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Study Published in Journal of Shoulder and Elbow Surgery Shows Bioinductive Implant Increases Tendon Thickness for Intermediate- to High-Grade Partial Thickness Tears
Theodore F. Schlegel, MD, lead investigator of the study and orthopedic surgeon at Steadman Hawkins Clinic Denver commented: “Partial thickness rotator cuff tears do not heal spontaneously and have a high propensity to increase in size and/or develop into full-thickness lesions. He said, “This study shows that the Bioinductive Implant not only repairs the tear and increases tendon thickness, but it also prevents tear progression. In addition, because the native tendon footprint remains intact around the location of the defect, the Bioinductive Implant may accelerate rehabilitation and recovery as compared with more conservative postoperative management when partial thickness lesions are taken down and repaired as full thickness tears.”
The study enrolled 33 patients with chronic, degenerative, intermediate- (n=12) to high-grade (n=21) partial-thickness tears (11 articular, 10 bursal, four intra-substance, eight hybrid) of the supraspinatus tendon. Clinical outcomes were assessed using American Shoulder and Elbow Surgeons (ASES) and Constant-Murley scores preoperatively and at three and 12 months postoperatively. Magnetic resonance imaging (MRI) was performed to assess postoperative tendon healing and thickness at the original tear site. One-year results of the multi-center study include:
- Clinical scores improved significantly (p<0.0001), and mean tendon thickness increased by 2.0 mm (p<0.0001); new tissue was indistinguishable from the underlying tendon.
- 94 percent of patients experienced complete healing or considerable reduction in defect size; consistent partial to complete fill-in of the original bursal, intrasubstance and articular partial-thickness tear defects were observed as early as three months postoperatively, with sustained efficacy through 12 months.
- 94 percent of patients either agreed or strongly agreed that they were satisfied with the results of their surgery.
- No tears progressed to full-thickness in patients who followed the postoperative rehabilitation protocol.
- No serious adverse events related to the implant were reported.
“In addition to further demonstrating that our Bioinductive Implant increases tendon thickness and prevents re-tears, we are pleased that the majority of patients in this study said they were satisfied with the results of their rotator cuff surgeries,” said Martha Shadan, president and CEO of Rotation Medical. “As health systems transition to value-based care, data like these are becoming increasingly necessary to demonstrate the effectiveness of medical devices on indicators such as patient satisfaction, in addition to key health economic drivers that we are measuring in our REBUILD Registry Study.”
The study, “Radiologic and clinical evaluation of a bioabsorbable collagen implant to treat partial-thickness tears: a prospective multi-center study,” adds to the growing body of literature supporting the use of the Rotation Medical Bioinductive Implant as a novel treatment for rotator cuff injury. Additional publications and information about the Rotation Medical rotator cuff system are available on the company’s website.