Overview
The pectoralis major is the large chest muscle that runs from your breastbone and collarbone to your upper arm bone. It is the main driver of pushing, bench-pressing, and sweeping the arm across the body. The muscle has two parts: an upper head from the collarbone and a lower head from the breastbone. Tears almost always happen where the tendon attaches to the upper arm bone.
The classic injury is the lowering phase of a heavy bench press, when the muscle is pulling hard while being stretched. Most patients feel a sudden pop. Weakness follows right away, with bruising that tracks into the armpit. Without repair, the muscle pulls back toward the chest wall. Push strength drops substantially and permanently. The chest also looks visibly uneven, with a bunched appearance on the torn side.
How the Procedure Works
We retrieve the pulled-back tendon through an incision at the front of the shoulder. We weave strong locking stitches through it, then reattach it to its original footprint on the upper arm bone. We prefer to anchor the tendon through small tunnels drilled in the bone, which gives the strongest hold. Suture anchors are the backup option when bone shape makes tunnels impractical. The key check during surgery is tension. The repaired tendon should lie flat against bone, and both sides of the chest should look symmetric. Timing matters too. Repair within the first few weeks after injury consistently restores strength better than waiting. Scar tissue and muscle shortening make later surgery harder and the results less predictable.
When to Consider Pectoralis Major Repair
We generally offer pec major repair when your symptoms, your imaging, and a full course of non-surgical care all point the same way. The typical picture includes:
Acute pec major rupture
A sudden tear, most often in a weight-training athlete. There is a gap you can feel and bruising in the armpit.
Chronic rupture with functional loss
An older tear with lasting weakness or a visible change in chest shape that you want addressed.
Risks & Why We Still Recommend It
Every operation carries risk. This procedure is offered because the condition, when left untreated, can cause lasting weakness in pressing and in sweeping the arm across the body, a visible change in chest shape, and a real strength deficit for heavy lifters and athletes. The decision to proceed weighs the risks of surgery against the limitations the condition places on daily function. Surgery does not remove risk; it addresses a problem that is otherwise progressive. Whether it is appropriate is determined for each patient in consultation with the surgeon.
The risks we discuss with patients before pectoralis major repair include:
- bleeding and infection
- anesthesia risk
- hematoma (this area tends to bleed and may require drainage)
- re-rupture, particularly with early heavy loading
- irritation from the hardware used to anchor the tendon
- residual asymmetry
- transient irritation of the brachial plexus (the bundle of nerves to the arm) from positioning during surgery
The reason to proceed is an acute pec major tear in someone whose pressing strength matters to them. If you do not need this operation, we will not recommend it.
Frequently Asked
questions we hear in clinicHow does the pectoralis major usually tear?
The classic injury is the lowering phase of a heavy bench press, when the muscle is pulling hard while being stretched. Most patients feel a sudden pop, with weakness right away and bruising that tracks into the armpit. Tears almost always happen where the tendon attaches to the upper arm bone.
What happens if I skip the repair?
Without repair, the muscle pulls back toward the chest wall. Push strength drops substantially and permanently, and the chest looks visibly uneven, with a bunched appearance on the torn side.
How is the tendon reattached?
We retrieve the pulled-back tendon through an incision at the front of the shoulder, weave strong locking stitches through it, and reattach it to its original footprint on the upper arm bone. Anchoring through small bone tunnels gives the strongest hold; suture anchors are the backup when bone shape makes tunnels impractical.
How soon should the repair happen?
Repair within the first few weeks after injury consistently restores strength better than waiting. Scar tissue and muscle shortening make later surgery harder and the results less predictable.
Can an older tear still be fixed?
Yes. A chronic rupture with lasting weakness or a visible change in chest shape that you want addressed is one of the situations where we offer this repair, though later surgery is harder and the results are less predictable than early repair.
Further Reading
Outside reading we trust, plus related OSI pages:
