title: Early failure of unicompartmental knee arthroplasty.
abstract: We are reporting the relatively poor results obtained in patients receiving a unicompartmental knee arthroplasty (UKA). Thirty-six patients underwent 39 UKAs from December 2002 to June 2004. All received a DePuy Preservation design (DePuy, Warsaw, In) with an all-poly tibial component. The patients' mean age was 60 years, with an equal distribution of men to women. Of the 39 UKAs, 15 (38%) failed at 9 to 12 months postoperative. All the failures were secondary to loosening of the femoral component. No correlation to failure was found between preoperative antero-posterior (AP) angle, postoperative AP angle, amount of correction obtained, postoperative posterior tibial slope, lateral femoral component alignment, postoperative range of motion, sex, or size of the patient.
authors.affiliation: Salt Lake Orthopaedic Clinic, Salt Lake City, Utah 84124, USA.
authors.forename: E Marc
authors.initials: EM
authors.lastname: Mariani
authors.forename: Michael H
authors.initials: MH
authors.lastname: Bourne
authors.forename: Richard T
authors.initials: RT
authors.lastname: Jackson
authors.forename: Scott T
authors.initials: ST
authors.lastname: Jackson
authors.forename: Portia
authors.initials: P
authors.lastname: Jones
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee / Q000379:methods; D005260:Female; D006801:Humans; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design; D017211:Treatment Failure