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A torn bicep muscle is a strain or tear in the bicep muscle that can occur in the shoulder or elbow. The tear can be partial, where the soft tissue is damaged but the tendon is not completely severed, or complete, where the tendon is completely detached from its attachment point at the bone. Tears can occur suddenly or gradually, and are most common among people between the ages of 40 and 60. They are usually caused by normal wear and tear, but can be exacerbated by repetitive motion, and are common in people who participate in sports such as weightlifting, tennis, or swimming.
| Characteristics | Values |
|---|---|
| Location | The biceps muscle is located in the front of the upper arm, with tendons attaching it to the bones in the shoulder and elbow. |
| Function | The biceps muscle helps with bending and rotating the arm, specifically the motion of rotating the forearm from palm down to palm up (supination). |
| Types of Tears | Partial tears: damage the soft tissue but do not completely sever the tendon. Complete tears: the tendon completely detaches from its attachment point at the bone. |
| Grades | Grade 1: minor injury with overstretching but no loss of strength or mobility. Grade 2: moderate tearing with some loss of mobility or strength. Grade 3: complete rupture, may require surgery. |
| Causes | Constant overuse, acute injury (e.g., falling on an outstretched arm, lifting heavy objects), normal wear and tear, repetitive motion, diabetes, tobacco/nicotine use, anabolic steroid use, increased BMI, age, and heavy overhead activities. |
| Symptoms | Sudden pain in the upper arm, a "'popping'" sound, cramping, bruising, tenderness, reduced strength, difficulty rotating the forearm, and a bump on the upper arm. |
| Treatment | Nonsurgical treatments like rest, ice, medication, and physical therapy are often effective. Surgery may be considered for severe cases or when the patient requires full range of motion for their occupation or athletic activities. |
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What You'll Learn
Causes of a torn bicep muscle
A torn bicep muscle, or bicep rupture, is a tear or break in the tendon that connects the bicep muscle in the upper arm to the shoulder or elbow. The bicep muscle helps you bend and rotate your arm. Tears can be partial or complete. A partial tear damages the soft tissue but does not completely sever the tendon, whereas a complete tear will detach the tendon completely from its attachment point at the bone.
There are several causes of a torn bicep muscle. Firstly, a tear can be caused by injury, such as falling on an outstretched arm or lifting something heavy. This is particularly true for tears at the elbow, which usually occur when the elbow is pushed straight against a heavy weight. Tears at the elbow are uncommon, occurring in only 3 to 5 people per 100,000 each year, and are more common in men.
Secondly, a torn bicep muscle can be caused by overuse or repetitive motion, which can cause the tendons to wear down or fray over time. This is more common than a tear from an injury and occurs naturally as people age. Sports that require repetitive movements of the bicep in the shoulder or elbow can cause tears, such as weightlifting, tennis, or swimming.
Other causes of a torn bicep muscle include risk factors such as smoking, anabolic steroid use, increased BMI, diabetes, and the use of corticosteroid medications.
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Symptoms of a torn bicep muscle
A bicep tear, also known as a bicep rupture, is a strain or tear in the bicep muscle that can occur in the shoulder or elbow. The tear can be partial or complete. Partial tears damage the soft tissue but do not completely sever the tendon, whereas complete tears detach the tendon from the bone.
- A sudden burst of pain in the upper arm near the shoulder is the most common symptom.
- An audible "popping" or "snapping" sound as the tendon tears.
- Bruising, which may extend from the middle of the upper arm down to the elbow.
- Swelling and warmth around the upper arm.
- Weakness or difficulty rotating the forearm.
- A bulge in the upper arm above the elbow, with the muscle appearing closer to the elbow than it does on the other arm, known as "Popeye muscle" or "Popeye deformity".
- Loss of strength in the arm.
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Treatment options for a torn bicep muscle
Bicep tears can be partial or complete. Partial tears damage the soft tissue but do not completely sever the tendon, while complete tears detach the tendon from the bone. The biceps muscle has two tendons that attach it to the bones in the shoulder and one tendon that attaches at the elbow.
- Rest and avoiding heavy lifting or overhead activities to relieve pain and limit swelling.
- Using a sling for support.
- Nonsteroidal anti-inflammatory drugs (NSAIDs) like ibuprofen, aspirin, or naproxen to reduce pain and swelling.
- Ice packs to reduce swelling.
- Physical therapy or rehabilitation exercises to strengthen the muscles surrounding the biceps and restore movement and function.
