PMC2815844_01
Arthrogryposis affecting the hips and knees. The baby had fixed hyperextended knees and fixed flexed hips. The trunk and upper extremities were not involved.
ymj-46-567-g001.jpg
PMC2815844_01_ymj-46-567-g001.jpg
F1
A physical examination upon admission demonstrated the following cylindrical contractures involving the lower extremities (Fig. 1, 2): (1) knees were fixed symmetrically in the hyperextended position with a range of motion (ROM) of 0 ; (2) hips were fixed in the flexed position by nearly 90  and limited in abduction with a ROM of 0-45 , and (3) thin subcutaneous tissues and absence of skin creases of the lower extremities.
Featureless lower extremities that are cylindrical with thin subcutaneous tissue and lack skin creases.
ymj-46-567-g002.jpg
PMC2815844_01_ymj-46-567-g002.jpg
F2
A physical examination upon admission demonstrated the following cylindrical contractures involving the lower extremities (Fig. 1, 2): (1) knees were fixed symmetrically in the hyperextended position with a range of motion (ROM) of 0 ; (2) hips were fixed in the flexed position by nearly 90  and limited in abduction with a ROM of 0-45 , and (3) thin subcutaneous tissues and absence of skin creases of the lower extremities.