title: Influence of lateral release on patellar tracking and patellofemoral contact characteristics after total knee arthroplasty.
abstract: The influence of lateral release of retinaculum on patellofemoral kinematics and contact characteristics after total knee arthroplasty was investigated in vitro. Lateral release altered the patellar tracking in patellar flexion, rotation, tilting, and translation. The contact force was decreased at high flexion angles. The contact area was slightly decreased and the contact region shifted laterally on the patellar button and medially on the femoral component at most of the flexion angles. The results suggest that the lateral release in total knee arthroplasty can change some patellar tracking and patellofemoral joint contact characteristics.
authors.affiliation: Department of Orthopedic Biomechanics Laboratory, Mayo Clinic, Rochester, MN 55905, USA.
authors.forename: H C
authors.initials: HC
authors.lastname: Hsu
authors.forename: Z P
authors.initials: ZP
authors.lastname: Luo
authors.forename: J A
authors.initials: JA
authors.lastname: Rand
authors.forename: K N
authors.initials: KN
authors.lastname: An
mesh_terms: D002102:Cadaver; D005260:Female; D006801:Humans; D004204:Joint Dislocations / Q000209:etiology; D007719:Knee Joint / Q000502:physiology; D007720:Knee Prosthesis / Q000009:adverse effects / Q000379:methods; D008297:Male; D008875:Middle Aged; D010329:Patella / Q000293:injuries / Q000502:physiology*; D017847:Patellar Ligament / Q000601:surgery