title: Navigated TKA After Osteotomy Versus Primary Navigated TKA: A Matched-Pair Analysis.
abstract: This article presents clinical and radiological outcome analysis of navigated total knee arthroplasty (TKA) following osteotomy compared with primary navigated TKA implantation. The study group (29 legs) received navigated TKA (Columbus with deep-dish, cruciate-retaining inlay, Aesculap AG, Tuttlingen, Germany) following distal femoral (6 legs) or high tibial (23 legs) osteotomy, and the control group (29 legs) received a primary navigated TKA. All patients were examined clinically and radiologically in a retrospective matched-pair analysis. Both groups showed comparable clinical scores (Oxford Knee Score, Tegner and Lysholm scores, and Knee Society Score). Radiological evaluations offered no relevant differences. The study group showed a significant mediolateral ligamentous instability (3 legs ≤5°, 1 leg 6°-9°, 25 legs ≥10° mediolateral deviation) compared with the control group (14 legs ≤5°, 9 legs 6°-9°, 6 legs >10°; P<.001). Significantly higher mediolateral ligamentous instability was seen in otherwise comparable clinical and radiological results in patients with navigated TKA implantation following osteotomy, compared with primary TKA. [Orthopedics; 2016. 39(3):S77-S82.].
authors.forename: Vanessa
authors.initials: V
authors.lastname: Fröhlich
authors.forename: Sabrina
authors.initials: S
authors.lastname: Johandl
authors.forename: Peter
authors.initials: P
authors.lastname: De Zwart
authors.forename: Ulrich
authors.initials: U
authors.lastname: Stöckle
authors.forename: Björn Gunnar
authors.initials: BG
authors.lastname: Ochs
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D019645:Arthroplasty, Replacement, Knee / Q000379:methods*; D005260:Female; D005269:Femur / Q000601:surgery; D006801:Humans; D007719:Knee Joint / Q000601:surgery*; D008297:Male; D016555:Matched-Pair Analysis; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000601:surgery*; D010027:Osteotomy / Q000009:adverse effects; D012189:Retrospective Studies; D025321:Surgery, Computer-Assisted; D013977:Tibia / Q000601:surgery; D055815:Young Adult