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The Arthrochalasia Type of EDS is characterized by congenital hip dislocation which is present in all biochemically proven individuals with this type of EDS.
Severe generalized joint hypermobility with recurrent subluxations are seen in individuals with this type of EDS.
Other manifestations of this type may include
- Skin hyperextensibility with easy bruising
- Tissue fragility including atrophic scars
- Radiologically Mild Osteopenia.
The Arthrochalasia Type od EDS is caused by mutations leading to deficient processing of the amino-terminal end of proa1(I) [type A] or proa2(I)[type B] chains of collagen type I. It is inherited in an autosomal dominant manner. A skin biopsy can also diagnose this type of EDS.
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Lynn M. Sanders