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Gastrocnemius Muscle – Attachments, Actions & Innervation

image descriptionGastrocnemius Muscle

Gastrocnemius Muscle attached to the lower limb with other musclesa
Gastrocnemius Muscle attached to the lower limb with other musclesa
Gastrocnemius Muscle attached to the lower limb with other musclesa
Gastrocnemius Muscle attached to the lower limb alone
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image descriptionAttachments of Gastrocnemius Muscle: Origin & Insertion

Origin: (proximal attachments):

a. Medial head: medial condyle of femur and area just above condyle.
b. Lateral head: lateral condyle of femur and area just above condyle.

Insertion: (distal attachments):
Posterior calcaneus via calcaneal tendon.

Gastrocnemius Muscle attached to the lower limb with other musclesa
Gastrocnemius Muscle attached to the lower limb alone
Gastrocnemius Muscle - Origin and Insertion
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Actions of Gastrocnemius Muscle:

a. image descriptionPlantar flexes foot.

Plantar Flexion (1)
Plantar Flexion (2)
Plantar Flexion (3)
Plantar Flexion (4)
Plantar Flexion (5)

b. image descriptionFlexes the leg at the knee.

Leg flexion (1)
Leg flexion (2)
Leg flexion (3)
Leg flexion (4)
Leg flexion (5)

Nerve to Muscle and its Spinal Segment:

Tibial nerve (S1, S2).

Overview:

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