Partial-Thickness Rotator Cuff Tears: Current Concepts.

Area of Science:

• Orthopedics
• Sports Medicine
• Shoulder Surgery

Background:

• Partial-thickness rotator cuff tears (PTRCTs) are prevalent, especially in overhead athletes.
• Understanding PTRCT anatomy, histology, and classification (Ellman's) is crucial.
• Radiographic predictors like critical shoulder angle and acromial index are gaining attention.

Purpose of the Study:

• To review the current understanding of PTRCTs.
• To discuss tear progression, management strategies, and emerging augmentation techniques.

Main Methods:

• Literature review of PTRCTs.
• Analysis of anatomical, histological, and radiographic findings.
• Evaluation of conservative and surgical management outcomes.
• Assessment of evidence for biologic augmentation therapies.

Main Results:

• PTRCT progression rates vary (4-44%) and correlate with symptoms and activity levels.
• Conservative management is the primary approach for most PTRCTs.
• Surgical options include arthroscopic debridement/acromioplasty (<50% thickness) or repair (>50% thickness).
• Leukocyte-poor platelet-rich plasma shows promise for augmentation, while other biologics require further study.

Conclusions:

• PTRCTs require individualized management based on tear characteristics and patient factors.
• Conservative treatment is the initial standard for PTRCTs in overhead athletes.
• Augmentation with leukocyte-poor platelet-rich plasma is a promising adjunct, but further research is needed for other biologics and scaffolds.