title: Patellar clunk syndrome in a current high flexion total knee design.
abstract: This retrospective study of 208 (204 patients) total knee arthroplasties evaluated the incidence of patellar clunk syndrome for two high-flex posterior stabilized knee prostheses; a high-flex fixed bearing prosthesis and a high-flex mobile bearing prosthesis. Patients were followed for up to two years and were evaluated for patellar clunk and component position. Knees receiving the mobile bearing had a significantly higher (p < 0.001) incidence of patellar clunk (15%) than knees receiving the fixed bearing (0%). There was a significantly higher incidence of patellar clunk in males (34.1%; p < 0.01) compared to females (8.6%). Fibrous nodules were treated surgically in 11 of the knees with patellar clunk. The design of this particular mobile bearing knee seems to contribute to patellar clunk syndrome.
authors.affiliation: Department of Orthopedics, P.D.Hinduja National Hospital, Mahim (W), Mumbai, India.
authors.forename: Sanjay R
authors.initials: SR
authors.lastname: Agarwala
authors.forename: Ganesh S
authors.initials: GS
authors.lastname: Mohrir
authors.forename: Aashish G
authors.initials: AG
authors.lastname: Patel
mesh_terms: D000368:Aged; D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects*; D005260:Female; D006801:Humans; D007592:Joint Diseases / Q000209:etiology* / Q000601:surgery; D007719:Knee Joint; D007720:Knee Prosthesis / Q000009:adverse effects*; D008297:Male; D008875:Middle Aged; D010329:Patella; D011474:Prosthesis Design / Q000009:adverse effects*; D012189:Retrospective Studies
keywords: arthroscopy; fibre-like; high flexion; knee arthroplasty; open arthrotomy; patella clunk