
Full Answer
What is myositis ossificans and how is it treated?
What Is Myositis Ossificans and How Is It Treated? Is this common? Myositis ossificans (MO) occurs when bone or bone-like tissue grows where it’s not supposed to. It most commonly happens in your muscle after an injury — like when you get hit hard in the thigh during a soccer game or maybe after a car or bicycle accident.
What can I do to prevent myositis?
Physical therapy may also help prevent permanent muscle shortening. You may also want to add whirlpool baths, heat and gentle massage. Rest. Getting enough rest is an important component of managing myositis.
How common is myositis ossificans in muscle bruises?
However, myositis ossificans only occurs in 9-17% of muscle bruises. It is most common in the thigh muscles, which include the hamstrings and quadriceps, the muscles in the back and front of the thigh, respectively. Myositis ossificans can also occur in other muscles. Bony tissue formation can occur 2-4 weeks after the muscle injury or bruise.
How do I know if I have myositis ossificans?
If pain, range of motion, and strength have not begun to improve or get worse at a month after the injury, the cause could be myositis ossificans. In addition to pain, swelling or a hard bump are signs of myositis ossificans.

How long does it take for myositis ossificans to go away?
Recovery time can range between a few days to a few weeks. Though many cases of muscle bruising heal on their own, more severe muscle injuries may require medical attention. If your symptoms don't improve within a few days of developing the injury, see your doctor.
How do I break up myositis ossificans?
For all types of myositis ossificans, you may start with nonsurgical treatments, such as:Icing the bump.Limiting your activity to rest the area.Stretching gently.Taking nonsteroidal anti-inflammatory drugs (NSAIDs).Using an elastic bandage to decrease swelling.
Can you massage someone with myositis ossificans?
If you have or suspect you have myositis ossificans, you should not, under any circumstances, try to 'stretch out' the injury. Overstretching can aggravate the injury, cause more pain, more bone formation and prolong recovery. Deep massage over the injury should be avoided for the same reason.
Is massage good for myositis?
Physical therapy may also help prevent permanent muscle shortening. You may also want to add whirlpool baths, heat and gentle massage. Rest. Getting enough rest is an important component of managing myositis.
Can myositis ossificans grow?
The second condition, myositis ossificans progressiva (also referred to as fibrodysplasia ossificans progressiva) is an inherited affliction, autosomal dominant pattern, in which the ossification can occur without injury, and typically grows in a predictable pattern.
Can massage make inflammation worse?
Massage is like exercise: It forces blood into your muscles, bringing nutrients and removing toxins. This process can temporarily increase inflammation (the healing response) to areas that the body feels need attention. This inflammation can bring discomfort.
When should you not massage an injury?
Massage shouldn't be performed on the injured site because it encourages circulation and can increase swelling during the body's initial response to injury. 72 hours following an acute injury is when you should avoid getting massages.
Is myositis ossificans rare?
Myositis ossificans is a rare condition in which there is ossification in muscles (muscles turn to bone).
How long does myositis ossificans last?
The condition usually resolves with home care, though some people will have stiffness or discomfort for up to a year after the initial injury. It is important to rest after an injury and follow a treatment plan recommended by a doctor or physical therapist.
How long does it take for a bump to form in myositis ossificans?
Eventually, this can cause a hard lump or bump to develop within the muscle. This is a gradual process and begins within a few weeks after the initial injury. It can be hard to predict who will get myositis ossificans, but the condition is more prevalent in active young adults and athletes.
What is myositis ossificans?
Myositis ossificans: Symptoms and treatment. Myositis ossificans is a condition where bone tissue forms inside muscle or other soft tissue after an injury. It tends to develop in young adults and athletes who are more likely to experience traumatic injuries.
How long does it take for myositis to show up on an X-ray?
Most X-rays will not show up any abnormalities in the first 2–3 weeks following the injury but will show changes after 3–4 weeks.
Can a doctor order a biopsy of myositis ossificans?
A doctor may still order additional tests to compare and confirm a diagnosis. A biopsy of the growth may also be taken and evaluated in a lab. Sometimes, early diagnostic testing can confuse myositis ossificans with certain types of soft tissue cancers. As a result, the doctor may order additional testing to confirm the diagnosis.
Can paralyzed people develop myositis ossificans?
Also, people who are paralyzed from the waist down are more likely to develop myositis ossificans, even if they do not have a specific injury.
Can surgery be used for myositis ossificans?
