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Muscle Compartments

Innervation, Action, Names of Muscles (of Upper and Lower Limb)- a rough guide.

CompartmentMuscles PresentInnervationActionBlood SupplyExceptions
Thigh- Anterior Quadriceps Femoris Muscles- Rectus Femoris, Vastus Lateralis, Vastus Intermedius, Vastus Medialis Femoral Nerve (L2, L3, L4) Extend the leg at the knee. (blank) (blank)
Illiopsoas Psoas Major, Illiacus PM- Ventral Rami of Lumbar Nerves (L1-3); IM- Femoral (L2-4) Flexes the thigh at hip and flexor of trunk. (blank) (blank)
Gluteal Muscles Tensor fasciae latae, Gluteus maximus, Gluteus medius, Gluteus Minimus Superior gluteal nerve (L5 and S1) Abduct thigh and medially rotate thigh. (blank) GM- Inferoir gluteal nerve (L5, S1 and S2), also a lateral rotator.
Thigh- Medial Compartment Adductor Muscles (A.Brevis, A.Longus, A.Magnus); Obturator Muscles (O.Externis, O.Internis); Gracillis Obturtator Nerve (L2, L3, L4) Adductors+ Gracillis- adduct the leg at the hip; Obturator Muscles- laterally rotate thigh at hip. (blank) Obturator internis- supplied by nerve to obturator internis.
Thigh- No catagory Piriformis, Superior gemellus, Inferior gemellus Piriformis- ventral ramii of S1 and S2; SG- nerve to OI; IG-nerve to QF Laterally rotate and extend the thigh. (blank) (blank)
Thigh- Posterior Compartment Semitendinosus, Semimembranosus, Biceps Femoris (long and short head) Sciatic Nerve, tibial division (L5, S1, S2) Flex the leg at the knee and rotate flexed leg medially. (blank) Short head of biceps femoris- sciatic nerve, common fibular division.
Leg- Anterior Compartment Dorsiflexors of foot (Tibialis Anterior, Extensor Hallicus Longus, Extensor Digitorum Longus) Deep fibular (peroneal) nerve (L4 and L5) Dorsiflex the foot, inverters of foot. Anterior tibial artery EHL also extends big toe. ; AT also inverts the foot, EDL also extends the proximal phalanges of the 4 toes.
Leg- Lateral Compartment Everters of foot (Fibularis Longus, Fibularis Brevis) Superficial fibular (peroneal) nerve. Evert the foot. Fibular artery (blank)
Leg- Posterior Compartment (superficial) Gastrocnemius, Soleus, Plantaris and Popliteus Tibial nerve (L4, L5, S1 and S2) GN, S, popliteus- flex foot at ankle Posterior tibial artery, Gastocnemius and Soleus flex leg at knee and raise heel during walking; Plamtaris- plantar flexion of foot; Popliteus- medially rotates leg at knee
Leg- Posterior Compartment (deep) Flexor Hallicus Longus, Flexor Digitorum Longus, Tibialis Posterior Tibial Nerve (S2, S3) Plantar flex foot at ankle Posterior tibial artery FHL- flex distal phalanx of big toe; FDL- flex 4 lateral digits, TP- invert foot (when not weight bearing)
Forearm- posterior, deep Extensor indicis, Extensor pollicus longus, Extensor pollicus brevis, Abductor pollicus longus Radial nerve and its branches (C7, C8) Extensors of wrist and at fingers. (blank) Pollicus= movements of the thumb; Incidus= middle finger alone
Forearm- anterior, deep (supination) Supinator Deep branch of radial nerve (C5 and C6) Rotates radius to supinate the forearm. Posterior interosseous. (blank)
Forearm- anterior, deep (pronators) Pronators Median nerve (PT- C6,C7; PQ- C8, T1) Pronation of the hand(PQ) and ulna (PT). (blank) (blank)
Forearm- anterior, superficial Flexor carpi radialis, Flexor digitorum profundus, brachioradialis, Flexor pollicus longus, Flexor digitorum superficialis, Palmaris longus, Flexor carpi ulnaris Median nerve and its branches. Flexors at wrist and fingers. (blank) Flexor carpi ulnaris and medial half of flexor digitorum profundus are inervated by ulnar nerve and its branches.
Forearm -posterior, superficial Extensor carpi radialis longus, Extensor carpi radialis brevis, extensor digitorum,Extensor digiti minimi, Extensor carpi ulnaris, Radial nerve and its branches. Extensors of wrist and fingers. (blank) (blank)
Created by: sam62