However, some people may benefit from surgery, especially if their symptoms cannot be relieved by non-surgical treatments. Surgery is also recommended for athletes or people with occupations that demand a full range of motion in the shoulder. Surgical options include:
- Bicep tenodesis, which uses a screw to anchor the ruptured tendon to the bone.
- Acromioplasty and direct tenodesis, a procedure more commonly performed on younger patients with a history of prior shoulder injuries.
- Attaching the tendon to the bone with stitches through holes drilled in the bone.
- Using small metal implants (suture anchors or buttons) to attach the tendon to the bone.
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Risk factors for a torn bicep muscle
A torn bicep muscle, or biceps rupture, is a tear or break in the tendon that connects the biceps muscle in the upper arm to the shoulder or elbow. Tears can be partial or complete. A partial tear damages the soft tissue but does not completely sever the tendon, while a complete tear will detach the tendon completely from its attachment point at the bone.
There are several risk factors that can increase the likelihood of a torn bicep muscle. One of the main causes is injury, often due to a sudden fall or lifting a heavy weight. This can cause a forceful, eccentric contraction of the elbow, where the biceps muscle contracts but the elbow straightens, resulting in a lengthening of the muscle-tendon unit. Tears can also be the result of "acute-on-chronic injury," where the tendon has already experienced some level of pre-existing disease or degeneration.
Another risk factor is age. Older individuals, especially those between 40 and 60, have more wear and tear on their tendons. Constant overuse or repetitive motions can worsen this, especially in sports such as weightlifting, tennis, or swimming. Certain occupations that require heavy overhead lifting can also create excess wear and tear on the tendons.
Other risk factors include smoking, as nicotine use can weaken tendons and affect tendon strength and quality. Additionally, the use of corticosteroid and anabolic steroid medications has been linked to increased muscle and tendon weakness. Finally, having certain conditions such as diabetes, a high body mass index (BMI), or shoulder impingement can increase the risk of a torn bicep muscle.
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Diagnosis of a torn bicep muscle
To diagnose a torn bicep tendon, a doctor will first take a medical history. They will ask about your symptoms, any recent injuries, and when the pain began. They will then perform a physical examination to test your range of motion and strength. During these tests, they will check for pain or difficulty with certain movements, especially rotations. They will also look at your arm for swelling, bruising, or bulging.
A diagnosis of a distal biceps rupture can usually be made based on the patient's history and clinical examination. The physician will examine the patient to determine if there is a deformity, locate the site of injury, feel if the tendon is still intact, and assess for pain and weakness with elbow flexion and supination.
In addition to the physical examination, your doctor may recommend imaging tests to help confirm a diagnosis. X-rays can be useful in ruling out other problems that can cause elbow pain, although they cannot show soft tissues like the biceps tendon. An MRI scan can be used to determine whether the tear is partial or complete.
Biceps tendon tears can be either partial or complete. Partial tears do not completely detach the tendon from the bone, and some portion of the tendon remains intact. Complete tears, on the other hand, completely detach the tendon from the bone, and the tendon is no longer intact.
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Frequently asked questions
A bicep tear, also known as a bicep rupture, is a strain or tear in the bicep muscle that can occur in the shoulder or elbow. The tear can be partial, where the soft tissue is damaged but the tendon is not completely severed, or complete, where the tendon is completely detached from the bone.
Bicep tears are typically caused by two main factors: injury and overuse. Injuries can include falling on an outstretched arm or lifting something heavy. Overuse can cause tendons to wear down or fray over time, and this can be worsened by repetitive motions, especially in sports such as weightlifting, tennis, or swimming.
Common symptoms of a bicep tear include a sudden burst of pain in the upper arm near the shoulder, a "'popping'" sound as the tendon tears, and bruising at the elbow. There may also be a bump on the upper arm in the case of a complete tear.
A doctor can diagnose a bicep tear through a patient's medical history, physical examination, and diagnostic tests. During the physical examination, the doctor will assess the patient's range of motion, strength, and pain levels. Diagnostic tests such as X-rays or MRIs may be used to confirm the diagnosis and evaluate the severity of the injury.
Treatment options for a bicep tear depend on the severity of the injury and the patient's lifestyle. Nonsurgical treatments such as rest, ice, medication, and physical therapy are often effective for smaller tears or patients who can tolerate reduced arm strength. In more severe cases, surgery may be recommended to repair the torn tendon and restore full arm function.
