Rotator Cuff Tears: Grades, Symptoms, and Recovery

Reviewed by the Physiotherapy Team at Waterloo Sports Medicine Centre 

One common cause of shoulder pain is a rotator cuff tear. Understanding the different grades of rotator cuff tears, their symptoms, and available treatment options can help you recover safely and return to the activities you enjoy. 

What Is a Rotator Cuff Tear? 

The rotator cuff is a group of four muscles and tendons that help stabilize the shoulder and allow you to lift and rotate your arm (SITS: Supraspinatus, Infraspinatus, Teres Minor, Subscapularis). A rotator cuff tear occurs when one or more of these tendons become damaged or torn, either gradually over time or as a result of a sudden injury (Bedi et al., 2024). They can range from mild tendon damage to complete tendon tears. 

What Causes a Rotator Cuff Tear? 

Rotator cuff tears may develop from: 

• Repetitive overhead activities (sports, construction, painting, or manual labour) 

• Age-related tendon degeneration 

• Poor shoulder mechanics 

• Previous shoulder injuries 

• Falls or sudden traumatic injuries 

• Repeated heavy lifting 

  
  

Most rotator cuff tears occur gradually as tendons undergo wear-and-tear over time rather than from a single traumatic event (Bedi et al., 2024). 

Understanding Rotator Cuff Tear Grades 

Rotator cuff tears are commonly classified by severity: 

Grade 1: Tendon Irritation or Strain 

• Mild tendon damage without a significant tear 

• Pain may occur with overhead activities 

• Strength is generally preserved 

  
  

Grade 2: Partial-Thickness Tear 

• The tendon is partially torn but remains attached 

• Pain, weakness, and limited function are common 

• Often responds well to conservative treatment, including physiotherapy 

  
  

Grade 3: Full-Thickness Tear 

• The tendon is completely torn through 

• Significant weakness and difficulty lifting the arm may occur 

• Some full-thickness tears can still be managed conservatively, while others may require surgical consultation depending on symptoms, function, age, and activity demands (Bedi et al., 2024) 

  
  

Common Symptoms 

Symptoms can vary depending on the size and location of the tear but often include: 

• Pain on the outside or front of the shoulder 

• Pain when reaching overhead 

• Weakness when lifting or rotating the arm 

• Difficulty sleeping on the affected side 

• Clicking or catching sensations 

• Reduced range of motion 

  
  

Interestingly, not all rotator cuff tears cause symptoms, and some individuals may have a tear without significant pain (Bedi et al., 2024). 

How Physiotherapy Can Help 

Physiotherapy is often the first line of treatment for many rotator cuff injuries and can be highly effective for reducing pain and improving function. 

Your physiotherapy treatment may include: 

• Comprehensive shoulder assessment 

• Range-of-motion exercises 

• Rotator cuff strengthening 

• Scapular stabilization exercises 

• Manual therapy 

• Activity modification strategies 

• Return-to-work and return-to-sport planning 

  
  

Research consistently supports exercise therapy as an effective treatment for rotator cuff-related shoulder pain and dysfunction (Lafrance et al., 2024). 

At Waterloo Sports Medicine Centre, our physiotherapists develop individualized rehabilitation programs designed to restore strength, improve shoulder mechanics, and help patients return to work, sport, and daily activities safely.