Palmaris Longus

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.
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The Palmaris longus is a superficial anterior muscle of the forearm.

Anatomical Attachments:
- Origin: Attaches to the medial epicondyle of the humerus.
- Insertion: Attaches to the palmar aponeurosis and the transverse carpal ligament.
Action: Flexes the hand and wrist, and aids in the pronation and flexion of the forearm.
Nerve Supply: Median nerves (C7, C8, and T1).
Vascular supply: Posterior ulnar recurrent artery.
Travell and Simons Trigger Point Pain Referral:
- Primary: The pain refers to the middle of the palm, with spillover
pain extending upward to the remote volar surface of the forearm and the base of the thumb,
but not to include the digit.
- Satellite or associated triggers: The distal medial head of the Triceps brachii.
Click on a small image to view an enlarged image
Trigger Point Signs and Symptoms: Unlike, the deep aching pain associated with most
myofascial triggers, Travell and Simons note, that triggers within the Palmaris longus elicit
a prickling type pain involving the palm, base of the thumb, and distal forearm.
Usually, predicating this atypical pain pattern is tenderness and soreness of the palm which makes
it difficult to grasp and/or use hand tools.
The pain experienced is easily confused with a cervical radiculopathy.
Trigger Point Activating and Perpetuating Factors: A direct trauma e.g. a fall on the hands,
weeding or pruning, using a saw or hammer, or walking on crutches.
Differential Diagnosis: (Segmental, Subluxation, Somatic dysfunction) C7 C8 or T1 radiculopathy, Subacute
meningitis or Peripheral neuropathy, Dupuytren’s contracture, Frostbite, Diabetic neuropathy, Polyneuropathy, Charcot’s
arthropathy, Carpal tunnel Syndrome, Eosinophilic fasciitis, Raynaud’s Phenomena, Raynaud’s Disease, Complex regional pain
syndrome (Reflex sympathetic Dystrophy), Fibromyalgia, Systemic lupus erythematosus, Osteoarthritis, Rheumatoid arthritis,
Bursitis, Systemic infections or inflammation, Nutritional inadequacy, Metabolic imbalance, Toxicity, Side effects of
medication.
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