Clinical Research Directory

Voll Degradable Shoulder Spacer FIH Study

The Voll Degradable Shoulder Spacer First-in-Human study aims to evaluate the initial safety, effectiveness, and clinical outcomes of a degradable shoulder spacer in over 50 years old patients with symptomatic massive rotator cuff tears (MRCT).

Effects Of Biceps Transposition Without Tenotomy For Augmentation Of Massive Rotator Cuff Repairs

This prospective, single-arm interventional study will evaluate the effects of long head of the biceps tendon (LHBT) transposition without tenotomy as an augmentation technique for arthroscopic partial repair in adults with massive rotator cuff tears. Consecutive eligible patients undergoing arthroscopic partial rotator cuff repair plus tenotomy-sparing LHBT transposition augmentation at Balikesir City Hospital (Balikesir, Turkiye) will be enrolled and followed for 12 months. Patient-reported outcomes and clinical assessments will be collected preoperatively (baseline) and postoperatively at 3 and 12 months. The primary outcomes are shoulder function (ASES), rotator cuff-related quality of life (WORC converted to a 0-100 scale), and sleep disturbance (Insomnia Severity Index). Secondary outcomes include active shoulder range of motion and biceps-related clinical findings (Speed test, Yergason test, bicipital groove tenderness, and Popeye deformity). Postoperative MRI will not be obtained routinely and will be performed only if clinically indicated. The study aims to provide standardized prospective data on functional outcomes, quality of life, and sleep after this augmentation approach.

Lower Trapezius Tendon Transfer vs Partial Cuff Repair in Massive Rotator Cuff Tears

Very large tears of the shoulder tendons (the 'rotator cuff') that are not surgically repairable and in the absence of significant shoulder arthritis are common in older patients, and are associated with significant pain and functional limitations. Transfer of one particular tendon called the trapezius is becoming popular as a means of restoring function and improving pain in patients with massive rotator cuff tears. This tendon is appealing for transfer, as it has a similar line of pull to the infraspinatus (one of the rotator cuff tendons). There is currently no clear surgical consensus regarding the optimal treatment of patients with symptomatic massive irreparable rotator cuff tears that are appropriate candidates for joint salvage treatment, and no high level of evidence studies to guide clinical decision making have been published. A pilot study is required prior to the development of a full-scale trial to assess its feasibility and recruitment across clinical sites, to determine protocol adherence (errors in randomization), and patient retention over a 12-month period. The main objective of this pilot trial is to assess a composite measure of feasibility including recruitment, protocol adherence, and patient retention at one-year. The secondary objectives, currently exploratory only, are to determine the clinical outcomes of lower trapezius tendon transfer versus arthroscopic rotator cuff partial repair and biceps tenodesis/tenotomy on clinical outcome measures, shoulder function, adverse events and reoperation rates at two-years. This pilot study is a parallel-group multicentre randomized controlled trial with participating sites across Canada, and one site in the United States.