Acetabular revision in total hip replacement with a press-fit cup.
The need for supplementary screw fixation in acetabular revisions is still widely debated. We carried out 439 acetabular revisions over an eight-year period. In 171 hips with contained or small segmental defects, the Morscher press-fit cup was used. These revisions were followed prospectively. No screws were used for additional fixation. A total of 123 hips with a mean follow-up of 7.4 years (5 to 10.5) were available for clinical and radiological review. There was no further revision of a press-fit cup for aseptic loosening. Radiological assessment revealed osteolysis in three hips. Of the original 171 hips there was cranial and medial migration of up to 6 mm at two years in 44 (26%). No further migration was seen after the second post-operative year. Acetabular revision without screws is possible with excellent medium-term results in well selected patients.
Elke
R
R
Orthopaedic Department, University of Basel, Switzerland.
Berli
B
B
Wagner
A
A
Morscher
E W
EW
D000077:Acetabulum / Q000000981:diagnostic imaging / Q000601:surgery*; D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D001863:Bone Screws; D004867:Equipment Design; D005500:Follow-Up Studies; D006622:Hip Prosthesis; D006801:Humans; D011183:Postoperative Complications; D011446:Prospective Studies; D011475:Prosthesis Failure; D011859:Radiography; D012086:Reoperation / Q000295:instrumentation / Q000379:methods; D016896:Treatment Outcome