Cementless bipolar hemiarthroplasty compared with proximal femoral nail anti-rotation of unstable intertrochanteric fractures in senile patients with osteoporosis: a retrospective study

Table 4 Complications of the two groups from the time of discharge to two years

	CBH	PFNA	Statistics	P value
Delayed incision healing	2	0		0.493^a
Dearticulation	1	0		1^a
Limb length inequality	4	0		0.114^a
Prosthetic loosening	1	5	χ² = 1.835^b	0.176
Prosthesis fracture	0	1		0.486^a
Nonunion	2	1	χ² < 0.001^b	1
Reoperation	0	3		0.109^a
Refracture	1	3	χ² = 0.329^b	0.350
Thrombus	2	1	χ² < 0.001^b	1

^aUsing Fisher probabilities in 2 × 2 table. ^bUsing chi-squared test with Yates’ correction. χ²: chi-squared test

ISSN: 1471-2474