Arthrogryposis Multiplex Congenita
Also known as: AMC, Multiple Congenital Contractures
Arthrogryposis Multiplex Congenita (AMC) describes a condition characterized by multiple joint contractures present at birth. It is not a specific diagnosis but rather a descriptive term encompassing a variety of underlying conditions that limit fetal movement in the womb. These contractures can affect any joint but commonly involve the hands, wrists, elbows, shoulders, hips, knees, and feet. The severity and specific joints affected vary widely among individuals with AMC.
Imagine a baby born with stiff joints that don't bend easily. That's like Arthrogryposis. It happens when the baby doesn't move enough inside mommy's tummy. Doctors and therapists help them stretch and move so they can play and grow stronger.
Signs & Symptoms
- Multiple joint contractures
- Muscle weakness
- Fibrous or bony ankylosis
- Dislocated joints
- Dimpling of the skin over joints
- Absent or decreased joint creases
- Cylindrical limbs
- Limited range of motion
- Respiratory problems (in severe cases)
- Swallowing difficulties (in severe cases)
Treatment Options
Physical Therapy
HIGHLY EFFECTIVEOccupational Therapy
HIGHLY EFFECTIVESerial Casting
MODERATELY EFFECTIVESurgery (tendon release, osteotomy)
MODERATELY EFFECTIVEBracing and Splinting
SUPPORTIVERespiratory Support (if needed)
SUPPORTIVEFeeding Support (if needed)
SUPPORTIVEDiagnosis
- Physical examination
- Prenatal ultrasound
- Genetic testing (whole exome sequencing, chromosomal microarray)
- Muscle biopsy
- Neurological examination
- Imaging studies (X-rays, MRI)
History
Descriptions of congenital contractures date back to ancient times. However, the term 'Arthrogryposis Multiplex Congenita' was formally introduced in the medical literature in the 20th century to describe the constellation of findings associated with multiple congenital joint contractures.
Recent Breakthroughs
Identification of Novel Genes Associated with Distal Arthrogryposis
Recent research has identified new genes associated with distal arthrogryposis, expanding our understanding of the genetic basis of these conditions and improving diagnostic capabilities.
Advancements in Prenatal Diagnosis of Arthrogryposis
Improved prenatal diagnostic techniques, including advanced ultrasound and genetic testing, allow for earlier detection of arthrogryposis, enabling timely counseling and management planning.