In addition, a frequent common feature of patients with congenital myopathies carrying recessive RYR1 mutations is the appearance of a number of skeletal abnormalities at birth, including scoliosis and congenital dislocation of the hip, kyphosis, clubfoot, flattening of the arch of the foot (or an abnormally high arch of the foot). Here, RYR1 is linked to congenital myopathy.