Objective: To discuss the anatomical reconstruction of coracoclavicular ligament therapies by means of double Endobutton plate for Neer Ⅱdistal clavicle fracture and evaluate the treatment effect.Methods: Observed 12 clinical cases(suffering from Neer Ⅱdistal clavicle fracture) of the anatomical reconstruction of trapezoid ligament and conoid ligament by double Endobutton plate

cerclage or internal fixation by lag screws were observed.The function of acromioclavicular joint was evaluated by ASES and Constant-Murley standard.Results: During 4～12 months

2 of the cases showed that the reduction parts of fracture were missing

bone displacement was less than 5 mm

and the average fracture healing time was 9.2 weeks.In the end

the average ASES score was(91.5±3.2)

the average VAS score for pain was(1.5±0.3)

the average lift angle was(145.0±5.4) degree

the average extorsion angle was(36.2±4.1) degree and the average Constant-Murley score was(92.8±3.8).Conclusion: It is benefits of the stability of fracture with the anatomical reconstruction of coracoclavicular ligament.The surgery does not affect acromioclavicular joint or organic texture under acromion.It prevents many complications resulting from clavicle crook plate.Moreover

the cutting stress is dispersed

which effectively avoids the complications such as clavicle and coracoids fractures.