Aplasia radii congenita

'Congenital underdevelopment of the spindle bone can be classified as atrophic congenital defects of the upper limbs.

Occurrence and clinical picture
Missing radius|thumb
 * occurs relatively rarely, bilateral aplasia in ½ cases
 * the ulna tends to be shorter, more strongly curved with a concavity more radially
 * the hand is in a severe varus position

Therapy

 * at an early age exercise
 * at the end of the 3rd year, the flexor et extensor carpi radialis can be lengthened
 * at the age of 8, operations are performed on the joints, corrective osteotomy of the ulna or longitudinal splitting of the distal end of the ulna with filling with bone grafts