File:Flexion Extension Leg.png - Wikimedia Commons

Kinematic graphs of hip flexion/extension of a patient with LSS (a) and

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Excessive flexed position of the femoral component causes abnormal kinematics and joint contact/ ligament forces in total knee arthroplasty

File:Leg angles 3.png - Wikimedia Commons

PNF exercise: (A) diagonal 1 flexion, (B) diagonal 1 extension, (C)

Positions obtained for maximal flexion and extension of the hindleg

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