Ultrasound guided femoral nerve blocks as a compulsory pain protocol in femoral neck fractures

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World Journal of Orthopedics

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2218-5836

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Baishideng Publishing Group Inc, 7041 Koll Center Parkway, Suite 160, Pleasanton, CA 94566, USA

Retrospective Cohort Study

World J Orthop. Dec 18, 2025; 16(12): 102402
Published online Dec 18, 2025. doi: 10.5312/wjo.v16.i12.102402

Table 4 Association between morbidity and all independent variables

Characteristic	Overall (n = 1577)	Non-morbidity group (n = 572)	Morbidity group, (n = 1005)	P value¹
US guided femoral nerve block, n/N (%)	387/1577 (25)	174/572 (30)	213/1005 (21)	< 0.001
Age, mean (SD)	76 (15)	72 (17)	79 (13)	< 0.001
Gender, n/N (%)				0.4
Female	1016/1577 (64)	377/572 (66)	639/1005 (64)
Male	561/1577 (36)	195/572 (34)	366/1005 (36)
ASA score, n/N (%)				< 0.001
1	38/1045 (3.6)	27/395 (6.8)	11/650 (1.7)
2	579/1045 (55)	268/395 (68)	311/650 (48)
3	377/1045 (36)	96/395 (24)	281/650 (43)
4	51/1045 (4.9)	4/395 (1.0)	47/650 (7.2)
BMI, mean (SD)	25.5 (4.7)	25.3 (4.4)	25.5 (4.8)	0.5
CVA, n/N (%)	21/1577 (1.3)	3/572 (0.5)	18/1005 (1.8)	0.060
T2DM, n/N (%)	343/1577 (22)	83/572 (15)	260/1005 (26)	< 0.001
IHD, n/N (%)	315/1577 (20)	64/572 (11)	251/1005 (25)	< 0.001
Intra capsular fracture, n/N (%)	9/1577 (0.6)	3/572 (0.5)	6/1005 (0.6)	> 0.9
Extra capsular fracture, n/N (%)	220/1577 (14)	89/572 (16)	131/1005 (13)	0.2
Time to surgery (hours), mean (SD)	38 (60)	36 (73)	39 (52)	0.3
Hospitalization days (days), mean (SD)	15 (14)	13 (11)	16 (14)	< 0.001

¹Statistical tests performed: χ² test of independence; Wilcoxon rank-sum test; Fisher's exact test.

BMI: Body mass index; T2DM: Type 2 diabetes mellitus; US: Ultrasound; IHD: Ischemic heart disease.

Citation: Klassov Y. Ultrasound guided femoral nerve blocks as a compulsory pain protocol in femoral neck fractures. World J Orthop 2025; 16(12): 102402
URL: https://www.wjgnet.com/2218-5836/full/v16/i12/102402.htm
DOI: https://dx.doi.org/10.5312/wjo.v16.i12.102402

Klassov Y. Ultrasound guided femoral nerve blocks as a compulsory pain protocol in femoral neck fractures. World J Orthop 2025; 16(12): 102402 [PMID: 41480506 DOI: 10.5312/wjo.v16.i12.102402]

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