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Semimembranosus
Pointer Plus

Pointer Plus

The Pointer Plus is an easy to use trigger point (TP) locator which incorporates a push button stimulation feature to immediately treat Trigger point pain.
 

 

The Biceps Femoris, Semitendinosus, and Semimembranosus, which are posterior thigh muscles, comprise the Hamstring muscle group.

Anatomical Attachments:

  • Origin: Attaches to the posterior aspect of the ischial tuberosity.
  • Insertion: Attaches to the posteromedial condyle of the tibia.

Action: Flexes and rotates the leg internally when the knee is flexed and also extends the thigh.

Synergist:  

Antagonist: Iliopsoas, Pectineus, Tensor fasciae latae, Adductor brevis, Sartorius.

 

Click for Muscle Test 

 

Nerve Supply: Sciatic Nerve (L5, S1, S2).

Vascular supply: Profunda femoris artery.

Travell and Simons Trigger Point Pain Referral:  

Click on a small image to view an enlarged image

 

Trigger Point Signs and Symptoms: The pain may be experienced while sleeping. The posterior leg pain is worsened during walking, and persistent sitting may result in deep buttocks, anterior thigh, or pain being experienced in the popliteal fossa. There is also pain when rising from a seated position.

Trigger Point Activating and Perpetuating Factors: Sitting in a chair where ones feet do not touch the floor for long periods of time.

Differential Diagnosis: (Segmental, Subluxation, Somatic dysfunction) L5 radiculopathy, S1 or S2 Nerve Compression, Postlaminectomy pain syndrome, Pulled or torn Hamstring, Sprain/Strain injury, Bruised ischial tuberosity, Bone cancer, Bone fracture, Deep vascular thrombosis (DVT), Multiple sclerosis, Lipedema, Rheumatoid Arthritis, Bursitis, Osteoarthritis, Tension Myalgia, Polymyalgia rheumatica, Systemic lupus erythematosus, Reflex sympathetic dystrophy (Complex regional pain syndrome), Fibromyalgia, Coxa Plana, Cauda equina syndrome, Eosinophilic fasciitis, Tetanus, Systemic infections or inflammation, Nutritional inadequacy, Metabolic imbalance, Toxicity, Side effects of medication.

 

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