Which physical findings are characteristic of arthrogryposis multiplex congenita (AMC)?

Updated: Jan 03, 2019
  • Author: Mithilesh K Lal, MD, MBBS, MRCP, FRCPCH, MRCPCH(UK); Chief Editor: Maria Descartes, MD  more...
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Answer

Although joint contractures and associated clinical manifestations vary from case to case, several characteristics are common, including the following:

  • Involved extremities are fusiform or cylindrical in shape, with thin subcutaneous tissue and absent skin creases

  • Deformities are usually symmetric, and severity increases distally, with the hands and feet typically the most deformed

  • Joint rigidity may be present

  • The patient may have joint dislocation, especially the hips and, occasionally, the knees

  • Atrophy may be present, and muscles or muscle groups may be absent

  • Sensation is usually intact, although deep tendon reflexes may be diminished or absent


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