Fig. 1
(A) Right femur has marked anterior and lateral bowing.
(B) Initial radiographs show the distal shaft fracture of the left femur (Winquist-Hansen type III).
Fig. 2
(A, B) Postoperative radiographs show diminished lateral bowing and gap of medial cortex.
(C, D) X-ray at postoperative 3 months shows breakage of the locking compression plate.
Fig. 3
(A, B) A second operation was performed using locking compression plate (LCP).
(C, D) But 6 weeks later, the LCP was broken again.
Fig. 4
(A, B) Third postoperative radiographs show the fracture treated with an antegrade femur nail that preserved the anterior and lateral bowing of the femur.
(C, D) 9 months after the third operation, a fatigue fracture occurred at the most proximal hole among the distal locking holes.
Fig. 5
(A, B) A fourth operation was performed with antegrade femur nail and locking compression plate.
(C, D) One year after the fourth operation, the radiographs show the bony union of the fracture site.
Fig. 6Bending moment increases proportionally to the distance between the plate and mechanical axis. D: Distance.