Prognostic factors that predict failure of manipulation under anesthesia for the stiff total knee arthroplasty: A systematic review.

Gu, Alex; Michalak, Adam J; Cohen, Jordan S; Stepan, Jeffrey G; Almeida, Neil D; McLawhorn, Alexander S; Sculco, Peter K · J Orthop · 2018

systematic_review · Level I

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Abstract

Prognostic factors associated with Manipulation under anesthesia (MUA) failure remain unknown. A systematic review of the literature was performed to identify studies that reported prognostic factors associated with MUA for postoperative stiffness. 7 studies analyzing prognostic factors associated with MUA outcomes were included. Several studies note pre-MUA ROM to be a significant prognostic factor affecting post-MUA ROM at final follow-up. Knees with <70° of flexion pre-MUA had less final flexion arc than those with >70°. The strongest prognostic factor for decreased ROM after MUA is severe pre-MUA stiffness.

Anatomy