title: Long-term clinical results and radiographic changes in the nonresurfaced patella after total knee arthroplasty: 78 knees followed for mean 12 years.
abstract: We evaluated total knee arthroplasty without patellar resurfacing retrospectively in 50 patients (78 knees; 4 men (7 knees) and 46 women (71 knees) having a mean age of 63 (34-78) years and mean weight of 52 (32-72) kg). The preoperative diagnosis was osteoarthrosis in 26 patients (43 knees) and rheumatoid arthritis in 24 (35 knees). The mean follow-up was 12 (9-14) years. Only 3 patients (4 knees) had patellar pain and they all showed patellar subluxation. The latter was found in 13 other knees, all pain-free. We detected no differences between the knees with osteoarthrosis and rheumatoid arthritis concerning the incidence of patellar pain and patellar subluxation. No patient needed revision surgery for patellar problems. We question the need to resurface the patella routinely in total knee arthroplasty if it is congruous and well-aligned.
authors.affiliation: Department of Orthopaedic Surgery, Mie University, Faculty of Medicine, Tsu City, Japan. masahase@clin.medic.mie-u.ac.jp
authors.forename: Masahiro
authors.initials: M
authors.lastname: Hasegawa
authors.forename: Toshiro
authors.initials: T
authors.lastname: Ohashi
mesh_terms: D000328:Adult; D000368:Aged; D001172:Arthritis, Rheumatoid / Q000601:surgery*; D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000601:surgery*; D017063:Outcome Assessment, Health Care; D010146:Pain / Q000000981:diagnostic imaging* / Q000209:etiology*; D010329:Patella / Q000000981:diagnostic imaging* / Q000601:surgery*; D031222:Patellar Dislocation / Q000000981:diagnostic imaging* / Q000209:etiology*; D011859:Radiography; D012189:Retrospective Studies; D013499:Surface Properties; D013997:Time Factors