The Clinical and Radiological Outcomes of the Use of Titanium Elastic Nail in The Fixation of Fresh Non-comminuted Fracture Mid-shaft Clavicle

Inclusion Criteria: * : (1) Type IIA2 (angulation \> 45 ) or IIB1 (shortening or overlapping displacement length \> 2 cm) fresh unilateral midshaft clavicular fractures according to Robinson classification. (2) Patient without underlying diseases such as primary hypertension and cardiac diseases. Exclusion Criteria: * (1) pathological fractures. (2) multiple injuries of upper limbs. (3) open fractures. (4) combined with injuries of blood vessels or nerves. (5) other diseases which affected the functions of upper limbs. (6) Proximal and distal clavicular fractures. (7) Comminuted clavicular fractures.