What is it?

Arthrogryposis multiplex congenita (AMC) describes stiff or frozen joints caused by more than one contracture at birth. A contracture is a congenital anomaly that causes permanent tightening of your baby’s muscles, skin and tendons that make their joints short and stiff.

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Additional names

This group contains additional names:
- Arthrogryposis

Signs & symptoms

Most common symptoms of Arthrogryposis multiplex congenita include:
- A limited ability or inability to move small and large joints.
- Underdeveloped muscles.


Diagnosis of AMC can be done with ultrasound in routine tests during pregnancy. Your healthcare provider can diagnose AMC after your baby’s born by observing their symptoms and conduct further tests such as:
- Nerve conduction
- Electromyography (EMG)
- Muscle biopsy
- Genome sequencing


Treatment of AMC is aimed to improving your child's quality of life. it includes:
- Casts - to move stiff joints.
- Physical therapy - to improve joint motion.
- Surgery - to increase range of motion.

☝️ This is not a substitute for professional medical advice. Please consult with your physician before making any medical decision.

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