When symptoms of amyotrophic lateral sclerosis (ALS), such as weakness and a loss of muscle mass, start in the limbs, doctors refer to the condition as limb onset ALS. ALS is a progressive condition ...

Skeletal limb abnormalities are structural issues in your arms or legs that can be present at birth (congenital) or develop after birth (acquired) due to injury or diseases like rickets or rheumatoid ...