If pain relievers, physical therapy, and other home care measures are not effective in treating myositis ossificans, surgical removal of the growth may be needed. Surgery is usually only used in cases with: severe pain. growths that interfere with nearby nerves, joints, or blood vessels.
Why is myositis ossificans complex?
The treatment of myositis ossificans is complex and is often made in a multidisciplinary fashion because accurate diagnosis is fundamental to a successful outcome. Myositis ossificans (MO), in its literal translation, implies an inflammatory ossification of muscle.
When to use an incisional biopsy?
Incisional biopsies may be used when image-guided biopsy is unavailable, after a core-needle biopsy when the diagnosis is uncertain, or when additional tissue is needed. Excisional biopsies are reserved for small, easily accessible lesions when imaging is consistent with a benign etiology.
What is the best imaging modality for soft tissue mass?
MRI is the best single modality for imaging soft-tissue masses. An MRI for the evaluation of a soft-tissue mass should be interpreted in conjunction with recent radiographs because calcifications may not be well demonstrated on MRI . 27 Recently, Papp et al 28 discussed the utility of MRI for diagnosing soft-tissue masses. They classified lesions as determinate or indeterminate based on imaging characteristics and clinical presentation. A determinate lesion can be definitively diagnosed by means of history and physical examination combined with appropriate imaging modalities such as MRI . A lesion in a characteristic location (eg, anterior femoral cortex) supports the diagnosis of MO and is, therefore, also an important consideration. By comparison, indeterminate lesions (eg, type of sarcoma) require biopsy for an accurate diagnosis. Because each physician’s experience guides him or her in classifying lesions as determinate or indeterminate, a thorough history and physical examination cannot be understated, and a multidisciplinary team approach is useful for optimizing diagnostic accuracy and minimizing risks associated with further evaluation, including biopsy. 29
What is the best test for soft tissue mass?
Ultrasonography. MRI is the preferred modality in the evaluation of a soft-tissue mass, but some patients may undergo ultrasonography as an initial diagnostic test. The principle value of ultrasonography is in differentiating between cystic and solid lesions.
Is myositis ossificans a soft tissue lesion?
Myositis ossificans is a self-limiting, benign ossifying lesion that can affect any type of soft tissue, including sub cutaneous fat, tendons, and nerves. It is most commonly found in muscle as a solitary lesion. Ossifying soft-tissue lesions historically have been inconsistently classified.
Is bone scintigraphy good for MO?
Bone scintigraphy is of little diagnostic value in the imaging workup of trauma-induced MO, especially when presenting as an isolated soft-tissue mass. However, a bone scan may be ordered when other inflammatory conditions, such as cellulitis, osteomyelitis, or thrombophlebitis, are considered. 24 A bone scan will demonstrate increased uptake in injured muscle because of the presence of calcium salts and is the most sensitive imaging modality for detecting heterotopic bone formation in the very early stages. 22,24 Several authors have found that three-phase bone scintigraphy is more useful in differentiating MO from other inflammatory conditions compared with a standard bone scan, which generally includes only delayed images. 22,24 Although serial bone scans have been suggested to aid in the timing of surgical intervention, the practical application of relying on bone scintigraphy to determine successful treatment is largely unfounded in this setting. 22,24 Because increased uptake on a bone scan can be seen chronically in trauma-induced MO, the authors have not found bone scans to be a reliable test for determining either the timing of surgical excision or for predicting the theoretic risk of recurrence ( Figure 5 ).
Is myositis ossificans a variable disease?
The etiology of myositis ossificans is variable; however, clinical presentation generally is characterized by an ossifying soft-tissue mass. Advanced cross-sectional imaging alone can be nonspecific and may appear to be similar to more sinister etiologies.
What is myositis ossificans?
In this condition, bone forms in muscle after an acute traumatic injury to the muscle or repetitive injury such as a muscle tear. Usually, this condition forms in sportspeople and are more common in contact sports. Generally, thigh muscles are most often affected although other muscle groups such as the calves or forearm muscles.
Causes
We don’t know the answer to that question. Most practitioners think the cells known as fibroblasts get confused and start laying down bone rather than scar tissue after a major injury. It seems that the more severe the injury, the more likely bone will form in muscle.
Diagnosis
Generally, bone formation starts at about 2-4 weeks after a muscle injury and can last for up to 6 months.
Myositis ossificans treatment
Once recognised, we suggest reducing training or sport. Then, we try simple treatments to reduce inflammation. These treatments include rest, ice, compression, and anti-inflammatory medication. Gentle stretching is allowed but deep massage should be avoided.
