31. The second to fifth joints are degree of freedom ( flexion / extension ). 32. Flexion and extension of these parts should be passive led by right hand action.33. Folding may sometimes occur along the flexion lines. 34. A single strand is obviously terrible in flexion . 35. A positive response is seen with flexion of the terminal phalanx of the thumb. 36. The calcaneal internal rotation ( adduction ) and plantar flexion is the key deformity. 37. The femur attempts to spread the menisci anteroposteriorly in extension and mediolaterally in flexion . 38. Recordings from lateral tibialis anterior flexion nerve were taken to demonstrate this control scheme. 39. Reduced mobility in the hips will necessitate some spinal flexion ( leaning forward ). 40. It also has a synergistic role in extension and lateral flexion of the lumbar spine.