title: Bilateral patellar component dissociation in a patient with total knee arthroplasties.
abstract: We present a case of bilateral patellar component dissociation 6 years after bilateral total knee arthroplasty. The patient had undergone arthroscopic lateral releases bilaterally for patellar maltracking. After repetitive trauma, the patient experienced patellar component dissociation, which was treated arthroscopically by removing the patellar components and leaving the patellae unresurfaced. The patient's symptoms improved substantially. Our case highlights certain features of the etiology as well as the management of patellar component dissociation in the total knee arthroplasty, showing the important role of arthroscopy.
authors.affiliation: Knee and Shoulder Arthroscopy Unit, Royal Orthopaedic Hospital NHS Trust, Birmingham, England, UK. ilbisb@doctors.org.uk
authors.forename: Ilias
authors.initials: I
authors.lastname: Bisbinas
authors.forename: Sughran
authors.initials: S
authors.lastname: Banerjee
authors.forename: Duncan J A
authors.initials: DJ
authors.lastname: Learmonth
mesh_terms: D000368:Aged; D019645:Arthroplasty, Replacement, Knee; D001182:Arthroscopy; D005260:Female; D006801:Humans; D007720:Knee Prosthesis; D010003:Osteoarthritis / Q000601:surgery; D031222:Patellar Dislocation / Q000209:etiology* / Q000473:pathology; D011183:Postoperative Complications / Q000209:etiology*; D011475:Prosthesis Failure