Effect of Joint Immobilization Using Extension Splint Immediately After Total Knee Arthroplasty on Post-Operative Knee Function and Pain: A Randomized Clinical Trial Publisher Pubmed



Kaseb MH¹ ; Moharrami A¹ ; Mirghaderi SP¹ ; Fallah E¹ ; Razzaghof M¹ ; Moazen Jamshidi MM² ; Poopak A¹ ; Mortazavi SMJ¹
Source: International Orthopaedics Published:2022

Abstract

Purpose: Investigate the effect of semirigid extension bracing after total knee arthroplasty (TKA) on articular pain and function. Methods: The present randomized clinical trial included 72 patients undergoing unilateral primary TKA. Patients in the case group received eight days of post-operative semirigid extension-locked knee bracing, whereas controls did not. The outcomes assessed preoperatively and on the first, ninth, 30th day, and one year post-operatively included the knee society score (KSS), functional KSS (FKSS), VAS pain score, amount of postoperative opiate painkiller usage (tablet oxycodone 5mg), and knee ROM. Results: The case group had a significantly lower flexion ROM on postoperative day nine compared to the control group (95.3° vs. 100.8°, p=0.03), while it became significantly higher 1 month (114.1° vs. 104.7°, p=0.03) and one year post-operative (128.0° vs. 120.5°, p=0.002). Also, FKSS was significantly higher in the case group than in the controls in the one month post-operative assessment (37.0 vs. 32.6, p=0.009) but not in the one year post-operative assessment. The case group patients had a significantly lower pain than the controls on days one (5.8 vs. 7.2, p=0.02) and nine post-operative (4.1 vs. 5.2, p=0.048), but not at later assessments. The amount of one month post-operative opium (oxycodone) consumption was significantly lower in the brace group (12.4 vs. 14.1 tablets, p=0.03). The KSS were not significantly different between the groups after the surgery. Conclusion: Extension-locked splinting immediately after TKA is a noninvasive, non-pharmacological, and inexpensive intervention with possible promising effects on knee ROM, short-term functional improvement, and acute post-operative pain management. © 2022, The Author(s) under exclusive licence to SICOT aisbl.