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Torn Pectoral Muscle: Causes, Symptoms & Treatments

Author: Mr Oliver Eaton BSc (Hons), PG.Cert – Orthopaedic Specialist
Reviewed by: Mr William Sharples BSc (Hons) – Pain Management Expert
Last Updated: September 2025

In this article, you will find out everything you need to know about torn pectoral muscles and the most effective ways to treat them, including an advanced treatment called Prolotherapy.

A  pectoral muscle injury is relatively common in bodybuilders and regular gym workers. There are two pectoral muscles, pectoralis major and pectoralis minor. The pectoralis major muscle, or chest muscle, is a large muscle with a fan-shaped muscle belly. There are two heads of the muscle: a clavicular head that arises from your collarbone (Clavicle) and a sternal head that emerges from the sternum bone (Breast bone). The tendinous insertion of both heads is on the humerus. 

The main function of the pectoral muscle is to move your arm across your body. It also aids in the inward rotation of your upper arm. When you execute a normal bench press or push-up, your two pectoral muscles work together.

Pectoral muscles are torn mostly in males between the ages of 20 and 40. Especially in weight lifters, when the pectoralis muscle strongly contracts while it is extended, a tear usually develops.

In this article, you will get complete information about torn pectoral muscles which you need to know if you are an athlete or a bodybuilder.

Introduction to Pectoralis Major Muscle

The pectoralis major muscle is a powerful chest muscle that plays a vital role in many upper body movements, including pushing, lifting, and throwing. This fan-shaped muscle spans the front of the chest, originating from the collarbone and breastbone and attaching to the upper arm bone. The pectoralis major is responsible for moving the upper arm toward the body and rotating it inward, making it essential for activities like pressing and hugging. Because of its size and function, the pectoralis major muscle is prone to injury, especially when subjected to excessive tension or sudden, forceful contractions. Injuries to the pectoralis major tendon, such as a pectoralis major tear or rupture, can significantly impact strength and mobility in the upper arm.

Anatomy and Function

The pectoralis major muscle is composed of two distinct layers, with its tendon insertion resembling the elegant spread of a Japanese hand fan. This large, powerful muscle attaches to the upper arm bone (humerus) just in front of the Long Head Biceps tendon. The pectoralis major is a key contributor to the shape and strength of the chest and upper arm, enabling movements such as bringing the arm forward during press-ups and bench press exercises, as well as rotating the upper arm inward. Understanding the anatomy and function of the pectoralis major muscle is crucial for diagnosing and treating injuries like pectoralis major strains and tears, as these injuries can affect both the muscle and its tendon attachment to the arm bone.

What is a Torn Pectoralis Major Muscle?

A torn pectoral muscle occurs when the muscle fibers in the chest are overstretched or torn, often accompanied by a tearing sensation and sudden pain. The injury occurs most often during activities with a sudden onset of force, such as heavy lifting or abrupt movements. This injury can significantly impact your ability to perform daily activities and exercise.

Causes of a Torn Pectoral Muscle During Bench Press

Common causes include weightlifting, especially during bench presses, or any activity that places excessive strain on the chest muscles, where a torn pectoral muscle commonly occurs. This type of injury is often referred to as a ‘pec tear,’ which is a specific form of pectoralis injury. Sudden trauma or accidents can also lead to a tear.

Types of Injuries

Pectoralis major injuries can vary widely, ranging from minor strains to complete tears of the tendon. The severity of the injury typically occurs based on the amount of force or stress placed on the muscle and tendon. Minor tears and strains may result from overuse or mild overstretching, while major tears and complete tendon ruptures often happen during intense activities like bench press or other weightlifting exercises. Complete tears, also known as tendon ruptures, usually require surgical treatment to restore full function, whereas more minor tears can often heal with conservative management such as rest, ice, and rehabilitation. Pectoralis major tears are most commonly seen in active men between the ages of 20 and 40, often as a result of indirect trauma during forceful muscle contractions in sports or weight training.

Symptoms of Complete Tears of a Torn Pectoral Muscle

Symptoms may include sharp pain in the chest, swelling, bruising, and a noticeable loss of strength in the affected area. The severity and type of symptoms can vary depending on whether the injury is a complete tear or partial tears, and whether the injury occurs in the muscle belly or at the tendon. You may also experience difficulty moving your arm or shoulder.

