Einer koreanischen Studie zufolge bringt die Teilresektion des Innenmeniskus nach Einreißen keine Vorteile gegenüber einer konservativen Behandlung. Von 102 Pati-enten mit Knieschmerz und degenerativ bedingtem horizontalem Riss im Hinter-horn des Innenmeniskus unterzogen sich 50 einer arthroskopischen Meniskusteil-resektion, 52 machten nur kräftigende Übungen. Hinsichtlich der Funktionsfähigkeit unter-schieden sich operierte Patienten nicht von konservativ behandelten (Durchschnitts-wert im VAS-Score 1,8 vs. 1,7). Nach zwei Jahren waren 68% der Operierten und 67% der konservativ Behandelten komplett schmerzfrei, und die Kniefunktion hatte sich in gleichem Maß verbessert. Die Be-funde sind umso wichtiger, als nach Me-niskektomie das Arthroserisiko steigt und oft Revisionsoperationen nötig sind.

Background Several studies have shown mechanical alignment influences the outcome of TKA. Robotic systems have been developed to improve the precision and accuracy of achieving component position and mechanical alignment. Questions/purposes We determined whether roboticassisted implantation for TKA (1) improved clinical outcome; (2) improved mechanical axis alignment and implant inclination in the coronal and sagittal planes; (3) improved the balance (flexion and extension gaps); and (4) reduced complications, postoperative drainage, and operative time when compared to conventionally implanted TKA over an intermediate-term (minimum 3-year) followup period. MethodsWe prospectively randomized 100 patients who underwent unilateral TKA into one of two groups: 50 using a robotic-assisted procedure and 50 using conventional manual techniques. Outcome variables considered were postoperative ROM, WOMAC scores, Hospital for Special Surgery (HSS) knee scores, mechanical axis alignment, flexion/extension gap balance, complications, postoperative drainage, and operative time. Minimum followup was 41 months (mean, 65 months; range, 41-81 months). Results There were no differences in postoperative ROM, WOMAC scores, and HSS knee scores. The roboticassisted group resulted in no mechanical axis outliers ([ ± 3°from neutral) compared to 24% in the conventional group. There were fewer robotic-assisted knees

The better alignment accuracy of robotic TKA and the good clinical results achieved may favorably influence clinical and radiological outcomes.

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Infection after total knee arthroplasty (TKA) is a devastating complication, and two-stage reimplantation has evolved as an effective treatment option. This study was undertaken to compare the clinical results and radiological changes associated with static or mobile cement spacer placement for the treatment of infected TKA. Between

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PS high-flexion TKA provided greater weight-bearing maximal flexion and posterior femoral roll-back than CR high-flexion TKA, although no difference in clinical outcomes was observed between the two prosthesis designs.

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