Myositis ossificans - causes, symptoms, investigation, treatment, prognosis
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- Опубликовано: 11 сен 2024
- Myositis ossificans is a condition where bone tissue forms inside muscle or other soft tissues after an injury. It usually occurs in response to a single traumatic event or repeated trauma, such as in athletes who sustain repetitive muscle injuries. Here’s an overview:
Causes and Risk Factors
- **Trauma**: Direct impact or muscle strain can lead to the development of myositis ossificans.
- **Surgical Procedures**: Rarely, surgery can provoke the condition.
- **Genetic Factors**: Some individuals may have a predisposition to developing this condition.
Symptoms
- **Pain**: The affected area becomes painful, especially with movement.
- **Swelling**: There is often noticeable swelling in the region.
- **Stiffness**: Reduced range of motion in the nearby joints.
- **Palpable Mass**: A hard, bony lump may be felt in the muscle.
Diagnosis
- **Medical History and Physical Examination**: Important to understand the timeline and nature of the injury.
- **Imaging**:
- **X-rays**: Show calcification in the soft tissue typically a few weeks after the injury.
- **Ultrasound**: Can help in early detection before calcification is visible on X-rays.
- **MRI**: Useful for assessing the extent of the lesion and ruling out other conditions.
Treatment
- **Rest and Immobilization**: Reducing activity to allow the muscle to heal.
- **Physical Therapy**: To maintain range of motion and prevent joint stiffness.
- **Pain Management**: NSAIDs and other pain relief methods.
- **Surgery**: In severe cases where the bone growth impairs function, surgical removal may be necessary. However, surgery is typically delayed until the bone formation stabilizes.
Prognosis
- Most cases of myositis ossificans improve with conservative treatment.
- Surgical outcomes are generally good if intervention becomes necessary.
Prevention
- **Proper Warm-up and Stretching**: Before engaging in physical activities.
- **Protective Gear**: Using appropriate protection in sports to minimize injury.
- **Gradual Increase in Activity**: To prevent overuse injuries.
Differential Diagnosis
- **Heterotopic Ossification**: Often seen after joint replacement or neurological injuries.
- **Soft Tissue Tumors**: Conditions like osteosarcoma or other malignancies.
- **Infectious Myositis**: Inflammation due to infection rather than trauma.
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