Arthrogryposis

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Arthrogryposis Classification and external resources
ICD-10	Q74.3
ICD-9	728.3, 728.3, 754.89
OMIM	108110 108120 208100 301830 601701 208200 108200 301830 208155 601680 108145 208085
DiseasesDB	31688 31816
eMedicine	ped/142
MeSH	D001176

Arthrogryposis, also known as Arthrogryposis Multiplex Congenita, is a rare congenital disorder that causes multiple joint contractures and is characterized by muscle weakness and fibrosis. It is a non-progressive disease. The disease derives its name from Greek, literally meaning 'curved or hooked joints'. ^{[1][2] [3] [4] [5] [6] [7] [8][7] [9] [10]}

There are many known subgroups of AMC, with differing signs, symptoms, causes etc.^[3]. In some cases, few joints may be affected and the range of motion may be nearly normal. In the most common type of arthrogryposis, hands, wrists, elbows, shoulders, hips, feet and knees are affected. In the most severe types, nearly every joint is involved, including the jaw and back.

Frequently, the contractures are accompanied by muscle weakness, which further limits movement. AMC is typically symmetrical and involves all four extremities with some variation seen.^[5][1]

Contents 1 Classification 2 Signs and symptoms 3 Causes 3.1 Extrinsic 3.2 Intrinsic 4 Diagnosis 5 Treatment 6 Prognosis 7 Epidemiology 8 Affected people 9 References 10 External links

[edit] Classification

Some of the different types of AMC include:

• Arthrogryposis multiplex due to muscular dystrophy.^[11][12]
• Arthrogryposis ectodermal dysplasia other anomalies, also known as Cote Adamopoulos Pantelakis syndrome, Trichooculodermovertebral syndrome, TODV syndrome and Alves syndrome.^[13][14]
• Arthrogryposis epileptic seizures migrational brain disorder.^[15]
• Arthrogryposis IUGR thoracic dystrophy,also known as Van Bervliet syndrome.^[16][17]
• Arthrogryposis like disorder, also known as Kuskokwim disease.^[18]
• Arthrogryposis-like hand anomaly and sensorineural deafness.^[19][20]
• Arthrogryposis multiplex congenita CNS calcification.^[21]
• Arthrogryposis multiplex congenita distal (AMCD)^[22], with a large number of synonyms such as Arthrogryposis multiplex congenita, distal, x-linked (AMCX1)^[23][24] and Arthrogryposis spinal muscular atrophy^[25][26][27]
• Gordon Syndrome, also known as Distal Arthrogryposis, Type 2A.^[28]
• Arthrogryposis multiplex congenita, distal type 2B, also known as Freeman-Sheldon syndrome variant.^[29]
• Arthrogryposis multiplex congenita neurogenic type (AMCN).^[30] This particular type of AMC has been linked to the AMCN gene on locus 5q35.^[31][32] Its mode of inheritance follows the Autosomal recessive patern.^[33]
• Arthrogryposis multiplex congenita pulmonary hypoplasia, also with a large number of synonyms.^[34][35]
• Arthrogryposis multiplex congenita whistling face, also known as Illum syndrome.^{[36][37][38][39]}
• Arthrogryposis multiplex congenita, distal type 1 (AMCD1).^[40]
• Arthrogryposis ophthalmoplegia retinopathy, also known as Oculomelic amyoplasia.^[41][42][43]
• Arthrogryposis renal dysfunction cholestasis syndrome, also known as ARC Syndrome.^[44][45]

[edit] Signs and symptoms

There are numerous symptoms for this group of diseases.^[4] Some of the more common signs and symptoms are associated with the shoulder (internal rotation deformity), elbow (extension and pronation deformity), wrist (volar and ulnar deformity), hand (fingers in fixed flexion and thumb-in-palm deformity), hip (flexed, abducted and externally rotated, often dislocated), knee (flexion deformity) and foot (clubfoot deformity).^[8] Complications may include scoliosis, lung hypoplasia leading to respiratory problems, growth retardation, midfacial hemangioma, facial and jaw deformities, respiratory problems, and abdominal hernias. Cognition and speech are usually normal.^[5]

[edit] Causes

The cause is unknown^[7], although several mechanisms have been suggested. This includes hyperthermia of the fetus, prenatal virus, fetal vascular compromise, septum of the uterus, decreased amniotic fluid, muscle and connective tissue developmental abnormalities. ^[5][6] In general, the causes can be classified into extrinsic and intrinsic factors.

