Postoperative New-Onset Pseudoparalysis: A Retrospective Analysis of 430 Consecutive Arthroscopic Repairs for Large to Massive Rotator Cuff Tears:

Background:The authors have sometimes encountered postoperative new-onset pseudoparalysis (PONP) after arthroscopic repair for large to massive rotator cuff tear (ARCR). As there are insufficient data regarding PONP, the authors aimed to determine whether such a condition is characterized by obvious risk factors, as well as to assess the conditions under which it can be reversed.Purpose:To evaluate the predictors of PONP development after ARCR and its reversal and to integrate these predictors into a scoring system that can be applied in clinical practice.Study Design:Case-control study; Level of evidence, 3.Methods:The authors retrospectively analyzed 430 consecutive ARCRs performed between March 2010 and May 2016. Patients were stratified according to the occurrence of PONP. To determine the risk factors of PONP, the authors compared the PONP and control groups (patients who did not experience PONP) in terms of demographic, clinical, and operative characteristics. Results were expressed in terms of odds...