Dynamic Hip Screw for the Treatment of Femoral Neck Fractures: A Prospective Study with 96 Patients

Table 2

Avascular necrosis versus screw placement on the femoral head.

Screw position in the femoral head	Number	(%)	Necrosis	(%)	𝑝
H-A	8	8	5	5	0.003
H-C	8	8	3	3	0.126
H-P	1	1	0	—	—
M-A	3	3	1	1	0.425
M-C	47	49	4	4	0.054
M-P	5	5	1	1	0.607
L-A	2	2	1	1	0.307
L-C	11	12	1	1	0.684
L-P	11	12	0	—	—
Total	96	100	16	16

H: high; M: middle; L: low; A: anterior; P: posterior; C: central.