Logan Steele
Muscle dysfunction, or muscle disorders, refer to diseases and disorders that affect the human muscle system. The most common symptom of muscle dysfunction is muscle weakness, which occurs when full effort does not produce a normal muscle contraction or movement. This can be caused by a variety of factors, including chronic conditions, infections, or even a tough workout. Treatment for muscle dysfunction depends on the underlying cause and severity of symptoms, but can include physical therapy, medication, and surgery.
| Characteristics | Values |
|---|---|
| Diagnosis | Electromyography (EMG), nerve conduction studies, musculoskeletal MRI, needle biopsy, muscle ultrasound |
| Treatment | Corticosteroids, immunosuppressants, surgery, physical therapy, exercise, assistive devices, pain relievers, thyroid hormone replacement, diet changes, mobility assistance, support groups, medicine (e.g. steroids, ACE inhibitors, beta blockers) |
| Symptoms | Muscle weakness, muscle stiffness, body aches, clumsiness, falling, breathing issues, trouble walking and using arms, muscle contractions, muscle spasms, inflammation |
| Causes | Multiple sclerosis, ALS, neuromuscular disorders, autoimmune diseases, spinal cord injuries, infections, chronic conditions, diseases (e.g. Addison's disease, anemia, diabetes, fibromyalgia), genetic factors |
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What You'll Learn
Physical therapy
The foundation of physical therapy treatment for muscle weakness is progressive strengthening exercises, which are designed to increase muscle strength and improve balance and stability. These exercises target the large muscle groups, such as the legs, and focus on increasing muscle mass and improving mobility. Therapists may also recommend stretching and range-of-motion exercises to prevent muscle stiffness and improve flexibility.
In addition to in-clinic treatments, patients are often given a home exercise program (HEP) to complement their clinic work and help maintain results. As patients become stronger, the intensity of the program is gradually increased to help them reach their goals and improve their overall activity and mobility.
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Drug therapy
Drugs that are known to cause muscle dysfunction include statins, fibrates, antiretrovirals, antiarrhythmic medicines, corticosteroids, antiepileptic drugs, and omeprazole. It is important to discuss the risks and benefits of any medication with a doctor, as drug-induced myopathies are often reversible if caught early.
When it comes to using drug therapy to treat muscle dysfunction, there are a few options available. One approach is to use muscle relaxers, which can be prescribed or over-the-counter medications. These include antispasmodics, which treat muscle spasms, and antispastics, which treat muscle spasticity. Benzodiazepines are an example of a sedative muscle relaxer that works by increasing the effects of certain neurotransmitters. However, they can have side effects such as drowsiness and can be habit-forming. Other prescription medications for muscle spasms include baclofen, dantrolene, and diazepam.
In terms of drug therapy for muscle wasting diseases such as sarcopenia and cachexia, there are a few candidate drugs available or in development. These include ghrelin agonists, selective androgen receptor molecules, megestrol acetate, activin receptor antagonists, espindolol, and fast skeletal muscle troponin inhibitors. Megestrol acetate, for example, has been shown to improve appetite and lean body mass in cancer and AIDS patients. Other drugs such as tirasemtiv and CK-2127107 are being studied for their potential to improve muscle function in people with amyotrophic lateral sclerosis (ALS). Additionally, drugs that enhance mitochondrial function, such as Bendavia, have shown promise in restoring skeletal muscle fiber type in dogs with heart failure.
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Surgery
For muscle tears, surgery can be a feasible alternative to avoid early and late complications and improve functional results. Surgical intervention can also be used to remove persistent calcium deposits in the case of muscle injuries. In the case of muscle tears, there are a variety of suturing techniques that can be used, although there is no consensus on which is the best. To minimize problems with muscle repair and improve healing, the employment of scaffolds has been proposed as a biological augmentation.
Soft tissue release surgery is a procedure used to treat muscular dystrophy, which involves making an incision in the affected muscles, tendons, or ligaments to release them from the joints, improving mobility and comfort. This surgery is often performed on children's Achilles tendons, which, due to their thick and inflexible fibres, can require cutting to allow for a thorough repositioning of the foot. Following surgery, a cast is worn for three weeks, after which the tendon has healed and allows for a greater range of motion.
Spinal fusion surgery is another procedure used to treat scoliosis, a condition that causes an abnormal curve in the spine and can lead to disability. This surgery straightens and stabilizes the vertebrae using rods, screws, wires, and bone grafts, with new bone eventually growing over the graft. This procedure can also help preserve lung function.
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Heart care
Muscle dysfunction can be caused by a variety of factors, including injury, disease, or disorders that affect the brain, nervous system, or muscles themselves. While short-term muscle weakness may be caused by something as simple as a tough workout, persistent muscle weakness could indicate an underlying health condition.
Cardiomyopathy is a condition that affects the heart muscle, causing the heart to become enlarged, stiff, or thickened, and potentially leading to heart failure. Treatment for cardiomyopathy focuses on managing symptoms and slowing the progression of the disease to improve the patient's quality of life. While there is no cure for cardiomyopathy, various treatments can help. These include:
- Medication: Mavacamten, for example, can be prescribed to relax the heart muscle and improve symptoms in patients with hypertrophic cardiomyopathy. Other medications such as ACE inhibitors, ARBs, beta-blockers, and diuretics are also commonly used to treat heart failure.
- Lifestyle changes: Adopting a healthy lifestyle, including a balanced diet with low fat and salt, maintaining a healthy weight, and exercising can help manage symptoms and reduce the risk of serious illness.
- Devices: In some cases, devices such as a pulmonary artery pressure sensor or a pacemaker may be implanted to monitor and control heart functions.
- Surgery: For severe cases of cardiomyopathy, a heart transplant may be necessary to improve quality of life and prolong lifespan.
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Speech therapy
Muscle dysfunction can be caused by a variety of factors, including disease, injury, or even a tough workout. Treatment options depend on the underlying cause and severity of symptoms. For example, those with MS or ALS may benefit from physical therapy and progressive resistive exercises to improve muscle strength.
Oral Myofunctional Therapy (OMT) is a type of speech therapy that specifically targets the tongue and facial muscles. The tongue's resting position can impact basic oral functions, such as eating, swallowing, and speech. OMT involves tailored exercises to improve the strength and function of the mouth, tongue, and facial muscles. It is often recommended for conditions such as mouth breathing and sleep apnea.
Speech pathologists may also use articulation treatment in combination with oral motor exercises to improve speech clarity. This may include teaching patients to sustain certain consonants, improve pitch, timing, and loudness, and practice breathing control exercises. Additionally, techniques such as Chant Speak, Yawn/Sigh, and Confidential Voice are used to reduce vocal tension and improve vocal quality.
Resonant Voice Therapy is another approach used in speech therapy to treat muscle tension dysphonia. This therapy aims to help individuals produce a strong, clear voice with minimal vocal effort. Expiratory Muscle Strength Training (EMST) is also employed for patients with weak coughs or those at risk for aspiration, including individuals with Parkinson's disease.
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Frequently asked questions
Most cases of muscle stiffness can be treated with home remedies. However, if you are experiencing muscle dysfunction, it is best to seek advice from a medical professional.
Over-the-counter (OTC) pain relievers, such as ibuprofen or acetaminophen, can help manage pain associated with muscle dysfunction.
Physical therapists can suggest exercises to improve your quality of life. For example, a physical therapist might suggest progressive resistive exercise to help strengthen muscles that have become weak from lack of use.