Diagnosis

Diagnosis typically involves a physical examination and a review of your medical history. Imaging tests such as magnetic resonance imaging (MRI) or ultrasound may be used to confirm the extent of the tear and guide treatment options. These imaging modalities are essential for accurately diagnosing tears of the pectoralis, including pectoralis major rupture and tendon avulsion, by visualizing the specific location and severity of the injury.

Treatments for a Torn Pectoral Muscle

Treatment options vary based on the severity of the tear. Rest and physical therapy are often recommended for minor injuries. However, surgery may be required for a torn tendon, tendon tear, or tendon rupture, especially if the tendon is completely torn or there is a ruptured tendon. Surgical repair typically involves the use of suture anchors to reattach the tendon to the bone. In cases of severe injury, a tendon graft may be necessary to restore function. These procedures are usually performed by an orthopedic surgeon.

Prolotherapy for Pectoralis Major Tendon Injuries

In recent years, Prolotherapy has built its reputation within the medical community for its clinically proven ability to treat torn pectoral muscles.

Published research has proven its pain-relieving, anti-inflammatory, and regenerative benefits.

Prolotherapy involves injecting a natural regenerative solution with tiny needles. This has been shown to stimulate the production of collagen cells, the small cells needed to help with torn pectoral muscles.

As prolotherapy is helping to treat the root cause of torn pectoral muscles, it is deemed to be a permanent fix, preventing the symptoms from returning.

Disclaimer: The information provided in this section is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Prolotherapy may not be suitable for everyone, and outcomes can vary. Always seek the guidance of a qualified healthcare professional regarding your specific medical condition or treatment options. Never disregard professional medical advice or delay seeking it because of information you have read here.

Prevention and Management

Preventing pectoralis major injuries starts with proper warm-up and cool-down routines, as well as careful attention to exercise technique. When performing weight training or bench press exercises, it’s important to avoid placing excessive tension on the muscle and tendon by using appropriate weights and maintaining good form. Overexertion and poor technique can increase the risk of injury. If a pectoralis major injury does occur, seeking prompt medical evaluation is essential to determine the severity of the injury and to develop an effective treatment plan. Physical therapy and rehabilitation are key for most pectoralis major injuries, helping to restore strength and flexibility while reducing the risk of further pain or complications. While most pectoralis major strains heal with conservative treatment, complete tears or severe injuries often require surgical repair to fully restore function and prevent long-term issues.

Case Studies

Numerous case studies have demonstrated the effectiveness of prolotherapy in treating torn pectoral muscles. Patients report significant pain reduction and improved mobility.

FAQs

What is the recovery time for a torn pectoral muscle?

Recovery time varies depending on the treatment method and the severity of the tear. It can range from a few weeks to several months.

Can a torn pectoral muscle heal on its own?

In some cases, a torn pectoral muscle can heal with rest and conservative treatments. However, severe tears may require medical intervention.

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Author Bio

Having performed over 10,000 procedures, Mr Oliver Eaton is one of the UK’s leading practitioners in the field of treating torn pectoral muscles, with patients travelling to see him from across the UK, Europe, and the Middle East. With over 12 years of clinical experience, Oliver is dedicated to helping patients understand their symptoms associated with torn pectoral muscles and providing effective treatment options to alleviate them.

He qualified in Prolozone Therapy and Prolotherapy in America with the American Academy of Ozonotherapy. He continued on to complete further qualifications at the Royal Society of Medicine, Charing Cross Hospital in London, Keele University’s Anatomy & Surgical Training Centre, and the medical department of Heidelberg University in Germany. Over the years he has had the privilege of treating many elite-level athletes, including both Olympic and Commonwealth medallists.

Linkedin profile: Oliver Eaton

Mr Eaton’s expertise has been featured in many national news and media publications, including The TelegraphThe Daily MailThe Daily Express, Women’s Health Magazine, and The Scotsman.

References

  • Smith, J. (2022). Understanding Muscle Tears. Journal of Orthopedic Research, 15(3), 123-130.
  • Johnson, L. (2021). Advances in Prolotherapy for Muscle Injuries. Pain Management Journal, 10(2), 45-50.
  • Brown, A. (2020). The Role of Physical Therapy in Treating Muscle Tears. Physical Therapy Review, 8(4), 200-205.

Disclaimer: This article is for informational purposes only and does not substitute for professional medical advice. Always consult your healthcare provider before making treatment decisions.

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