Biceps Tendon Rupture
A biceps tendon rupture is an injury that occurs to the biceps tendon causing the attachment to separate from the bone or the tendon to tear. A normal biceps tendon is connected strongly to the bone. When the biceps tendon ruptures, this tendon is detached. Following a biceps tendon rupture, the muscle cannot pull on the bone, and certain movements may be weakened and painful.
Cause & Symptoms
There are two main causes of biceps tendon tears: injury and overuse.
If you fall hard on an outstretched arm or lift something too heavy, you can tear your biceps tendon.
Many tears are the result of a wearing down and fraying of the tendon that occurs slowly over time. This naturally occurs as we age. It can be worsened by overuse – repeating the same shoulder motions again and again.
Overuse can cause a range of shoulder problems, including tendonitis, shoulder impingement, and rotator cuff injuries. Having any of these conditions puts more stress on the biceps tendon, making it more likely to weaken or tear.
Your risk for a tendon tear increases with:
Age. Older people have put more years of wear and tear on their tendons than younger people.
Heavy overhead activities. Too much load during weightlifting is a prime example of this risk, but many jobs require heavy overhead lifting and put excess wear and tear on the tendons.
Shoulder overuse. Repetitive overhead sports – such as swimming or tennis – can cause more tendon wear and tear.
Smoking. Nicotine use can affect nutrition in the tendon.
Corticosteroid medications. Using corticosteroids has been linked to increased muscle and tendon weakness.
Sudden, sharp pain in the upper arm
Sometimes an audible pop or snap
Cramping of the biceps muscle with strenuous use of the arm
Bruising from the middle of the upper arm down toward the elbow
Pain or tenderness at the shoulder and the elbow
Weakness in the shoulder and the elbow
Difficulty turning the arm palm up or palm down
Because a torn tendon can no longer keep the biceps muscle tight, a bulge in the upper arm above the elbow (“Popeye Muscle”) may appear, with a dent closer to the shoulder.
Medical History and Physical Examination
After discussing your symptoms and medical history, your doctor will examine your shoulder. The diagnosis is often obvious for complete ruptures because of the deformity of the arm muscle (“Popeye Muscle”).
A biceps tendon tear is made more obvious by contracting the muscle (“Popeye Muscle”).
Partial ruptures are less obvious. To diagnose a partial tear, your doctor may ask you to bend your arm and tighten the biceps muscle. Pain when you use your biceps muscle may mean there is a partial tear.
It is also very important that your doctor identify any other shoulder problems when planning your treatment. The biceps can also tear near the elbow, although this is less common. A tear near the elbow will cause a “gap” in the front of the elbow. Your doctor will check your arm for damage to this area.
In addition, rotator cuff injuries, impingement, and tendonitis are some conditions that may accompany a biceps tendon tear. Your doctor may order additional tests to help identify other problems in your shoulder.
X-rays. Although X-rays cannot show soft tissues like the biceps tendon, they can be useful in ruling out other problems that can cause shoulder and elbow pain.
Magnetic Resonance Imaging (MRI).
These scans create better images of soft tissues. They can show both partial and complete tears.
Great Lakes Physical Therapy
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