[edit] Extrinsic

• There is insufficient room in the uterus for normal movement. For example, fetal crowding; the mother may lack a normal amount of amniotic fluid or have an abnormally shaped uterus.^[3][9]

[edit] Intrinsic

• Musculoskeletal/Neuromuscular - Muscles do not develop properly (atrophy). In most cases, the specific cause for muscular atrophy cannot be identified. Suspected causes include muscle diseases (for example, congenital muscular dystrophies), maternal fever during pregnancy, and viruses, which may damage cells that transmit nerve impulses to the muscles.
• Neurological - Central nervous system and spinal cord are malformed. In these cases, a wide range of other conditions usually accompanies arthrogryposis. ^[6]
• Connective Tissue - Tendons, bones, joints or joint linings may develop abnormally. For example, tendons may not be connected to the proper place in a joint.^[3][9]

Research has shown that anything that prevents normal joint movement before birth can result in joint contractures. The joint itself may be normal. However, when a joint is not moved for a period of time, extra connective tissue tends to grow around it, fixing it in position. Lack of joint movement also means that tendons connecting to the joint are not stretched to their normal length; short tendons, in turn, make normal joint movement difficult. (This same kind of problem can develop after birth in joints that are immobilized for long periods of time in casts.)

The principal cause of AMC is believed to be decreased fetal movements (akinesia) caused by maternal or fetal abnormalities. It is associated with neurogenic and myopathic disorders. It is believed that the neuropathic form of AMC involves a deterioration in the anterior horn cell leading to muscle weakness and fibrosis. ^[46]

In most cases, arthrogryposis is not a genetic condition and does not occur more than once in a family. In about 30% of the cases, a genetic cause can be identified. The risk of recurrence for these cases varies with the type of genetic disorder.^[4]There is a rare autosomal recessive form of the disease known to exist ^[7]

[edit] Diagnosis

To date, no prenatal diagnostic tools are available to test for the condition. Diagnosis is only used to rule out other causes. This is done by undertaking muscle biopsies, blood tests and general clinical findings rule out other disorders and provides evidence for AMC.^[5]

[edit] Treatment

While there is no cure, symptoms and deformities may still be alleviated with various methods due to multiple contractures and weakness. Physical therapy intervention including stretching (may include casting and splinting program of affected joints), strengthening, mobility training, are undertaken to improve flexion and range of motion. Occupational therapy interventions can include training in ADL and fine motor skills as well as addressing psychosocial and emotional implications of a chronic condition. Since there is a variety of different deformities, individually tailored orthopaedic correction is needed. Orthopedic surgery is usually needed to correct severely affected joints and limbs and symptoms such as clubfoot, hernia repair and correction if unilateral hip dislocation occurs.

[edit] Prognosis

Individuals with AMC require vigorous therapy and surgical intervention. This however depends on severity.^[5] Since AMC is not a progressive disorder though, there are also positive factors as well including normal cognition and speech and a potential for functional mobility leading to a productive and independent lifestyle, adapting to specific situations as required by the individuals particular symptom.

[edit] Epidemiology

AMC is relatively rare occurring in 1 out of every 3,000 live births.^[5][8] Amyoplasia, characterized by fatty and fibrous tissue replacement of the limb muscles, is the most common form, at 43% of reported cases.^[47] The majority of affected individuals survive but a minority die, usually due to respiratory muscle involvement.

[edit] Affected people

• Asta Philpot, an American born man living in England, who was the protagonist of a BBC documentary about prostitution as a mean of offering the chance sexual experiences to people with disabilities.

• Celestine Tate Harrington, a quadriplegic street musician who performed at the Atlantic City Boardwalk and author of the 1996 book, "Some Crawl and Never Walk."

• Josh Twelves, an actor and comedian based out of Utah.

• Greg Burns, an artist in Oklahoma City who makes pen-and-ink drawings using a pen in his hand, and colors them with watercolors using a brush in his mouth.

[edit] References

[edit] External links

• AMC Convention 3rd Annual Arthrogryposis Convention Columbus Ohio July 17-20 2008
• AMC Support, National Support Group for people and families touched by AMC
• Online Discussion Group for anyone touch by AMC
• Live Chats for anyone touched by AMC First Thursday of Every Month- June 5, July 3, August 7
• Women for AMC Awareness
• First-degree Black Belt & Fitness Trainer with disorder by Brian Stone
• Dancer with the disorder
• E-mail discussion group for adults with amc
• Living life to the fullest with arthrogryposis

