Describe how and why maintaining the position of full knee extension limits the ability to maximally flex the hip both actively and passively. Does maintaining excessive hip flexion limit the ability to accomplish full knee extension? Consequently, describe how and why maintaining the position of full knee flexion limits the ability to maximally extend the hip both actively and passively. Does maintaining excessive hip extension limit the ability to accomplish full knee flexion? Include at least two scholarly references. 
Cite all sources used in APA format. Sources should be evidence-based research from medical journals. WebMD, Wikipedia, etc. ARE NOT VALID SOURCES. Paper must be typed,
Times New Roman, 
12pt font, 
doubled spaced, 
1 inch margins.