Principles of Functional Exercise

Common distortions caused by tightness include lateral tracking of femur during hip flexion

SARTORIuS

Joint Action performed by the Hip

1. Flexion


2. Abduction


3. External rotation

Joint Action performed by the Knee

1. Flexion

For example it brings the knee up and turns thigh outward (crossing legs when sitting).

Origin: Ilium – Iliac spine (anterior superior)

Insertion: Tibia – Medial condyle (anterior)

Common distortions due to tightness is a restriction of hip extension and internal rotation. Some
sports associated with these movements include ballet, soccer, and skating

HAMSTRINGS

Biceps Femoris (Long Head)

Joint Action performed by the Knee

1. Flexion


2. External Rotation

Joint Action performed by the Hip

1. Extension

Origin: Ishium – Ischial tuberosity

Insertion: 1. Tibia – Lateral condyle

2. Fibula – Head