Flexor Digitorum Profundus

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 Flexor Digitorum Profundus is a deep muscle of the anterior forearm.

Anatomical Attachments:

• Origin: Attaches to the anteromedial surface of the ulna and from the ulna half of the interosseus membrane.
• Insertion: Attaches into the base of the last 4 phalanges.

Action: Flexes the terminal phalanges of each finger and extends the hand.

Synergist: Abductor pollicis longus, Flexor digitorum superficialis and Flexor pollicis longus.

Antagonist: Flexor carpi radialis, flexor carpi ulnaris, Palmaris longus.

Click for Muscle Test 1 and 2 

Click for Muscle Test 3 and 4 

Nerve Supply: Ulnar and volar interosseus of median nerve.

Nerve Entrapment: Entraps the ulnar nerve.

Vascular supply: Volar interosseus of the ulnar artery.

• Primary: The pain refers to the same digit that the fibers mobilize.
• Satellite or associated triggers: Pectoralis minor, Scalene.

Trigger Point Signs and Symptoms: Finger pain with difficulty in keyboarding, knitting or playing a piano or organ.

Trigger Point Activating and Perpetuating Factors: Sustained gripping as in driving a car with the steering wheel gripped tightly and wrist flexed, or the persistent use of hand tools or power tools with persistent vibration.

Differential Diagnosis: (Segmental, Subluxation, Somatic dysfunction) C7 C8 or T1 Radiculopathy, Thoracic Outlet Syndrome, Carpal Tunnel Syndrome, Cubital Tunnel Syndrome, Frostbite, Diabetic neuropathy, Polyneuropathy, Osteoarthritis, Rheumatoid Arthritis, Gout, Trigger Finger, Systemic infections or inflammation, Nutritional inadequacy, Metabolic imbalance, Toxicity, Side effects of medication.

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