Many of the conditions we saw were from congenital deformities from birth. There is no clear reason for these conditions—genetic, environmental and nutritional factors may all contribute. Some of what we saw included duplicate thumbs, clasp thumbs, constriction bands squeezing on tissue and inhibiting normal growth in the hands, and incomplete separation of fingers before birth. Another common injury is traction injuries from the birth process. These injuries cause partial or full paralysis of the arm.
Lam (pictured here) is gradually regaining the ability to move his arm, but is still unable to raise it completely.