title: Patella dislocation following distal femoral replacement after bone tumour resection.
abstract: We report the case of a 16-year-old girl with patella dislocation following distal femur replacement for a malignant tumour. We performed a medial plication and lateral release procedure to treat her persistent patellar dislocation after distal femur replacement following malignant tumour resection. This treatment improved the patient's gait ability dramatically. A distal femur reconstruction with a total knee arthroplasty (TKA) system for tumour resection is a frequently performed procedure. The reported incidence of patella dislocation following distal femur reconstruction with a TKA is 2.3%. However, treatment procedures for patella dislocation following a distal femur replacement after malignant tumour resection have not been studied extensively. To the best of our knowledge, this is the first English case report about patella dislocation following distal femoral replacement focusing on surgical treatment. Our experience suggests that treatment for patella dislocation following distal femur reconstruction with a TKA should be considered positively.
authors: Department of Orthopaedic Surgery, Saitama Medical Center, Jichi Medical University, Saitama, Japan.
authors: Toru
authors: T
authors: Akiyama
authors: Department of Orthopaedic Surgery, Saitama Medical Center, Jichi Medical University, Saitama, Japan.
authors: Shotaro
authors: S
authors: Kanda
authors: Department of Orthopaedic Surgery, Saitama Medical Center, Jichi Medical University, Saitama, Japan.
authors: Akinori
authors: A
authors: Maeda
authors: Department of Orthopaedic Surgery, Saitama Medical Center, Jichi Medical University, Saitama, Japan.
authors: Minoru
authors: M
authors: Endo
authors: Department of Orthopaedic Surgery, Saitama Medical Center, Jichi Medical University, Saitama, Japan.
authors: Kazuo
authors: K
authors: Saita
mesh_terms: D000293:Adolescent; D019645:Arthroplasty, Replacement, Knee / Q000379:methods; D001859:Bone Neoplasms / Q000175:diagnosis / Q000601:surgery*; D005260:Female; D005269:Femur; D006801:Humans; D008279:Magnetic Resonance Imaging; D010027:Osteotomy / Q000009:adverse effects*; D031222:Patellar Dislocation / Q000175:diagnosis / Q000209:etiology* / Q000601:surgery