Femur length chart by week in mm

Introduction

When it comes to monitoring fetal growth and development during pregnancy, healthcare professionals use various methods and tools to assess the size and well-being of the fetus. One of the key measurements taken during routine ultrasounds is the femur length of the fetus. This measurement, along with other fetal biometry parameters, can help predict gestational age and fetal weight, and detect any potential growth problems or abnormalities. In this blog post, we will explore the femur length chart by week in mm, and how it can be used to track fetal growth during pregnancy.

Femur length chart in mm

During routine prenatal check-ups, healthcare professionals use ultrasound measurements to monitor fetal growth and development. One of the key fetal biometry parameters that they measure is the femur lenght, which is the length of the thigh bone. The femur length is measured in millimeters and plotted on a femur length chart by week of gestation. This chart, along with other biometry measurements, is used to predict gestational age and fetal weight and detect any potential growth problems or abnormalities in the fetus.

Gestational Age	Femur Length (mm) by Percentile
(Weeks)	2.5	5	10	25	50	75	90	95	97.5
14	10	10	11	12	13	14	15	16	17
15	12	13	14	15	16	17	18	19	20
16	15	16	17	18	19	20	22	22	23
17	19	19	20	21	22	24	25	26	26
18	22	22	23	24	26	27	28	29	30
19	25	26	26	28	29	30	31	32	33
20	28	29	30	31	32	33	35	35	36
21	31	32	33	34	35	36	38	38	39
22	34	35	35	37	38	39	40	41	42
23	36	37	38	39	41	42	43	44	45
24	39	40	41	42	43	45	46	47	47
25	41	42	43	44	46	47	48	49	50
26	43	44	45	46	48	49	51	51	52
27	46	46	47	49	50	52	53	54	55
28	48	48	49	51	52	54	55	56	57
29	50	50	51	53	54	56	57	58	59
30	51	52	53	55	56	58	60	60	61
31	53	54	55	57	59	60	62	63	64
32	55	56	57	59	61	62	64	65	66
33	57	58	60	61	63	65	66	67	68
34	59	60	61	63	65	67	68	69	70
35	61	62	63	65	67	69	70	71	73
36	63	64	65	67	69	70	72	73	75
37	65	66	67	68	70	72	74	75	76
38	66	67	68	70	72	74	75	77	78
39	67	68	69	70	73	75	76	78	79
40	68	68	69	70	73	75	77	78	79

Conclusion

In conclusion, tracking fetal growth and development is an important part of prenatal care, and the femur length chart is a valuable tool for monitoring fetal biometry and predicting gestational age and fetal weight. By regularly measuring and charting the femur length of the fetus during routine ultrasounds, healthcare professionals can detect any potential growth problems or abnormalities and take appropriate actions to ensure the well-being of both the mother and the baby. If you have any concerns or questions about fetal growth or prenatal care, don’t hesitate to talk to your healthcare provider.