Exhaustive Study Notes on Lower Limb Myology and Kinesiology

Muscles of the Hip - Gluteus maximus: Origin: ilium; Action: hip extension, rotation. - Gluteus medius: Origin: ilium; Action: hip abduction, rotation. - Gluteus minimus: Origin: ilium; Action: hip abduction, rotation. - Tensor fasciae latae: Origin: ilium; Action: hip flexion, rotation. - Piriformis: Origin: sacrum; Action: hip rotation, abduction. - Gemellus: Variants: superior/inferior; Action: hip rotation. - Obturator: Variants: internus/externus; Action: hip rotation. - Quadratus femoris: Action: hip rotation.

Muscles of the Anterior Thigh - Quadriceps Group: - Vastus intermedius: Origin: femur; Action: knee extension. - Rectus femoris: Origin: ilium; Action: knee extension, hip flexion. - Vastus lateralis: Origin: femur; Action: knee extension. - Vastus medialis: Origin: femur; Action: knee extension. - Iliopsoas: Fusion of iliacus and psoas major; Action: hip flexion. - Pectineus: Origin: pubis; Action: adducts, flexes thigh. - Sartorius: Origin: ilium; Action: hip rotation, knee flexion.

Summary of Joint Movements #### Hip - Extensors: Biceps femoris, Gluteus maximus. - Flexors: Iliopsoas, Rectus femoris. - Adductors: Adductor longus, brevis, magnus, Gracilis. - Abductors: Gluteus medius, minimus.

Knee - Flexors: Gastrocnemius, Biceps femoris. - Extensors: Rectus femoris, Vastus lateralis, intermedius, medialis.

Ankle - Plantarflexors: Soleus, Gastrocnemius. - Dorsiflexors: Tibialis anterior.