The Long Oblique Revision component in revision arthroplasty of the hip.
Migration of the acetabular component may give rise to oval-shaped bone defects in the acetabulum. The oblong implant is designed to fill these defects and achieve a stable cementless anchorage with no significant bone loss. We prospectively reviewed 133 oblong long oblique revision components at a mean follow-up of 9.74 years (0.6 to 14). All had been used in revisions for defects of type IIB to IIIB according to Paprosky. Aseptic loosening was the reason for revision in 11 cases (8.3%) and deep infection in seven (5.3%). The probability of implant survival over a 12-year follow-up estimated by the Kaplan-Meier method gave a survival rate of 0.85% respectively 0.90% when deep infection was excluded as the endpoint. Our study supports the use of these components in defects from IIB to IIIA. The main precondition for success is direct contact of more than half of the surface of the implant with the host acetabular bone.
Landor
I
I
Medical Faculty Charles, University, Prague 5, Czech Republic. landor@atlas.cz
Vavrik
P
P
Jahoda
D
D
Pokorny
D
D
Tawa
A
A
Sosna
A
A
D000077:Acetabulum / Q000000981:diagnostic imaging / Q000601:surgery*; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects*; D005260:Female; D006622:Hip Prosthesis / Q000009:adverse effects*; D006801:Humans; D007593:Joint Instability / Q000000981:diagnostic imaging / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D011474:Prosthesis Design; D011475:Prosthesis Failure; D016459:Prosthesis-Related Infections / Q000188:drug therapy; D011859:Radiography; D012086:Reoperation; D012293:Rifampin / Q000627:therapeutic use; D016896:Treatment Outcome
D000900:Anti-Bacterial Agents; D012293:Rifampin