Frequently asked questions about myositis ossificans
Lumps can be due to other disorders such as abnormal growths or tumours. History of injury or trauma is important. If there is no history of trauma, then other possibilities need to be considered.
How long does it take for myositis ossificans to form?
Myositis ossificans can also occur in other muscles. Bony tissue formation can occur 2-4 weeks after the muscle injury or bruise. The athlete will often complain of pain in the muscle associated with exercise. Range of motion and strength of the limb may be compromised. A hard bump may also be felt in the muscle.
What is the procedure to check for myositis ossificans?
If there is suspicion of myositis ossificans, either an ultrasound or x-ray will be performed to assess for calcifications within the muscle. Sometimes, radiographs initially will be negative and, at a later date, show bone tissue. Serial imaging to follow the progression of the bone formation may be obtained at subsequent appointments.
How long does it take for a muscle to mature after calcification?
Additionally, not taking measures to reduce inflammation in the muscle after the initial injury also leads to in an increased risk of developing myositis ossificans. Calcification typically occurs 2-4 weeks after the initial muscle injury and the bone fully matures by 3-6 months.
What is myositis ossificans?
Myositis ossificans is a condition stemming from an injury that can occur in many types of sports. In this condition, bone tissue forms within a muscle. When a bruise (contusion), repetitive trauma, or strain occurs to a muscle, myositis ossificans can develop. However, myositis ossificans only occurs in 9-17% of muscle bruises.
How long does it take for a muscle to recover from a strain?
Persistent pain in previously injured muscle. While muscles can take months to get back to full strength following a strain or a bruise, typically, after 2-3 weeks there should be continued improvement in pain and performance. If pain, range of motion, and strength have not begun to improve or get worse at a month after the injury, the cause could be myositis ossificans. In addition to pain, swelling or a hard bump are signs of myositis ossificans.
What questions do sports medicine physicians ask?
The physician will ask about the athlete’s training program, initial treatment, and their rehabilitation program.
Can you stretch after a muscle injury?
Initially, after a muscle injury, aggressive stretching should be avoided, as this can increase bleeding or inflammation. Physical therapy may include light stretching, early strengthening of surrounding muscles, followed by working on the strength and flexibility of the injured muscle itself.
DESCRIPTION
Myositis ossificans (MO) occurs when bone or bone-like tissue grows where it’s not supposed to. It most commonly happens in your muscle after an injury — like when you get hit hard in the thigh during a soccer game or maybe after a car or bicycle accident.
CLASSIFICATION
In the first, and by far most common type, nonhereditary myositis ossificans, calcifications occur at the site of injured muscle, most commonly in the arms or in the quadriceps of the thighs. The term myositis ossificans traumatica is sometimes used when the condition is due to trauma.
CAUSES
Myositis ossificans usually occurs where a person has experienced a single traumatic injury, such as sustaining a hit while playing football or soccer that causes a deep muscle bruise.
SIGNS & SYMPTOMS
Unlike other typical muscle strains or injuries, people with myositis ossificans may notice that their pain worsens with time instead of getting better. Someone with this condition may also notice changes in the affected muscle, including:
DIAGNOSIS
If it has been at least 2–3 weeks since the pain or other symptoms started, the doctor may order some imaging tests to look for evidence of bone growth in the soft tissue. Your doctor may also order other imaging tests. These may include a diagnostic ultrasound, MRI, CT, or bone scan.
Treatment
Compression: Wrap an elastic bandage firmly around your injury to minimize swelling and keep the area stable. Elevation: Raise your injured limb above the level of your heart to help drain excess fluid from the area.
Questions?
We know you want what's best for your child. We're ready to assist you with your questions.
Request an appointment
Complete our online form and our team will reach out to you shortly to schedule an appointment.
How to treat myositis?
You may also want to add whirlpool baths, heat and gentle massage. Rest. Getting enough rest is an important component of managing myositis. Take frequent breaks during the day and limit your activity. Nutrition. What you eat can affect your overall health.
How to reduce stress in myositis patients?
It is imperative that myositis patients find outlets for the daily stress that most of us have in our lives. To that end, your doctor may suggest exercise as a form of relaxation, like yoga, or biofeedback exercises.
Is there a cure for myositis?
As of now, there is no cure for myositis. However, management of the disease is critical in order to reduce inflammation caused by myositis and to prevent muscle weakness from progressing. Further, your doctor will recommend lifestyle changes so you can restore your strength. There are two approaches to treatment for myositis: medical treatment.
