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A muscle contusion, or a bruised muscle, is caused by a direct, blunt blow to the muscle. This can occur during contact sports, or by colliding with a hard surface or object. The impact crushes the muscle fibres and connective tissue beneath the skin, causing bleeding into the muscle, which leads to soreness and
| Characteristics | Values |
|---|---|
| Cause | Direct, blunt blow to the muscle |
| Other names | Muscle contusion, muscle bruise, pulled muscle |
| Symptoms | Pain, inflammation, swelling, bleeding beneath the skin, bruising, redness, possible broken bone or internal organ damage |
| Treatment | RICE method (rest, ice, compression, elevation), nonsteroidal anti-inflammatory drugs (NSAIDs), gentle stretching exercises, physical therapy |
| Complications | Compartment syndrome, myositis ossificans (bone formation in the injured muscle) |
| Prevention | N/A |
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What You'll Learn
Muscle contusion (bruise)
A muscle contusion, or bruise, is an injury that occurs when a part of the body receives a direct, blunt blow, causing trauma to the underlying muscle fibres and connective tissues without breaking the skin. This can happen during vigorous activities, such as sports, or even from a simple fall onto or against a hard surface.
Contusions can range from minor to severe. Minor contusions often heal quickly and do not significantly affect an athlete's performance or require them to stop playing. They can usually be managed with at-home care or simple treatment measures, such as non-steroidal anti-inflammatory drugs (NSAIDs) like ibuprofen, rest, ice, compression bandages, and elevation of the injured area.
However, severe contusions can cause deep tissue damage, leading to complications that may prevent an athlete from participating in sports for an extended period. In such cases, medical care and prompt treatment are necessary to avoid serious medical complications, such as compartment syndrome and myositis ossificans. Severe contusions may also result in broken bones, joint dislocation, torn muscles, sprains, and internal organ damage if the impact is to the abdomen.
Symptoms of a muscle contusion include swelling, pain, skin discoloration, muscle weakness and stiffness, and the formation of a lump due to pooled blood (hematoma). Diagnosis is made through a thorough physical examination, and additional diagnostic imaging tools like X-rays, ultrasound, MRI scans, or CT scans may be used to visualise the extent of the injury.
To treat a muscle contusion, it is important to first protect the injured area and stop any strenuous activity. Cold packs can be applied several times a day for 20-minute intervals to control pain, bleeding, and inflammation during the acute phase (first 24 to 48 hours). After a few days, gentle heat can be applied, and rehabilitation can begin under the guidance of a doctor or athletic trainer. In some cases, a customised protective device or padding may be recommended to prevent further injury upon returning to contact sports.
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Muscle strain
A muscle strain, or pulled muscle, is a common but painful injury. It occurs when the force on a muscle is so great that the tissue is damaged, resulting in a partial or complete tear. This commonly happens during excessive loading of the muscle, when the muscle is contracting while it is elongating. Muscles that cross two joints, such as the hamstrings, the calf, and the quadriceps, are the most susceptible to injury.
When a muscle is initially strained, significant inflammation and swelling occur. After this inflammatory phase, the muscle begins to heal by regenerating muscle fibers. However, a significant amount of scar tissue also forms where the muscle was injured. Over time, this scar tissue remodels, but sometimes the muscle tissue never fully regenerates, making the muscle more prone to future injuries.
The severity of a muscle strain can vary from minor to major. A mild strain might only break a few tiny fibers within the muscle, while a severe strain can tear through it completely. Most muscle strains can heal with time and rest, and at-home care is often enough to treat a pulled muscle. However, severe tears might require medical care or even surgery.
To diagnose a muscle strain, a healthcare provider will typically ask about the patient's history and perform a physical exam. They may gently feel the affected area for tenderness and test the muscle's strength and range of motion. In some cases, additional tests such as an MRI or X-ray, may be necessary to rule out other conditions or to determine the extent of the injury.
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Muscle inflammation and swelling
A direct, blunt blow to a muscle can cause a muscle contusion, or a bruised muscle. This occurs when the muscle fibres and connective tissue are crushed without breaking the skin, leading to broken blood vessels and bleeding into the affected muscle. This can result in muscle inflammation and swelling.
