Effects of alendronate sodium combined with InterTan on osteoporotic femoral intertrochanteric fractures and fracture recurrence

Table 4 Comparison of bone metabolism markers between the two groups (mean ± SD)

Groups	β-CTX (ng/L)			T-PINP (μg/L)
	Preoperative	3 mo after operation	12 mo after operation	Preoperative	3 mo after operation	12 mo after operation
Control group (n = 63)	345.85 ± 85.23	321.25 ± 71.36	304.58 ± 68.45a	21.45 ± 5.26	22.58 ± 6.04	25.89 ± 5.12a
Observation group (n = 63)	351.14 ± 79.92	261.25 ± 64.74a	162.25 ± 51.33a	21.37 ± 5.08	26.14 ± 4.86a	29.85 ± 4.75a
t value	0.359	4.943	13.204	0.087	3.645	4.500
P value	0.720	0.000	0.000	0.931	0.000	0.000

^aP < 0.05 vs before operation.

β-CTX: β-Collagen-specific sequence; T-PINP: Total aminoterminal propeptide of type I procollagen.