FP13.1 Early Outcomes During Open Gluteal Tendon Reconstruction Utilizing a Bioinductive Bovine Patch Yields Comparable Patient Reported Outcomes, Complications, and Survivorship to Open Gluteal Tendon Repair Without Augmentation

Abstract ICLB13 - Outside the Joint: Mastering Extra-Articular Pain and Hip-Spine Basics, Session Room 6 (BMCC Level 3), October 9, 2026, 14:00 - 16:00 Background Gluteus medius and minimum tendon tears are an increasingly recognized source of lateral hip pain and dysfunction, with surgical repair demonstrating favorable outcomes in appropriately selected patients. Bioinductive bovine collagen patches have been introduced as a potential adjunct to enhance tendon healing; however, evidence supporting their use in gluteal tendon repair remains limited. Methods Patients who underwent primary open gluteal tendon repair by two surgeons between 12/2022-10/2024 with ≥1-year follow-up were included. The bioinductive bovine patch was implemented in all of the senior author’s repairs while no augmentation served as the control group by the co-senior author. Tendon fatty atrophy, tear grade, quality, and retraction were recorded. Patient reported outcome measures (PROs) were assessed preoperatively and at ≥1-year postoperatively, including Hip Outcome Score (HOS) Activities of Daily Living (HOS-ADL), HOS Sport Specific Subscale (HOS-SS), 12-Item International Hip Outcome Tool (iHOT-12), Patient-Reported Outcomes Measurement Information System (PROMIS) Pain Interference (PROMIS-PI), and PROMIS Physical Function (PROMIS-PF). Achievement of minimal clinically important difference (MCID), patient acceptable symptom state (PASS), postoperative complications, and reoperation rates were compared. Results Outcomes of 34 patients who received the bovine patch were compared to 29 non-augmented patients. Both cohorts experienced significant improvement from preoperative to postoperative benchmarks (P<.001). Patient reported outcomes at minimum 1-year were comparable across all PROs (P>.648). There was comparable improvement from baseline between the groups (P>.087). Both groups reported high rates of any MCID achievement (96.8% vs. 100%; P>.999) and any PASS achievement (80.6% vs 78.6%; P>.999). There were no differences in postoperative complications (P>.208) or reoperations (P>.205). Conclusions Primary open gluteal tendon repair augmented with a bioinductive bovine patch are similar to non-augmented primary repair and both resulted significant improvements in patient-reported outcomes at minimum 1-year follow-up, with high rates of MCID and PASS. Bioinductive augmentation is a safe and effective adjunct in the surgical management of gluteal tendon tears, but longer term studies will be needed to determine if there is any benefit over non-augmented gluteal tendon repairs.