title: Results at 11.5 years of a series of 376 posterior stabilized HLS1 total knee replacements. Survivorship analysis, and risk factors for failure.
abstract: Of 376 cemented posterior stabilized HLS1 TKRs inserted in 329 patients (mean age 70) between 1984 and 1988, information was available on 306 (81.4%) at the third follow-up in 1998: 118 patients deceased; 163 followed up clinically (Knee Society score) and radiographically; 25 revised (15 infections; 10 mechanical failures). At a mean follow-up of 11.5 years, the mean pain score was 43/50, and the mean ROM score 21/25 (both unchanged since 1989). The function score had declined linearly, from 70/100 in 1989 to 60/100 in 1998. Forty percent had tibial radiolucencies correlating with the extent of preoperative bone wear. Polyethylene wear (seen in 35% of knees) was always < 3 mm. The implant survival rate (infections included) was 93.7% (+/- 1.4%) after 10 years. All the mechanical failures were in advanced-OA patients with ACL-deficient knees and major bony deficiencies.
authors.affiliation: Centre Livet, 8, rue de Margnolles, F-69300 Lyon-Caluire, France.
authors.forename: O
authors.initials: O
authors.lastname: Tayot
authors.forename: T
authors.initials: T
authors.lastname: Aït Si Selmi
authors.forename: P
authors.initials: P
authors.lastname: Neyret
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D018771:Arthralgia / Q000453:epidemiology; D019645:Arthroplasty, Replacement, Knee; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging / Q000503:physiopathology; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design; D011475:Prosthesis Failure; D011859:Radiography; D016059:Range of Motion, Articular; D012189:Retrospective Studies; D012307:Risk Factors; D013997:Time Factors; D016896:Treatment Outcome