The involvement of the L5 Nerve Root can affect all of the below movements, except:
The L4 nerve root is involved in the adduction of the hip, extension of the knee and dorsiflexion of the ankle. Thigh adduction is not mediated the L5 nerve root. The muscles of thigh adduction are supplied by the Obturator Nerve. Obturator nerve (L2 to L4 anterior divisions) adducts and medially rotates the thigh. Ref: Peripheral Nerve Injuries in the Athlete, 2003 By Joseph H. Feinberg and Neil I. Spielholz, Page 214; In a Page Neurology, By Jon Brillman, Scott Kahan, 2005 Blackwell Publishing, Page 155; Color atlas of human anatomy:Locomotor system, By Werner Platzer, Edition 2008, Page 240.
Adduction of the Thigh
Flexion of the Knee
Extension of the Great Toe
Extension of the Knee