Muscle inflammation is referred to as myositis, which is an autoimmune disease that can cause muscles to become weak, tired, and painful. It can affect people of any age and is characterised by inflammation of the muscles, with the most common muscles affected being those around the shoulders, hips, and thighs. Myositis can also lead to other parts of the body being affected, such as the skin, lungs, or heart. In some cases, it may impact the muscles responsible for breathing and swallowing.
When a muscle is injured, it typically undergoes an inflammatory phase, leading to significant inflammation and swelling. This is followed by the regeneration of muscle fibres, although scar tissue formation also occurs at the site of injury. This scar tissue can increase the susceptibility of the muscle to future injuries.
To treat muscle inflammation and swelling, various methods can be employed, including massage, cold therapy, heat therapy, over-the-counter medications, and topical treatments. Massage can aid in reducing muscle tension and improving blood flow. Cold therapy, such as ice packs or cold baths, is recommended for recent injuries to reduce inflammation and swelling. On the other hand, heat therapy, including heat wraps or warm baths, is more suitable for older injuries as it helps relax muscles and improve blood flow. Over-the-counter medications, such as NSAIDs (nonsteroidal anti-inflammatory drugs) like aspirin and ibuprofen, can also help reduce inflammation and pain. Topical treatments containing ingredients like menthol, capsaicin, or lidocaine can numb the affected area to alleviate soreness.
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Muscle pain
Muscle strains, or "pulled muscles," are another common cause of muscle pain. They occur when the force on a muscle is too great, resulting in damage to the tissue. This can lead to a partial or complete tear of the muscle. Muscle strains commonly occur during excessive loading of the muscle, when it is contracting while elongating. Certain muscles, such as the hamstrings, calf, quadriceps, and hip adductors (groin strains), are more susceptible to strains. Factors that can increase the risk of muscle strains include older age, previous muscle injuries, reduced flexibility, muscle weakness, and fatigue. Starting a new sport or significantly increasing exercise intensity can also predispose individuals to muscle strains.
The treatment for muscle pain depends on the severity of the injury. Mild muscle bruises often respond well to at-home care using the RICE method: Rest, Ice, Compression, and Elevation. For the first 24 to 48 hours, it is crucial to rest the injured area, apply ice, use compression bandages, and elevate the injury above the heart level to control bleeding, swelling, and pain. Nonsteroidal anti-inflammatory drugs (NSAIDs), such as ibuprofen, can also be taken for pain relief.
However, more severe injuries may require medical attention. If there is no improvement within a few days or if symptoms worsen, it is important to seek medical advice. Complications from deep muscle contusions, such as compartment syndrome and myositis ossificans, can occur. Compartment syndrome is a medical emergency characterised by extremely painful swelling that can compromise blood flow and lead to tissue death. Myositis ossificans is a condition where bone forms within the injured muscle, reducing flexibility. Therefore, prompt medical treatment and proper rehabilitation are essential to avoid serious complications and ensure a safe return to activity.
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Compartment syndrome
The classic sign of acute compartment syndrome is severe pain, especially when the muscle within the compartment is stretched. This pain is more intense than what would be expected from the injury itself. Other symptoms include tingling or burning sensations, tightness or fullness in the muscle, and late-stage symptoms of numbness or paralysis, indicating permanent tissue damage. Chronic compartment syndrome causes pain or cramping during exercise, which subsides when the activity stops. It is most common in athletes under 30 and is associated with repetitive impact activities such as running, as well as overtraining.
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Frequently asked questions
A muscle contusion is a bruise in your muscle caused by a direct, blunt blow to your muscle. It is a painful injury that happens when a direct hit crushes your muscle fibres and connective tissue beneath your skin without breaking your skin open.
Symptoms of a muscle contusion include pain, bleeding or swelling beneath the skin, and soreness. In more severe cases, broken bones, dislocated joints, sprains, torn muscles, or other injuries may accompany a muscle contusion.
At-home care is usually enough to treat most muscle contusions. During the first 24 to 48 hours after injury, rest, ice, compression bandages, and elevation of the injured area can help control bleeding, swelling, and pain. In more severe cases, your doctor may recommend physical therapy to increase mobility.
Recovery time for a muscle contusion can range from a few days to a few weeks. While the injured muscle heals, it is important to keep exercising the uninjured parts of your body to maintain your overall fitness level.
