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Fetal Foot Measurement

Indications
1. Intrauterine Fetal Demise dating
2. Subarachnoid Hemorrhage demise dating
3. Most accurate method for dating gestational age
Fetal Foot Measurements
1. Week 8.5: Foot Length: 3 mm
2. Week 9.0: Foot Length: 4 mm
3. Week 9.5: Foot Length: 5 mm
4. Week 10.0: Foot Length: 6 mm
5. Week 11.0: Foot Length: 7-8 mm
6. Week 12.0: Foot Length: 9 mm
7. Week 13.0: Foot Length: 11 mm
8. Week 14.0: Foot Length: 14 mm
9. Week 15.0: Foot Length: 18 mm
10. Week 16.0: Foot Length: 20 mm
11. Week 17.0: Foot Length: 23 mm
12. Week 18.0: Foot Length: 26 mm
13. Week 19.0: Foot Length: 29 mm
14. Week 20.0: Foot Length: 33 mm
15. Week 21.0: Foot Length: 36 mm
16. Week 22.0: Foot Length: 39 mm
17. Week 23.0: Foot Length: 42 mm
18. Week 24.0: Foot Length: 45 mm

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This page was written by Scott Moses, MD. This page was last revised before 5/10/08, prior to consistent tracking of revision date. This page was last published on 6/1/2008. Please send comments and questions to the editor. Contact information may be found on the page About the Family Practice Notebook. These pages are best viewed with Microsoft Internet Explorer 6.0.