Common site of fracture in tibia is
The tibia is commonly fractured at the junction of upper two-thirds and lower one-third of the shaft as the shaft is most slender here. Such fractures may unite slowly, or may not unite at all as the blood supply to this pa of the bone is poor. This may also be caused by tearing of the nutrient aery.Ref: Chaurasia; Volume 2; 6th edition; Page no: 25
Upper one-third
Junction of upper two-thirds and lower one-third
Lower one-third
Middle one-third
Lower limb