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- W2389759318 abstract "Objective To investigate the effect of the loss of ulna coronoid process height in different parts on the stability of elbow joint after radial head excision for radial head comminuted fracture complicated with coronoid process fracture.Methods Twenty preservative fresh cadavers were used for the preparation of specimens.Radial head resection was performed at upper edge of annular ligament in 5 cadaver specimens(10 sides).The other 15 specimens(30 sides) were,respectively,treated with osteotomy at 2 mm,1/4 and 1/2 of coronoid process height in group A,group B and group C,with 10 sides in each group.The changes in valgus angle were measured at 0,30,60,90 and 120 degrees of elbow joint flexion.Results The osteotomy at 2 mm and 1/4 of coronoid process height resulted in unrestricted elbow flexor and extensor activity and unaffected stability.But,elbow flexor and extensor activity and the stability were,respectively,restricted and affected mildly by the osteotomy at 1/2 of coronoid process height,moderately by the osteotomy at 3/4 of coronoid process height,and severely by the osteotomy at the base of coronoid process height.The valgus angles at 0,30,60,90 and 120 degrees of elbow joint flexion in group A were not significantly different from those in group B and C when osteotomy was performed at 2 mm and 1/4 of coronoid process height(P0.05).In addition,the valgus angles at 30,60,90 and 120 degrees of elbow joint flexion induced by osteotomy at 1/2 of coronoid process height were obviously different from those induced by osteotomy at 2 mm and 1/4 of coronoid process height(all P0.05).Conclusion Ulna coronoid process fractures at height not greater than 1/4 of coronoid process has no significant effect on elbow joint stability and surgical removal of bone chips will not affect the function of elbow joint.However,coronoid process fractures at height greater than 1/2 of coronoid process can markedly affect elbow joint stability.Therefore,coronoid process height should be kept greater than 1/2 of original height in the reduction and internal fixation of radial head comminuted fracture complicated with coronoid process fracture." @default.
- W2389759318 created "2016-06-24" @default.
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- W2389759318 date "2012-01-01" @default.
- W2389759318 modified "2023-09-23" @default.
- W2389759318 title "Effect of Loss of Ulna Coronoid Process Height on Stability of Elbow Joint after Radial Head Excision in Vitro" @default.
- W2389759318 hasPublicationYear "2012" @default.
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