v • d • e Diseases of the musculoskeletal system and connective tissue (M, 710-739) Arthropathies Arthritis (Septic arthritis, Reactive arthritis, Rheumatoid arthritis, Psoriatic arthritis, Felty's syndrome, Juvenile idiopathic arthritis, Still's disease) - crystal (Gout, Chondrocalcinosis) - Osteoarthritis (Heberden's node, Bouchard's nodes) acquired deformities of fingers and toes (Boutonniere deformity, Bunion, Hallux rigidus, Hallux varus, Hammer toe, Swan neck deformity) - other acquired deformities of limbs (Valgus deformity, Varus deformity, Wrist drop, Foot drop, Flat feet, Club foot, Unequal leg length, Winged scapula) patella (Luxating patella, Chondromalacia patellae) Protrusio acetabuli - Hemarthrosis - Arthralgia - Osteophyte Systemic CT disorders vasculitis: Churg-Strauss syndrome - Kawasaki disease - Hypersensitivity vasculitis - Wegener's granulomatosis - Arteritis (Polyarteritis nodosa, Takayasu's arteritis, Temporal arteritis) immune/autoimmune: Goodpasture's syndrome - Microscopic polyangiitis - Systemic lupus erythematosus (Drug-induced) - Dermatomyositis (Juvenile dermatomyositis) - Polymyositis - Scleroderma - Sjögren's syndrome - Behçet's disease - Polymyalgia rheumatica - Eosinophilic fasciitis Hypermobility Dorsopathies spinal curvature (Kyphosis, Lordosis, Scoliosis) - Scheuermann's disease - Spondylolysis - Torticollis - Spondylolisthesis Spondylopathies (Ankylosing spondylitis, Spondylosis, Spinal stenosis) - Schmorl's nodes - Degenerative disc disease - Coccydynia - Back pain (Radiculopathy, Neck pain, Sciatica, Low back pain) Soft tissue disorders muscle: Myositis (Pyomyositis) - Myositis ossificans (Fibrodysplasia ossificans progressiva) synovium and tendon: Synovitis/Tenosynovitis (Calcific tendinitis, Stenosing tenosynovitis, Trigger finger, DeQuervain's syndrome) - Irritable hip - Ganglion cyst bursa: bursitis (Olecranon, Prepatellar, Trochanteric) - Baker's cyst fibroblastic disorders: Dupuytren's contracture - Fasciitis (Plantar fasciitis, Nodular fasciitis, Necrotizing fasciitis) - Fibromatosis shoulder lesions: Adhesive capsulitis - Rotator cuff tear - Subacromial bursitis enthesis: enthesopathies (Iliotibial band syndrome, Achilles tendinitis, Patellar tendinitis, Golfer's elbow, Tennis elbow, Metatarsalgia, Bone spur, Tendinitis) other, NEC: Muscle weakness - Rheumatism - Myalgia - Neuralgia - Neuritis - Panniculitis - Fibromyalgia Osteopathies disorders of bone density and structure: Osteoporosis - Osteomalacia - continuity of bone (Pseudarthrosis, Stress fracture) - Monostotic fibrous dysplasia - Skeletal fluorosis - Aneurysmal bone cyst - Hyperostosis - Osteosclerosis Osteomyelitis - Avascular necrosis - Paget's disease of bone - Algoneurodystrophy - Osteolysis - Infantile cortical hyperostosis Chondropathies Juvenile osteochondrosis (Legg-Calvé-Perthes syndrome, Osgood-Schlatter disease, Köhler disease, Sever's disease) - Osteochondritis - Tietze's syndrome - Relapsing polychondritis See also congenital conditions (Q65-Q79, 754-756)

v • d • e Congenital malformations and deformations of musculoskeletal system / musculoskeletal abnormality (Q65-Q79, 754-756) Congenital limb deformities Upper limbs Cleidocranial dysostosis - Madelung's deformity - Sprengel's deformity - Wallis Zieff Goldblatt syndrome Lower limbs hip: Dislocation of hip/Hip dysplasia - Upington disease knee: Genu valgum - Genu varum feet: Club foot - Flat feet - Pes cavus Upper and/or lower limbs dactyly: Polydactyly/Syndactyly (Webbed toes) - Arachnodactyly - Cenani Lenz syndactylism reduction deficits: Acheiropodia - Amelia - Ectrodactyly - Phocomelia multiple joints: Arthrogryposis - Larsen syndrome - Rapadilino syndrome Craniofacial abnormalities Macrocephaly - Platybasia Craniosynostosis: Scaphocephaly - Oxycephaly - Trigonocephaly Craniofacial dysostosis: Crouzon syndrome - Hypertelorism - Hallermann-Streiff syndrome - Treacher Collins syndrome Craniodiaphyseal dysplasia Dolichocephaly - Greig cephalopolysyndactyly syndrome - Plagiocephaly Other axial skeleton spine: spinal curvature (Scoliosis) - Klippel-Feil syndrome - Spondylolisthesis ribs: Cervical rib - Bifid rib sternum: Pectus excavatum - Pectus carinatum Osteochondrodysplasia development of cartilage, tubular bones and spine: Achondrogenesis/Hypochondrogenesis - Boomerang dysplasia - Thanatophoric dysplasia - Short rib-polydactyly syndrome - Chondrodysplasia punctata (Rhizomelic chondrodysplasia punctata, Conradi-Hünermann syndrome) - Achondroplasia (Hypochondroplasia) - Osteosclerosis (Raine syndrome) - Ellis-van Creveld syndrome - Otospondylomegaepiphyseal dysplasia - Spondyloepiphyseal dysplasia congenita collagen diseases: Osteogenesis imperfecta - Ehlers-Danlos syndrome other: McCune-Albright syndrome - Osteopetrosis - Metaphyseal dysplasia - Recessive multiple epiphyseal dysplasia - Hereditary multiple exostoses - Osteopoikilosis - Chondrodystrophy - Osteodystrophy - Atelosteogenesis, type II - Diastrophic dysplasia - Camurati-Engelmann disease Other abdominal wall (Congenital diaphragmatic hernia, Omphalocele, Gastroschisis, Prune belly syndrome) See also non-congenital conditions (M, 710-739)