Cementless cup supporter for protrusio acetabuli in patients with rheumatoid arthritis

Abstract

The MC cup supporter is an acetabular reinforcement ring for the Harris-Galante (HG) cementless porous-coated socket. This supporting ring has been used with autogenous bone graft since 1991 in the management of protrusio acetabuli in patients with rheumatoid arthritis (RA). We have reviewed 15 hips in 13 patients at an average of 53.6 months (range 24-84 months) after operation. The clinical results of total hip arthroplasty (THA) in protrusio acetabuli using this ring were satisfactory. All grafts appeared to have united radiologically with no radiolucent lines between graft and acetabulum.

Restoration of the Hip Center During THA Performed for Protrusio Acetabuli Is Associated With Better Implant Survival

“…None had failed at a mean followup of 4.2 years (range, 2-10 years). Matsuno et al [10] reported on 15 hips with rheumatoid arthritis which were treated with HG cementless porous-coated cups and supported by an acetabular rim ring and bone grafting. None had failed at a mean followup of 4.5 years (range, 2-7 years).…”

“…Mullaji and Marawar [12] reported a mean Harris hip score of 85 with 90% excellent or good results. Matsuno et al [10] reported satisfactory clinical results using the Japanese Orthopaedic Association (JOA) hip score. In our series, the clinical and functional results were excellent for uncemented cups, but the results were not as good as those seen with cemented cups alone without bone graft.…”

Results of revision total hip arthroplasty with Anatomic BR stem: 10-year minimum follow-up

“…In 12 [9] were applied to six of these 12 hips, and two Trilogy acetabular components (Zimmer Co.) were used in two hips; the acetabular component in the remaining hip was secure and thus not revised. The patients were mobilized with crutches postoperatively without weight bearing during the first 4 weeks post-surgery, followed by partial weight bearing for the next 3 months.…”

hip replacemenT using a muller aceT abular reinforcemenT ring

“…Наиболее известно укрепляющее опорное кольцо, которое было разработано М. Мюллером в 1977 г., а пик его клинического применения в Европе начался после 1980 г. [1,15,20,21].…”