title: Posterior dislocation of meniscal bearing insert in mobile bearing unicompartmental knee arthroplasty mimicking a Baker cyst.
abstract: Unicompartmental knee arthroplasty (UKA) is a well-established procedure for isolated medial compartment osteoarthritis. Meniscal dislocation is a well-recognized complication in mobile bearing UKA especially when performed for the lateral compartment. Dislocation in medial UKA is relatively uncommon and is usually anterior when encountered. We would like to report a case of posterior dislocation of the bearing insert in a mobile bearing medial UKA presenting as a Baker cyst, which was subsequently revised to total knee arthroplasty.
authors.affiliation: Trauma and Orthopaedics Surgery, Luton and Dunstable Hospitals NHS Foundation Trust, Luton, UK.
authors.forename: Vinay Kumar
authors.initials: VK
authors.lastname: Singh
authors.forename: Sunil
authors.initials: S
authors.lastname: Apsingi
authors.forename: Saikrishna
authors.initials: S
authors.lastname: Balakrishnan
authors.forename: Sanjiv
authors.initials: S
authors.lastname: Manjure
mesh_terms: D019645:Arthroplasty, Replacement, Knee; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D004204:Joint Dislocations / Q000175:diagnosis* / Q000209:etiology*; D007719:Knee Joint; D007720:Knee Prosthesis / Q000009:adverse effects*; D008592:Menisci, Tibial; D008875:Middle Aged; D011151:Popliteal Cyst / Q000175:diagnosis*; D011474:Prosthesis Design; D011475:Prosthesis Failure / Q000009:adverse effects*