Sistema muscular
Contenido:
- Desordenes
- Tumores
Disorders of the Muscular System
Orofacial Myology Disorders: The orofacial myological disorders are a set of disorders that affect the muscles surrounding the face, jaw, lips and mouth. There are many different types of orofacial myological disorders like blocked nasal airways, dental malocclusions, speech problems, atypical swallowing and chewing patterns, abnormal posture of the orofacial musculature while resting, etc. The different causes of orofacial myological disorders could be as follows: imbalance in dental growth, obstructions or constrictions in the upper airway, low body tone, low-lying tongue resting posture, inadequate cranial and facial bone development, inadequate neck and head muscle development, etc. The treatment measures used for orofacial myological disorders include restoration of correct/proper swallowing patterns, re-education of muscle movement and establishment of adequate labial-lingual postures.
Atony: In this disorder, muscles lose their elasticity. Loss of elasticity and thereby, strength of muscles is the reason why atony is considered dangerous. This disorder of muscles is exhibited through different conditions (or probably symptoms) such atonic seizures, uterine atony and gastrointestinal atony. The atonic seizures are characterized by alterations caused in the brain for a temporary period which in turn is caused by lapse in the muscle tone. In gastrointestinal atony, muscles lose their propulsive ability. This condition is also described as decrease in motor activity of the gastrointesinal tract. In uterine atony, muscles of the uterus lose their tone. Contraction of uterine muscles is responsible for compression of blood vessels and thereby, the coagulation of blood. Loss of muscle tone hampers the process of blood coagulation and causes acute hemorrhage.
Myopathy: It is one of the many disorders of muscular system; it is characterized by muscle weakness which results from improper functioning of muscle fibers. The different muscle disorders like stiffness, muscle cramps and spasms could also be associated with myopathy. There are many types of myopathies and hence, the treatment for each of them is different. Treatment measures used for myopathy could be the ones which target a specific cause or those dealing with symptoms only. Physical therapy, drug therapy, acupuncture, surgery and bracing for support are amongst the treatment measures used for myopathy.
Pelvic Floor Muscle Disorder: In the pelvic floor muscle disorder, muscles that form the pelvic floor remain in a contracted/tightened position. Causes of the pelvic floor muscle disorder are not exactly known however, possible reasons behind tightening of muscles could be stress, trauma, etc. One might also suffer from problems such as frequent urination or pain in the pelvic region. Treatment measures used for pelvic floor muscle disorder include physical therapy, muscle relaxation, biofeedback and use of medications like Tamsulosin.
Diastasis Recti: It is a disorder where the rectus abdominis muscle, which is normally joined by the linea alba gets separated into left and right halves. This disorder mainly affects pregnant women and newborn babies. Complications such as development of ventral hernia or umbilical cord are treated by means of surgeries. In case of adults, it becomes important to perform surgeries in extreme cases; physiotherapy is used for disorders of a lesser degree/intensity.
Laminopathy: It is a genetic disorder in which mutations tend to occur in those genes which encode the proteins present in nuclear lamina. Along with muscular dystrophy, many other symptoms like dysplasia, diabetes and lipodystrophy are exhibited by people suffering from laminopathy. The treatment measures used for laminopathy are supportive and symptomatic. Those who suffer from muscular dystrophy are treated with the help of physical therapy.
Central Core Disease: It is a congenital myopathy, first described in 1956 by Shy and Magee. Symptoms of this disease are decreased muscle tone, weakness of facial muscles, hip dislocation, scoliosis, etc. There is no specific treatment for this disorder however, use of triggering anesthetics and muscle relaxants is avoided. Relatives of patients could be screened for the purpose of detecting mutations of RYR1 type.
Zenker's Degeneration: Various infectious diseases like typhoid fever, toxemia, etc. cause the degeneration of skeletal muscles; this condition is referred to as Zenker's degeneration. In this disorder, muscles become friable and pale, lose their cross striations, might rupture or exhibit a hyaline appearance.
Arthrogryposis: The arthrogryposis disorder, also known as Arthrogryposis Multiplex Congenita is characterized by joint contractures, fibrosis and muscle weakness.
Disorders of the muscular system are numerous and many underlying causes are behind them. The examples mentioned in the article are just a snapshot of various disorders of muscular system. Further research should help you understand more about these disorders.
Orofacial Myology Disorders: The orofacial myological disorders are a set of disorders that affect the muscles surrounding the face, jaw, lips and mouth. There are many different types of orofacial myological disorders like blocked nasal airways, dental malocclusions, speech problems, atypical swallowing and chewing patterns, abnormal posture of the orofacial musculature while resting, etc. The different causes of orofacial myological disorders could be as follows: imbalance in dental growth, obstructions or constrictions in the upper airway, low body tone, low-lying tongue resting posture, inadequate cranial and facial bone development, inadequate neck and head muscle development, etc. The treatment measures used for orofacial myological disorders include restoration of correct/proper swallowing patterns, re-education of muscle movement and establishment of adequate labial-lingual postures.
