Shoulder Pain: Common Causes and How Physiotherapy Can Help

The shoulder is the most mobile joint in the body, which also makes it one of the most vulnerable to injury and dysfunction. At Apex Performance & Health in Mississauga, shoulder pain is one of the most frequent complaints we treat. Whether the cause is a sports injury, a workplace strain, or years of accumulated postural stress, physiotherapy offers effective, non-invasive treatment options that address the underlying problem rather than just masking symptoms.

Rotator Cuff Injuries

The rotator cuff is a group of four muscles and their tendons that stabilize the shoulder joint and control overhead and rotational movements. Injuries to the rotator cuff range from mild tendinitis and tendinopathy to partial and full-thickness tears.

Rotator cuff problems are common in both athletes and office workers. Repetitive overhead movements, sudden trauma, and age-related degeneration can all contribute. Symptoms typically include pain on the side of the shoulder, difficulty reaching overhead, and weakness when lifting or rotating the arm.

Physiotherapy for rotator cuff injuries focuses on reducing pain, restoring range of motion, and progressively strengthening the rotator cuff muscles along with the surrounding scapular stabilizers. Many rotator cuff injuries respond well to conservative treatment, and surgery is often avoidable when rehabilitation is started early and followed consistently.

Frozen Shoulder (Adhesive Capsulitis)

Frozen shoulder is characterized by a gradual onset of pain and stiffness that significantly limits shoulder movement. It typically progresses through three stages: the freezing stage (increasing pain and stiffness), the frozen stage (reduced pain but persistent restriction), and the thawing stage (gradual return of movement).

This condition is more common in individuals between 40 and 60 years of age and occurs more frequently in people with diabetes. Recovery can take twelve to twenty-four months without intervention, but physiotherapy can shorten this timeline and reduce the impact on daily life.

At Apex Performance & Health, we use a combination of manual therapy, gentle stretching, and exercise to maintain and gradually improve range of motion during each stage. Treatment is adjusted based on where the patient is in the progression, with the understanding that pushing too aggressively during the freezing phase can worsen symptoms.

Shoulder Impingement

Shoulder impingement occurs when the tendons of the rotator cuff or the subacromial bursa become compressed during overhead movements. This creates a pinching sensation and pain, particularly when reaching above shoulder height or behind the back.

Contributing factors include poor posture, weakness in the rotator cuff or scapular muscles, and tightness in the chest and front of the shoulder. Impingement is common in swimmers, overhead athletes, and people who spend long hours at a desk.

Treatment targets the mechanical causes of impingement. Strengthening the rotator cuff and scapular muscles improves how the shoulder blade moves during arm elevation, creating more space in the subacromial area. Postural correction and mobility exercises for the thoracic spine are also important components.

Desk-Related Shoulder Pain

Prolonged sitting at a desk with rounded shoulders and a forward head posture places significant strain on the muscles and joints of the shoulder complex. Over time, the muscles at the front of the shoulder tighten while the stabilizers at the back weaken, creating an imbalance that leads to pain.

At our Mississauga clinic, we see this pattern frequently in patients who work at computers for extended periods. Treatment includes hands-on soft tissue work, stretching for the pectorals and upper trapezius, strengthening for the mid and lower trapezius and serratus anterior, and practical ergonomic recommendations for the workstation.

Treatment Approaches at Apex Performance & Health

Our approach to shoulder pain begins with a detailed assessment that identifies the specific structures involved, the contributing factors, and the patient’s functional goals. From there, treatment typically includes:

• Manual therapy to improve joint mobility and reduce muscular tension
• Targeted strengthening for the rotator cuff, scapular stabilizers, and surrounding musculature
• Movement retraining to correct faulty patterns that contribute to pain
• Home exercise programming that patients can perform independently to maintain progress between visits
• Ergonomic and lifestyle guidance to address factors outside the clinic that influence symptoms

Shoulder pain does not have to limit your daily activities or keep you from the things you enjoy. If you are experiencing shoulder discomfort, the team at Apex Performance & Health in Mississauga can help identify the cause and develop a plan to get you moving comfortably again.