METHOD FOR TREATING THE CASES OF CONGENITAL ULNAR CLUBHAND AGGRAVATED BY ULNAR ARTICULATION ANKYLOSIS Russian patent published in 2004 - IPC

FIELD: medicine.

SUBSTANCE: method involves carrying out treatment in three stages. Ulnar bone rudiment is stretched, clubhand and all available deformities of the lower extremity are eliminated at the first stage. Humeral bone distraction in longitudinal direction is started at the fourth-fifth day at a rate of 1mm/day periodically making outward detorsion by applying appropriate rearrangement of rods to reach complete recovery of segment axis. Ulnar bone varus deformity is treated by applying asymmetric distraction. It results in ulnar bone rudiment elongation due to rudimentary band pull to the extent of defect size being applied. The hand is set in radial deflection hypercorrection position. The second stage involves stretching the ulnar bone rudiment to maximum extent with radial bone being concurrently stretched. Distraction is started at the fifth day in asymmetric mode. Ulnar bone lengthening is to be 2-2.5 times as much as that of the radial bone. The third stage starts with distraction carried out at a rate of 0.75 mm/day at proximal level. Asymmetric distraction is carried out at distal level. Recovery of intersegmental and intrasegmental proportions takes place in forearm. Transverse humeral corticotomy is applied at the first stage in the upper and lower one-third of the humerus. Ulnar and radial bone rudiment corticotomy is concurrently carried out. Humeral bone fragments distraction is carried out at a rate of 1 mm/day with outward detorsion being applied to reach segment normalization. The hand is set in radial deflection hypercorrection position. Ulnar bone rudiment is stretched with ulnar bone being concurrently stretched 2-2.5 times as much as it is done to the radial bone. Asymmetric distraction is carried out at the third stage in distal segment to achieve recovery of intersegmental proportions.

EFFECT: enhanced effectiveness in treating severe cases; restoring correct intersegmental and intrasegmental proportions.

6 dwg