DOS 2020

188 · DOS Abstracts Manipulation under anesthesia after TKA – gain in range of motion – A cohorte study Hanne Hornshøj, Carten Juhl, Thomas Lind Afdeling for Ergoterapi og Fysioterapi, Copenhagen University Hospital, Herlev and Gentofte; Ortopædkirurgisk Afdeling, Copenhagen University Hospital, Herlev and Gentofte Background: Reduced Range of Motion (ROM) in the knee due to stiffness (arthrofibrosis) after TKA is often treated with manipulation under anaesthesia anaesthesia (MUA). Purpose / Aim of Study: To determine the effect of MUA after TKA on ROM and to identify factors affecting the final ROM after MUA Materials and Methods: Patients receiving MUA at Gentofte Hospital after TKA performed from 2011 to 2015 were included. Age, gender, BMI, smoking, comorbidity, type of operation (primary or re-TKA) flexion and extension were extracted from electronic patient records. Assuming missing data is at random multiple imputations were performed, based on age, sex and post-operative range of motion. Findings / Results: In total 104 participants (57 women) with at mean age of 60.7 years and BMI at 27.8 were included. A mean increase from before MUA to follow-up at 3 months of 21.3 degrees (95% CI 16.6 to 25.9) in flexion to 102.3 degrees (95% CI 98.8 to 105.9) and a mean decrease of 4.8 degrees (95% CI 3.0 to 6.7) in extension deficit to 3.7 degrees (95% CI 2.7 to 4.6) at follow-up were found. A subgroup of 14 participant reviewed more than one MUA, showing a mean increase from before MUA to follow up were found. A subgroup of 14 participant reviewed more than one MUA, showing a mean in- crease from before MUA to follow-up o of 24,3 (95% CI 10.8 to 37.8) in flexion a and a mean decrease of 6.8 (95% CI 2 2.4 to 11.0) in extension deficit. The mean increase in flexion was 9.3 degrees (95% CI: -4.7 to 23.2), from f first to last MUA. Mean flexion at final f follow up was 99.6 degrees (95% CI: 8 88.1 to 111.2). The mean decrease in e extension the was 3.2 degrees (95% C CI: 7.5 to 1.1) from first to last MUA. M Mean extension deficit at final follow u up was 2.0 degrees (95% CI: 0.2 to 3 3.8) Patients with DM showed significant improvement in flexion at mean 33.5 degrees (95% CI: 21.8 to 45.2) to mean flexion at 100.9 degrees (95% CI; 94.2 to 107.6) at final follow-up. The exten- sion-deficit reduced with 3.9 degrees (95% CI: -8.9 to 1.1) to a mean deficit at 5 degrees (95% CI: 0.2 to 9.8) at final follow-up. Conclusions: A clinical important increase in flexion an and reduction in exten- sion deficit was se seen, even in those failing the first MU MUA and patient with DM. 167.