title: Medial over-resection of the tibia in total knee arthroplasty for varus deformity using computer navigation.
abstract: We are reporting a series of 35 cases in which downsizing, lateralizing of the tibial baseplate and resection of the uncovered medial plateau bone releases the medial collateral ligament and tightens the lateral collateral ligament. Result in excellent ligamentous balance and correction to neutral mechanical axis. The mean follow up was 32.8 months (11-95 months) and the average pre-operative varus was 9.47° (3.5-15°) with the average post-operative alignment was 0.65° varus. We obtained a mean correction of 0.45° for every mm (millimeter) of bone resected. We did not have any varus collapse or instability. Medial Over-resection could be employed as a technique in the management of varus OA knee with 2mm of resection giving about 10 correction of deformity.
authors.affiliation: Department of Orthopedic Surgery, Buffalo General Hospital, Buffalo, NY.
authors.forename: Kenneth A
authors.initials: KA
authors.lastname: Krackow
authors.affiliation: Department of Orthopedic Surgery, Buffalo General Hospital, Buffalo, NY.
authors.forename: Sivashanmugam
authors.initials: S
authors.lastname: Raju
authors.affiliation: Department of Orthopedic Surgery, Fortis Hospital, Bangalore, India.
authors.forename: Mohan K
authors.initials: MK
authors.lastname: Puttaswamy
mesh_terms: D000368:Aged; D019645:Arthroplasty, Replacement, Knee / Q000379:methods*; D001843:Bone Cements; D003198:Computer Simulation; D006801:Humans; D007717:Knee / Q000601:surgery*; D007719:Knee Joint / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000601:surgery*; D010027:Osteotomy / Q000379:methods*; D012189:Retrospective Studies; D012720:Severity of Illness Index; D013314:Stress, Mechanical; D013977:Tibia / Q000601:surgery*; D016896:Treatment Outcome
chemical_list: D001843:Bone Cements
keywords: medial overresection; navigated TKA; reduction osteotomy; tension stress examination; varus OA knee