The Study Of Clinical Anatomy And Classification For Rolando Fracture

Part 1: Study of Clinical Anatomy on Ligaments of CarpometacarpalJoint of ThumbObjective: To observe and measure the ligaments of carpometacarpal joint ofthumb for providing the numerical data and to investigate the effect of ligaments on stabilization of the jointMethods: 16 hand specimens of adult corpse treated with antisepsis wereundertaken dissection. we observe the shape, location and enthesis of ligaments sub vitro. The lenght, width, thictness and maxium length of the ligaments were measured. Normal and maxium gap of the joint were also measured ,eapecially the variation of the gap of the joint when different ligaments were injured.Results: The research proved that there are five ligaments attaching the carpo-metacarpal joint of thumb: anterior oblique ligament, dorsal radial ligament ,posterior oblique ligament, the first interosseous metacarpal ligament and palmar ligament. Dorsal radial ligament is the most thick and tenacious. The first interosseous metacarpal ligament is secondary. Anterior oblique ligament is wider but thin .Palmar ligament is the most thin . Posterior oblique ligament is slender .The change of joint gap is obviousest when cutting off the dorsal radial ligament .The change is secondary when cutting off the anterior oblique ligament.Conclusion: The five ligaments all have the effect on stabilization of the joint. Especially the dorsal radial ligament and anterior oblique ligament have the main effect.