This chapter mainly introduces the cases of old clavicular fracture complicated with brachial plexus delayed palsy, missed diagnosis and misdiagnosis of distal clavicular fracture, and the error of loop plate suspension fixation of distal clavicular fracture, analyzes the causes of occurrence, and puts forward the complications related to the rigid internal fixation of coracoclavicular titanium cable, the attention after loop plate suspension fixation, and the revision methods after failure.