Atony: In this disorder, muscles lose their elasticity. Loss of elasticity and thereby, strength of muscles is the reason why atony is considered dangerous. This disorder of muscles is exhibited through different conditions (or probably symptoms) such atonic seizures, uterine atony and gastrointestinal atony. The atonic seizures are characterized by alterations caused in the brain for a temporary period which in turn is caused by lapse in the muscle tone. In gastrointestinal atony, muscles lose their propulsive ability. This condition is also described as decrease in motor activity of the gastrointesinal tract. In uterine atony, muscles of the uterus lose their tone. Contraction of uterine muscles is responsible for compression of blood vessels and thereby, the coagulation of blood. Loss of muscle tone hampers the process of blood coagulation and causes acute hemorrhage.
Myopathy: It is one of the many disorders of muscular system; it is characterized by muscle weakness which results from improper functioning of muscle fibers. The different muscle disorders like stiffness, muscle cramps and spasms could also be associated with myopathy. There are many types of myopathies and hence, the treatment for each of them is different. Treatment measures used for myopathy could be the ones which target a specific cause or those dealing with symptoms only. Physical therapy, drug therapy, acupuncture, surgery and bracing for support are amongst the treatment measures used for myopathy.
Pelvic Floor Muscle Disorder: In the pelvic floor muscle disorder, muscles that form the pelvic floor remain in a contracted/tightened position. Causes of the pelvic floor muscle disorder are not exactly known however, possible reasons behind tightening of muscles could be stress, trauma, etc. One might also suffer from problems such as frequent urination or pain in the pelvic region. Treatment measures used for pelvic floor muscle disorder include physical therapy, muscle relaxation, biofeedback and use of medications like Tamsulosin.
Diastasis Recti: It is a disorder where the rectus abdominis muscle, which is normally joined by the linea alba gets separated into left and right halves. This disorder mainly affects pregnant women and newborn babies. Complications such as development of ventral hernia or umbilical cord are treated by means of surgeries. In case of adults, it becomes important to perform surgeries in extreme cases; physiotherapy is used for disorders of a lesser degree/intensity.
Laminopathy: It is a genetic disorder in which mutations tend to occur in those genes which encode the proteins present in nuclear lamina. Along with muscular dystrophy, many other symptoms like dysplasia, diabetes and lipodystrophy are exhibited by people suffering from laminopathy. The treatment measures used for laminopathy are supportive and symptomatic. Those who suffer from muscular dystrophy are treated with the help of physical therapy.
Central Core Disease: It is a congenital myopathy, first described in 1956 by Shy and Magee. Symptoms of this disease are decreased muscle tone, weakness of facial muscles, hip dislocation, scoliosis, etc. There is no specific treatment for this disorder however, use of triggering anesthetics and muscle relaxants is avoided. Relatives of patients could be screened for the purpose of detecting mutations of RYR1 type.
Zenker's Degeneration: Various infectious diseases like typhoid fever, toxemia, etc. cause the degeneration of skeletal muscles; this condition is referred to as Zenker's degeneration. In this disorder, muscles become friable and pale, lose their cross striations, might rupture or exhibit a hyaline appearance.
Arthrogryposis: The arthrogryposis disorder, also known as Arthrogryposis Multiplex Congenita is characterized by joint contractures, fibrosis and muscle weakness.
Disorders of the muscular system are numerous and many underlying causes are behind them. The examples mentioned in the article are just a snapshot of various disorders of muscular system. Further research should help you understand more about these disorders.
Tumores
Rhabdomyosarcoma
Rhabdomyosarcoma is a type of cancer associated with the muscular system. The American Cancer Society says that rhabdomyosarcomas are malignant tumors found in skeletal muscle and that children have a higher risk of rhabdomyosarcomas than adults. Rhabdomyosarcomas often grow in a person's arms or legs, although they can also originate in the head and neck area, or in a person's reproductive and urinary organs. According to the cancer society, there are two principle types of rhabdomyosarcoma--embryonal and alveolar. Embryonal rhabdomyosarcoma, the most common type of rhabdomyosarcoma, typically affects infants and children and occurs in the head and neck region, bladder, vagina, prostate and testicles. Alveolar rhabdomyosarcoma is less common and typically affects older children and adolescents. It occurs most frequently in the trunk, arm and leg muscles.
Soft Tissue Sarcoma
Soft tissue sarcoma is a type of cancer that develops in muscles, tendons, fat, nerves and synovial tissues. According to the National Cancer Institute, soft tissue sarcomas include the diseases leiomyosarcoma (smooth muscle) and rhabdomyosarcoma (skeletal muscle). Leiomyosarcomas are found in the abdomen, uterus or pelvis. Rhabdomyosarcomas are found in striated muscles that can be located anywhere in the body.
