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Plantaris

 

The Plantaris is a superficial posterior muscle of the leg.

Anatomical Attachments:

  • Origin: Attaches to the lateral supracondylar line of the femur and the oblique popliteal ligament of the knee.
  • Insertion: Attaches to the posterior part of the calcaneus.

Action: Plantar flexes the foot and assists in flexion of the leg.

Synergist: Gastrocnemius.

Nerve Supply: Tibial nerve (L4, L5, S1).

Vascular supply: Popliteal artery.

Vascular entrapment: Entraps the popliteal artery.

Travell and Simons Trigger Point Pain Referral:  

Click on a small image to view an enlarged image

 

Trigger Point Signs and Symptoms: Pain to the posterior of the knee and the upper calf.

Trigger Point Activating and Perpetuating Factors: Fall, sudden cooling of the muscle.

Differential Diagnosis: (Segmental, Subluxation, Somatic dysfunction) S1 or S2 radiculopathy, Rupture plantaris, Popliteus tendinitis, Tenosynovitis, Popliteal artery aneurysm, Bakerís cyst, Deep Vein Thrombosis (DVT) - Intermittent claudication, Peripheral Vascular Disease (PVD), Avulsion of popliteus tendon, Muscle strain, Posterior compartment syndrome, Popliteal lymphadema, Systemic infections or inflammation, Nutritional inadequacy, Metabolic imbalance, Toxicity, Side effects of medication.

 

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