Bioinductive Collagen Augmentation in Arthroscopic Rotator Cuff Repair: 24-Month MRI and Clinical Outcomes

Area of Science:

• Orthopedic Surgery
• Biomaterials Science
• Regenerative Medicine

Background:

• Rotator cuff repair (RCR) healing is influenced by patient factors and tissue quality.
• Bioinductive collagen implants enhance tendon healing and reduce retear rates.
• Xeno-derived collagen membranes offer a potential augmentation for RCR.

Purpose of the Study:

• To evaluate clinical and imaging outcomes of RCR augmented with a xeno-derived collagen membrane over 24 months.
• To assess complications and implant failures associated with the augmentation.
• To determine the efficacy of bioinductive implants in improving RCR healing.

Main Methods:

• Prospective single-arm case series of arthroscopic RCR with xeno-derived matrix augmentation.
• Inclusion of patients >40 years with full-thickness supraspinatus/infraspinatus tears (DeOrio-Cofield grade 3-4).
• Clinical assessment via Constant-Murley Score (CMS), DASH, and VAS; MRI for tendon thickness at baseline and 24 months.

Main Results:

• Significant improvements observed in CMS, VAS, and DASH scores (p < 0.05).
• Supraspinatus tendon thickness increased from 4.2 ± 0.9 mm to 6.8 ± 1.2 mm (p < 0.05).
• Retear rate was 7.55% with no major implant-related complications.

Conclusions:

• Bioinductive collagen implant augmentation in RCR leads to improved tendon thickness and excellent clinical outcomes.
• The xeno-derived collagen membrane demonstrated a favorable safety profile with no adverse reactions.
• Further research with a control group is warranted to confirm findings, but results support implant efficacy.