1. http://www.oandplibrary.org/alp/chap13-01.asp

2. none

3. none

4. http://boneandspine.com/normal-gait-cycle/

5. http://dynamicbracingsolutions.net/Pages/Bracing_Concepts/Swing_Stance_Control.html

6. http://www.drpribut.com/sports/spgait.html

7. none

8. https://podiapaedia.org/wiki/biomechanics/gait/determinants-of-gait/

9. https://www.physio-pedia.com/Trendelenburg_Gait

10. none

11. none

12. https://www.orthobullets.com/foot-and-ankle/7001/gait-cycle

13. http://emedicine.medscape.com/article/320160-overview#aw2aab6b2

14. http://emedicine.medscape.com/article/320160-overview#aw2aab6b2

15. http://emedicine.medscape.com/article/320160-overview#aw2aab6b2

16. http://emedicine.medscape.com/article/320160-overview#aw2aab6b2

17. http://www.oandplibrary.org/alp/chap26-01.asp

18. https://podiapaedia.org/wiki/biomechanics/gait/determinants-of-gait/

19. http://patient.info/doctor/abnormal-gait

20. none

21. https://academic.oup.com/milmed/article/181/suppl_4/30/4209437

   https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3645289/

     https://academic.oup.com/milmed/article/181/suppl_4/30/4209437

22. none