Comparison of the clinical and functional outcomes of two immobilisation protocols after arthroscopic peripheral triangular fibrocartilage complex (TFCC) repair in adults: a single-centre, double-blinded randomised controlled trial protocol.

Introduction: Injury to triangular fibrocartilage complex (TFCC) is a common cause of ulnar-sided wrist pain, of which peripheral TFCC tears are amenable to repair. The surgical approaches to treat TFCC tears are well-established, with arthroscopic or arthroscopic-assisted repair as the preferred method. However, the postoperative rehabilitation protocols significantly vary across different studies, ranging from 2 to 9 weeks, often without sufficient justification.

Methods And Analysis: This research is designed to conduct a randomised controlled trial at a single centre with double-blinding to compare the clinical and functional results of two immobilisation protocols of 3 weeks and 6 weeks, following arthroscopic repair of peripheral TFCC tears (ie, Palmar 1B, 1C and 1D) in adults, considering the phase of ligament healing. The hypothesis that there will be no significant difference in outcomes between the two groups is considered. Adults aged 18-60 years of both genders who present with ulnar-sided wrist pain and satisfy the inclusion criteria are included in the study. Following the arthroscopic TFCC repair using the Polydioxanone Suture (PDS) inside-out suture technique, the patients will be immobilised in an above-elbow cast according to their assigned immobilisation groups, which will be determined by a computer-generated 1:1 block randomisation. In this study, each group will have at least 16 participants. The primary outcomes will be evaluated by the weight-bearing press test and the ballottement test. Secondary outcomes, including the Visual Analogue Scale (VAS) score, grip strength, pinch strength, foveal sign, Modified Mayo Wrist Score (MMWS), patient-rated wrist/hand evaluation (PRWHE) score and the range of movements in the wrist and forearm, will be assessed and compared across the groups at each point of assessment, with the results subsequently reported in a detailed manner. The study will be reported in accordance with Consolidated Standards of Reporting Trials (CONSORT) guidelines.

Ethics And Dissemination: The Ethics Committee of Kasturba Medical College, Manipal, approved the trial (approval No. IEC1 - 386). The data from this trial will be presented at academic conferences and published in peer-reviewed international journals.

Trial Registration Number: This trial has been registered at the Clinical Trial Registry of India (registration number: CTRI/2023/03/050692).