2.

外科手术治疗结果

Surgery treatment results

Items	PFNA (n=28)	ZNN (n=31)	P
PFNA, proximal femoral nail antirotation; ZNN, zimmer natural nail.
Operation time/min	62.7±14.2	73.6±18.3	0.014
Amount of bleeding/mL	56.8±20.6	68.7±31.6	0.089
Fracture healing time/months	4.6±0.8	4.5±0.7	0.545
Postoperative complications, n(%)	1 (3.6)	1 (3.2)	1
TAD /mm	17.7±5.5	16.5±4.7	0.081
Hip Harris score	91.8±3.6	92.2±3.8	0.700