Treatment of Diffuse Acetabular Labral Tears (Anterior and Lateral)
For diffuse tears of the anterior and lateral acetabular labrum, arthroscopic labral repair with suture fixation is the recommended treatment, particularly when the labral tissue is healthy and repairable, as this approach preserves the labrum's biomechanical function and addresses commonly associated chondral injuries in the anterior acetabulum.
Surgical Approach and Rationale
The anterior and lateral acetabular labrum is the most common site for both labral tears and associated chondral damage 1. Since 59% of chondral injuries occur in the anterior quadrant of the acetabulum and are typically associated with labral tears 1, your treatment must address both pathologies simultaneously.
Key Treatment Algorithm:
Step 1: Assess Labral Tissue Quality
- If the labral tissue appears healthy and viable → Perform arthroscopic suture repair 1
- If the labral tissue is severely degenerated or irreparable → Consider debridement (though this is less ideal for diffuse tears)
Step 2: Address Associated Chondral Injury The anterior location makes concomitant chondral damage highly likely 1. During the same arthroscopic procedure:
- For delaminated cartilage <3 cm²: Perform suture repair of the cartilage flap if it appears healthy, or use fibrin adhesive 1
- For focal defects <4 cm²: Add microfracture to the exposed subchondral bone 1
- For larger lesions >3 cm²: Management becomes more complex; consider cartilage repair techniques if the flap is salvageable 1
Step 3: Correct Underlying Mechanical Issues
- Evaluate and address femoroacetabular impingement (FAI), as delamination injuries and anterior-superior labral tears are commonly associated with FAI 1
- Trim the acetabular rim as needed during labral repair 1
Technical Considerations
The arthroscopic technique involves 1:
- Detaching the labrum from the acetabular rim
- Creating holes in the subchondral bone with a microfracture awl for anchor placement
- Securing the labrum back to the rim with sutures
- Simultaneously repairing any delaminated cartilage in the same area
Evidence Quality and Outcomes
The evidence shows significant functional improvement with this approach. In the largest study on combined labral and cartilage repair, patients demonstrated 1:
- Mean Modified Harris Hip Score (MHHS) improvement from 53.3 to 80.3
- Pain score improvement from 15.7 to 28.9 at 1-year follow-up
- Stable repairs confirmed on revision arthroscopy
Another study using fibrin adhesive for delaminated cartilage (commonly adjacent to labral tears) showed 1:
- MHHS pain subscale improvement from 21.8 to 35.8 (P < 0.0001)
- MHHS function subscale improvement from 40.0 to 43.6 (P = 0.0006)
Critical Pitfalls to Avoid
Don't ignore associated chondral damage: The anterior location means you must inspect for and address cartilage injury during the same procedure 1
Don't overlook FAI: Failure to correct underlying impingement will lead to repair failure 1
Don't debride when you can repair: Labral preservation is superior to debridement for maintaining hip biomechanics, especially with diffuse tears
Patient age matters: Hip-preserving strategies are particularly applicable in younger patients (age ≤50 years) 1. In older patients with advanced osteoarthritis, total hip arthroplasty may be more appropriate.
Important Caveat
The literature acknowledges that evidence for hip chondral and labral management is not sufficiently robust to draw firm conclusions about best practices 1. However, the available data consistently supports arthroscopic repair over debridement for repairable labral tissue, particularly when addressing the commonly associated anterior chondral pathology in a single procedure.