title: The effect of patellar replacement technique on patellofemoral complications and anterior knee pain.
abstract: Routine patella replacement with total knee arthroplasty has not been universally adopted because of associated patellofemoral complications such as anterior knee pain (AKP). In the proposed technique, the articular surface of the lateral facet of the patella is excised to the depth of the subchondral bone, and the medial facet is then cut parallel to the anterior surface. We evaluated any correlation between various radiographic parameters and AKP in 100 consecutive fixed-bearing posterior-stabilized total knee arthroplasties. There were no cases of fracture, avascular necrosis, subluxation, dislocation, patellar baja, or overstuffing of the patella. Anterior knee pain was present in 11% of cases, and no cases were severe or disabling. There were no correlations between AKP, range of motion, patellar size and shape, and any of the radiographic parameters.
authors.affiliation: Hospital for Special Surgery, New York, New York 10021, USA.
authors.forename: Morteza
authors.initials: M
authors.lastname: Meftah
authors.forename: Anoop
authors.initials: A
authors.lastname: Jhurani
authors.forename: Javid A
authors.initials: JA
authors.lastname: Bhat
authors.forename: Amar S
authors.initials: AS
authors.lastname: Ranawat
authors.forename: Chitranjan S
authors.initials: CS
authors.lastname: Ranawat
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D018771:Arthralgia / Q000453:epidemiology*; D019643:Arthroplasty, Replacement / Q000379:methods*; D015331:Cohort Studies; D005269:Femur / Q000000981:diagnostic imaging / Q000601:surgery*; D005500:Follow-Up Studies; D006801:Humans; D015994:Incidence; D007719:Knee Joint / Q000000981:diagnostic imaging / Q000503:physiopathology*; D008875:Middle Aged; D010329:Patella / Q000000981:diagnostic imaging / Q000601:surgery*; D011183:Postoperative Complications / Q000453:epidemiology*; D011859:Radiography; D016059:Range of Motion, Articular / Q000502:physiology; D012189:Retrospective Studies; D011795:Surveys and Questionnaires; D016896:Treatment Outcome