Inflammation of the tendon of the pectoralis major muscle

What is the pectoralis major muscle?

The pectoralis major muscle is a large powerful muscle at the front of the chest. It used to rotate the arm inwards, pull a horizontal arm across the body, pull the arm from above the head down and pull the arm from the side upwards. The tendon where it inserts into the arm (humerus) can become inflamed. It is common in racket players, rowers, swimmers, throwers and weight trainers.

Symptoms include:

• Pain at the front of the arm or shoulder where the muscle inserts.
• Pain when you try to bring your arm inwards and across your chest against resistance.
• Pain when you try to rotate you arm inwards against resistance.

What can the athlete do?

• Rest
• If it is very painful without having to touch or move it then the athlete should apply ice for the first 2 days. 20 minutes at a time 3 to 8 times a day.
• After the initial soreness has settled down, apply heat and use a heat retainer.
• See a sports injury professional who can advise on rehabilitation.

What can a sports injury specialist or doctor do?

• Prescribe anti-inflammatory medication such as ibuprofen.
• Use ultrasound or laser treatment.
• Prescribe a full rehabilitation programme.
• Use sports massage techniques.