It is caused by mutations in the SCN11A gene, in chromosome 3. It has been described in 13 and 10 members from two large Chinese families and 12 un-related patients. Transmission is autosomal dominant. == References ==
Distal clavicular osteolysis
Distal clavicular osteolysis (DCO) is often associated with problems weightlifters have with their acromioclavicular joints due to high mechanical stresses put on the clavicle as it meets with the acromion. This condition is often referred to as "weight lifters shoulder". Medical ultrasonography readily depicts resorption of the distal clavicle as irregular cortical erosions, whereas the acromion remains intact. Associated findings may include distended joint capsule, soft tissue swelling, and joint instability. A common surgery to treat recalcitrant DCO is resection of distal clavicle by removing a few millimetres of bone from the very end of the bone. See also
Osteolytic lesion
Biomineralization

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