as described by Gruen et al.
Serial radiographs demonstrated that the extent of the osteolysis progressed over time.
Osteolysis of the pelvis, noted in forty-nine hips, was always associated with migration of the acetabular socket.
No focal osteolysis was observed in association with the stable sockets.
Ten patients (ten hips) had a revision because of loosening and migration of the acetabular component.
In three of these patients, the femoral stem also was revised.
Gross examination revealed evidence of wear of the ceramic bearing surface in all ten patients.
Scanning electron microscopy showed cracking and wear marks on the weight-bearing surface.
Histological evaluation of the tissue in the periprosthetic membrane demonstrated abundant ceramic wear particles.
The interface membrane was composed of a vascularized fibrous connective tissue with macrophages. (...)
Mots-clés Pascal : Prothèse non cimentée, Total, Hanche, Biomatériau, Matériau revêtement, Céramique, Ostéolyse, Complication, Postopératoire, Particule usure, Histopathologie, Prévalence, Epidémiologie, Homme, Chirurgie orthopédique, Système ostéoarticulaire pathologie, Ostéopathie
Mots-clés Pascal anglais : Non cemented prosthesis, Total, Hip, Biomaterial, Coating material, Ceramic materials, Osteolysis, Complication, Postoperative, Wear particle, Histopathology, Prevalence, Epidemiology, Human, Orthopedic surgery, Diseases of the osteoarticular system, Bone disease
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 99-0007032
Code Inist : 002B25I. Création : 31/05/1999.