The shoulder is the most mobile joint in the human body, but that mobility comes at the cost of stability, especially under repetitive stress. For swimmers, who may perform thousands of overhead strokes per week, this can lead to overuse injuries. Let’s take a deeper dive into the most common shoulder injuries in swimmers, the anatomical structures involved, and how we treat them effectively in the clinic.
Common Shoulder Injuries in Swimmers
Swimmer’s Shoulder (Shoulder Impingement Syndrome)
This is the most common injury among swimmers and refers to a group of symptoms caused by the impingement (pinching) of soft tissue structures during overhead movement.
Involved Structures:
- Supraspinatus tendon (part of the rotator cuff)
- Subacromial bursa
- Long head of the biceps tendon
- Acromion and coracoacromial arch
Cause: Repetitive overhead strokes (especially freestyle, butterfly, and backstroke) can lead to mechanical compression and inflammation of these tissues, especially if there is muscle imbalance or poor stroke mechanics.
Rotator Cuff Tendinopathy or Tear
Over time, chronic impingement can progress to rotator cuff tendinopathy or even partial tears.
Involved Structures:
- Supraspinatus
- Infraspinatus
- Teres minor
- Subscapularis
Cause: Poor scapular control, excessive training volume, and inadequate recovery contribute to rotator cuff overuse injuries.
Shoulder Instability
Swimmers often have ligamentous laxity, which can lead to micro-instability, especially anterior instability.
Involved Structures:
- Glenohumeral ligaments
- Labrum (especially the anterior inferior labrum)
- Joint capsule
Cause: Hypermobile shoulders combined with repetitive propulsion forces in the water may lead to labral microtrauma or even SLAP (Superior Labrum from Anterior to Posterior) lesions.
Treatment & Rehab Approaches
A swimmer’s shoulder rehab plan must be personalized, progressive, and multimodal. Here’s a breakdown of what a PT typically includes:
Phase 1: Pain Management & Acute Care (Week 1–3)
- Manual Therapy: Soft tissue mobilization of the posterior shoulder (posterior capsule, infraspinatus, teres minor), and subacromial decompression through scapular mobilizations.
- Modalities: Ice, electrical stimulation (TENS or IFC), or ultrasound may be used for acute inflammation.
- Activity Modification: Temporary reduction or elimination of overhead strokes. Kickboard sets or modified strokes may be prescribed.
Phase 2: Restore Range of Motion & Early Strengthening (Week 2–6)
- Stretching: Posterior capsule stretch, cross-body adduction, sleeper stretch.
- Mobility Tools: Foam roller and lacrosse ball for self-myofascial release of pec minor, lats, and upper traps.
- Therapeutic Exercises:
- Scapular control (e.g., wall slides, serratus punches)
- Rotator cuff isometrics progressing to light isotonic work with resistance bands (Theraband external rotation, full can exercises)
Phase 3: Advanced Strengthening & Return to Sport (Week 6–12+)
- Scapular Stabilization: Prone T, Y, and I exercises; dynamic stability drills with resistance tubing.
- Kinetic Chain Training: Core and hip strengthening (important for stroke power and reducing shoulder overload).
- Functional Training:
- Sport-specific drills using resistance cords to simulate swimming motion
- Aquatic therapy for gradual reintroduction of strokes
Phase 4: Stroke Mechanics & Prevention (Ongoing)
- Video Analysis: Collaborate with a swim coach or biomechanist to correct faulty mechanics.
- Dryland Training: Emphasize rotator cuff endurance, scapular stability, and postural control.
- Ongoing Maintenance: 1–2x/week shoulder stability routine for injury prevention.
Recovery Timeline
- Mild impingement or tendinopathy: 6–8 weeks with consistent rehab
- Moderate rotator cuff or labral irritation: 8–12 weeks
- Labral tears or significant instability: 12+ weeks; may require imaging or referral for surgical consult
Final Thoughts
Preventing and managing shoulder injuries in swimmers requires an understanding of not just the pathology, but the whole kinetic chain, training habits, and biomechanics.
As PTs, our role is to restore pain-free function, optimize performance, and work collaboratively with coaches and athletes to prevent reinjury. Book a consultation with a CSC+M physical therapist to receive a personalized rehabilitation plan and return to the water stronger.
