Lecture Exam 3 - Lateral and Anterior Compartments of the Leg

Lateral Femoral Condyle

Medial Femoral Condyle

Tibial Plateau

Lateral Collateral Ligament

Medial Collateral Ligament

Medial Collateral Ligament

Resists abduction of the knee

Lateral Collateral Ligament

Resists adduction of the knee

Lateral Meniscus

Medial Meniscus

Medial Collateral Ligament and Medial Meniscus

These two are connected to each other

Lateral Collateral Ligament and Lateral Meniscus

These two are NOT connected to each other

Popliteal Synovial Cyst (Baker Cyst)

herniation of synovial membrane through knee joint capsule

Anterior Cruciate Ligament

Posterior Cruciate Ligament

Anterior Cruciate Ligament

Resists hyperextension of the knee

Posterior Cruciate Ligament

Resists hyperflexion of the knee

Unhappy Triad

Rupture of the Medial Collateral Ligament, Medial Meniscus, and Anterior Cruciate Ligament

Popliteus

Lateral Epicondyle of Femur, Lateral Meniscus

Superior attachment of Popliteus

Posterior Tibia

Inferior attachment of Popliteus

Initiates flexion

Action of Popliteus

Tibial Nerve

Nerve of Popliteus

Small Saphenous Vein

Sural Nerve

Great Saphenous Vein

Saphenous Nerve

Dorsal Venous Arch

Head of the Fibula

Lateral Malleolus

Medial Malleolus

Hallux (big toe)

Tuberosity of the 5th Metatarsal

Cuboid

Medial Cuneiform

Intermediate Cuneiform

Lateral Cuneiform

Navicular

Calcaneus

Calcaneal Tuberosity

Talus Bone

Sustentaculum Tali

Head of the Fibula

Fibularis Longus Origin

Medial Cuneiform Bone, Base of 1st Metatarsal

Fibularis Longus Insertion

Fibula

Fibularis Brevis Origin

Tuberosity of 5th Metatarsal

Fibularis Brevis Insertion

Talocrural Joint

Dorsiflexion

Plantarflexion

Inversion

Eversion

Subtalar Joint

Plantarflexion and Eversion

Fibularis Longus and Brevis Action

Superficial Fibular Nerve

Nerve of Fibularis Longus and Brevis

Superior Fibular Retinaculum

Inferior Fibular Retinaculum

Tibialis Anterior, Extensor Hallucis Longus, Extensor Digitorum Longus, Fibularis Tertius

Anterior Compartment of the leg muscles

Deep Fibular Nerve

Nerve of the Anterior Compartment of the leg muscles

upper lateral leg

Tibialis Anterior Origin

Medial Cuneiform Bone and Base of 1st Metatarsal

Tibialis Anterior Insertion

Dorsiflexion and Inversion

Tibialis Anterior Action

L5

Tibialis Anterior Myotome

Toe Flexion

Toe extension

upper lateral leg

Extensor Digitorum Longus Origin

Extensor expansions of Digits 2-5

Extensor Digitorum Longus Insertion

Extension of Digits 2-5

Extensor Digitorum Longus Action

upper lateral leg

Extensor Hallucis Longus Origin

Dorsal surface of Distal Phalanx of Hallux

Extensor Hallucis Longus Insertion

Extension of big toe

Extensor Hallucis Longus Action

L5

Extensor Hallucis Longus Myotome

Fibula

Fibularis Tertius Origin

Dorsal surface of Base of 5th Metatarsal

Fibularis Tertius Insertion

Dorsiflexion and Eversion

Fibularis Tertius Action

Tibialis Anterior

Extensor Digitorum Longus

Extensor Hallucis Longus

Fibularis Tertius

Common Fibular Neuropathy (footdrop)

Trauma to Common Fibular Nerve weakens all dorsiflexors but spares plantarflexors of posterior compartment