What is the appropriate treatment for a full‑thickness supraspinatus tear?

Treatment of Full-Thickness Supraspinatus Tear

For symptomatic full-thickness supraspinatus tears, surgical repair is a reasonable treatment option that demonstrates superior pain relief and functional outcomes compared to conservative management, though conservative treatment with physical therapy succeeds in approximately 77% of patients and should be considered first in appropriate candidates. 1, 2

Initial Management Decision Algorithm

Asymptomatic Tears

• Do not perform surgery for asymptomatic full-thickness tears 1
• The primary indication for rotator cuff repair is significant pain 1
• Asymptomatic tears are highly prevalent in older populations and surgery does not prevent long-term deterioration 1
• Postoperative healing rates are inconsistent in elderly patients, and surgical morbidity is not warranted without symptoms 1

Symptomatic Tears: Conservative vs. Surgical

Conservative Management First-Line:

• Physical therapy achieves satisfactory outcomes in 77% of patients with degenerative full-thickness supraspinatus tears 2
• Exercise therapy improves glenohumeral kinematics, reducing humeral contact path length by 29% and improving strength and patient-reported outcomes 3
• However, tear size, muscle atrophy, and fatty infiltration may progress over 5-10 years with nonsurgical management 4

Predictors of Conservative Treatment Failure (requiring surgery):

• Younger age (mean 58.7 vs 64.8 years) 2
• Manual labor occupation (62.5% vs 44.8%) 2
• Higher BMI 2
• Lower initial functional scores 2
• Previous contralateral shoulder surgery 2
• Larger sagittal tear dimension (14.7mm vs 13.5mm) 2

Surgical Indications

Proceed with surgical repair when:

• Chronic symptomatic full-thickness tears with failed conservative management 1
• Significant pain during shoulder range of motion and at night 1
• Acute traumatic tears in younger patients (age 18-40), where early intervention prevents progression of retraction and atrophy 5

Surgical outcomes:

• 81% of surgical patients report excellent results compared to 37% with nonsurgical treatment 1
• Statistically significant reduction in pain on ROM and night pain compared to conservative treatment 1
• Healed rotator cuff repairs show improved patient-reported and functional outcomes compared to physical therapy and unhealed repairs 4

Surgical Technique Considerations

Arthroscopic repair achieves:

• 71% complete tendon healing rate with tension-band suture technique 6
• Restoration of native glenohumeral contact area and pressure 7
• Prevention of superior humeral head migration 7
• Reduction in compensatory deltoid forces 7

Suture bridge technique vs. single-row:

• Suture bridge demonstrates higher strength outcomes (statistically significant, p=0.04) 8
• Greater range of movement (not statistically significant) 8
• Better overall Constant scores (76.7 vs 72.4), though difference not statistically significant (p=0.298) 8

Prognostic Factors Affecting Surgical Outcomes

Negative predictors of healing and outcomes:

• Age >65 years: Only 43% achieve complete tendon healing compared to younger patients (p<0.001) 6
• Older age correlates with higher failure rates and poorer patient-reported outcomes 4
• Associated delamination of subscapularis or infraspinatus (p=0.02) 6
• Supraspinatus and infraspinatus muscle atrophy and fatty degeneration correlate with worse healing and clinical outcomes 1
• Workers' compensation status correlates with less favorable outcomes 1

Strength outcomes:

• Average shoulder elevation strength significantly better with healed tendons (7.3 kg) versus unhealed (4.7 kg, p=0.001) 6

Timing of Surgery

For acute traumatic tears in young patients:

• Strong correlation exists between time elapsed and progression of retraction (r=0.599) and atrophy (r=0.751) 5
• Significant differences in retraction and atrophy occur between 0-1 month and 1-3 months (p=0.003,0.001) 5
• Further progression occurs between 1-3 months and 3-6 months (p=0.032,0.002) 5
• No significant progression after 6 months (p=0.118,0.057) 5
• Early surgical repair within 3 months is an option for acute injuries 1

Adjunctive Treatments

Subacromial corticosteroid injections:

• Evidence is inconclusive for recommending for or against injections 1
• One level II study found no significant difference between corticosteroid with lidocaine versus lidocaine alone at 6 weeks 1
• Perioperative use: no evidence supports or refutes effects on tendon healing 1

Acromioplasty:

• Moderate evidence does not support routine acromioplasty with arthroscopic repair for small-to-medium tears 4

Hyaluronic acid injections:

• Limited evidence supports use in nonsurgical management 4

Postoperative Rehabilitation

Mobilization timing:

• Similar clinical and patient-reported outcomes for small-to-medium tears between early mobilization and delayed mobilization up to 8 weeks 4
• Evidence is inconclusive regarding timing of active resistance exercises 1

Diagnostic Imaging

MRI is the primary imaging modality:

• MRI without contrast rated 9/9 (usually appropriate) for evaluating rotator cuff tears 9
• High sensitivity and specificity for identifying full-thickness tears 9
• Increased signal intensity extending from inferior to superior tendon surface on all sequences indicates full-thickness tear 9
• MRI, MR arthrography, and ultrasound are equivalent for evaluation, depending on local expertise 9
• Tendon retraction, muscle atrophy, and fatty infiltration on MRI guide surgical decision-making and prognosis 9