Tennis Shoulder

Overview

Tennis shoulder is overuse shoulder pain that develops in tennis players and other racquet-sport athletes from the repeated overhead motions of serving and hitting overheads. Although the elbow is the most famous tennis injury, the shoulder takes substantial load during the serve, which involves rapid overhead acceleration much like throwing.

The most common underlying problem is rotator cuff tendinitis and impingement, where the tendons that stabilize and move the shoulder become irritated and pinched. Less often, the labrum or the joint capsule is involved. Tennis shoulder usually builds up gradually and responds well to rest, technique adjustments, and strengthening.

Although the name highlights tennis, the same pattern affects players of other racquet and overhead sports, such as badminton, squash, and pickleball. The shoulder is asked to accelerate and then decelerate the arm rapidly during the serve, and the muscles that control this motion can become overworked. Most players recover fully when the problem is recognized early and the contributing factors are corrected rather than ignored.

Symptoms

Players typically notice:

• Shoulder pain during or after serving and overhead shots
• Pain with reaching overhead in daily life
• Aching at night or when lying on the affected side
• Weakness or fatigue in the shoulder during play
• A pinching or catching sensation when raising the arm
• Reduced serve power or accuracy

Causes

Tennis shoulder arises from repeated overhead stress combined with contributing factors:

• Repetitive serving: The overhead serve repeatedly loads the rotator cuff and can pinch tendons.
• Technique flaws: Poor serve mechanics, dropped elbow, or inadequate trunk rotation increase shoulder strain.
• Muscle imbalance and fatigue: Weak rotator cuff and shoulder-blade muscles allow impingement.
• Equipment and load: A racquet that is too heavy or strung too tightly, and sudden increases in play, add stress.
• Inadequate recovery: Playing through pain without rest perpetuates inflammation.

Often several of these factors combine. For example, a player who suddenly increases practice time, uses a heavier racquet, and has weak shoulder-blade muscles is far more likely to develop pain than one who changes only one variable. Identifying each contributing factor is part of effective treatment.

Risk Factors

• Frequent play with many serves and overhead shots
• Rapid increases in playing volume or intensity
• Faulty serve mechanics
• Weak rotator cuff and shoulder-blade stabilizing muscles
• Older age and prior shoulder problems
• Inadequate warm-up

Diagnosis

A clinician diagnoses tennis shoulder mainly from the playing history and a physical examination that tests strength, flexibility, and impingement. Additional studies may include:

• Movement and serve analysis: Identifying technique faults that overload the shoulder.
• Ultrasound or MRI: Used if a rotator cuff tear or labral injury is suspected.
• X-rays: To rule out bone spurs or arthritis.

Treatment

Most cases improve with conservative care:

• Relative rest: Reducing serving and overhead shots to offload the shoulder.
• Physical therapy: Strengthening the rotator cuff and shoulder-blade muscles and improving flexibility.
• Technique and equipment changes: Refining serve mechanics and adjusting racquet weight or string tension.
• Pain relief: Ice and anti-inflammatory medicine for flare-ups.
• Gradual return: Slowly rebuilding serving volume as pain settles.

Surgery is rarely needed and is reserved for a confirmed structural injury that does not respond to rehabilitation.

A common mistake is returning to full play too quickly once the pain eases. A gradual buildup of serving and overhead shots, while continuing strengthening exercises, helps the shoulder adapt and lowers the risk that the pain returns. Many players benefit from periodic technique reviews with a coach and from building rest days into their schedule, especially during heavy training or tournament periods.

Prevention

• Maintain rotator cuff and shoulder-blade strength
• Use sound serve technique with good trunk rotation
• Warm up thoroughly before play
• Increase playing volume gradually
• Choose appropriate racquet weight and string tension, and rest when pain develops

When to See a Doctor

See a doctor or sports clinician if shoulder pain persists despite rest and technique changes, disturbs your sleep, or comes with arm weakness. Seek prompt care for sudden severe pain, a feeling that the shoulder slipped out of place, or numbness and tingling down the arm, which point to an injury beyond simple overuse.

Related Topics

Frequently Asked Questions

References

1. American Academy of Orthopaedic Surgeons (OrthoInfo). Shoulder Impingement/Rotator Cuff Tendinitis.
2. Mayo Clinic. Rotator cuff injury — Symptoms and causes.
3. MedlinePlus, U.S. National Library of Medicine. Sports injuries.
4. National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS).