Objective To investigate the morphological characteristics of the transverse bundle(TB)of the ulnar collateral ligament of the elbow joint.Methods 71 adult elbow joints were dissected and the anatomic fea-tures of the TB were noted.The lengths,widths of the origins and insertions of the AB and TB were measured with a digital vernier caliber.Results(1)The TB was divided into two types according to the relation with AB:① type I,the TB was continued to the distal half with the AB in 45 cases.② type Ⅱ,the TB was continued to the entire AB in 26 cases,which was significantly more frequently observed in females than those of males(P＜0.05).(2)There was a significant difference in length of AB between male and female(P＜0.05).Conclusions The TB fre-quently continues to the distal half of the AB,which may have important implications for the surgical reconstruction of elbow ligaments.
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