What is the best course of treatment for a patient with MRI findings indicating a full-thickness partial width tear of the anterior supraspinatus tendon, insertional subscapularis tendinosis, mild rotator cuff muscle atrophy, mild to moderate acromioclavicular joint osteoarthrosis, and small glenohumeral joint effusion?

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Simplified Portal Message for MRI Findings

Your MRI shows a significant tear in your rotator cuff (the main shoulder tendon) along with arthritis and inflammation that will require treatment—I recommend starting with physical therapy and discussing both non-surgical and surgical options with an orthopedic specialist.

What the MRI Found

The Main Problem - Rotator Cuff Damage

  • You have a complete tear through part of your supraspinatus tendon (the main tendon on top of your shoulder), though it doesn't extend across the entire width of the tendon 1, 2
  • There's also early damage (tendinosis) to two other shoulder tendons: the infraspinatus and subscapularis 2
  • Your rotator cuff muscles show mild shrinkage (atrophy), which happens when tendons are torn 1, 3

Additional Findings

  • Moderate arthritis where your collarbone meets your shoulder blade (AC joint), with bone spurs that may be pinching the space above your rotator cuff 2
  • Mild inflammation in the fluid sac above your shoulder (bursa) and a small amount of fluid in the main shoulder joint 2
  • Good news: Your biceps tendon is intact, and there are no bone fractures 2

Recommended Treatment Plan

Start with Conservative Management (3-6 Months)

  • Physical therapy is essential and should focus on strengthening your rotator cuff, stabilizing your shoulder blade, and improving range of motion 1, 4
  • Modify activities to avoid repetitive overhead movements and heavy lifting that stress the damaged tendon 4
  • Pain management with anti-inflammatory medications (NSAIDs) and ice therapy (10-minute sessions through a wet towel) 4
  • Consider a cortisone injection into the shoulder space if inflammation is limiting your therapy progress 1, 2

When Surgery Becomes Necessary

  • Refer to orthopedic surgery if you don't improve after 3-6 months of structured physical therapy 1, 4
  • Surgical repair aims to reattach the torn tendon to bone, which provides better long-term outcomes than leaving it torn 1, 2
  • Important: If surgery is performed, your surgeon should NOT routinely remove bone from your acromion (acromioplasty), as studies show this doesn't improve outcomes for your type of shoulder anatomy 2, 4

What to Expect

If Conservative Treatment Works

  • Most patients see improvement in pain and function within 3-6 months 1, 4
  • You'll need to continue maintenance exercises long-term to prevent worsening 1

If Surgery Is Needed

  • Recovery requires wearing a sling for 4-6 weeks followed by several months of rehabilitation 2, 4
  • Even with successful tendon healing, some fatty changes in the muscle may persist, though function typically improves significantly 3, 5
  • The goal is achieving tendon-to-bone healing, which correlates with better clinical outcomes 1, 2

Critical Points to Remember

  • Don't delay starting physical therapy—muscle atrophy worsens with complete rest 4
  • Avoid cortisone injections directly into the tendon (as opposed to the space around it), as this can weaken the tendon further 4
  • The combination of your tear pattern, mild muscle atrophy, and arthritis means this won't heal on its own without intervention 1, 6

References

Guideline

Treatment of Shoulder Pain with PMR History and Supraspinatus Full-Thickness Partial-Width Tear

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025

Guideline

Shoulder Injury Diagnosis and Treatment

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025

Guideline

Treatment of Partial Articular Supraspinatus Tendon Avulsion (PASTA Lesions)

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025

Research

Long-term MRI findings in operated rotator cuff tear.

Acta radiologica (Stockholm, Sweden : 1987), 2004

Research

MR imaging of rotator cuff injury: what the clinician needs to know.

Radiographics : a review publication of the Radiological Society of North America, Inc, 2006

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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