Orthopedics Book

Intra-Articular Disorders

Cardiovascular Medicine

  • Hypothenar Hammer Syndrome

Fracture Management

Ligament

Rheumatology

Tendon

Procedure Chapter related topics

Rheumatology Chapter related topics

Infectious Disease Chapter related topics

Dermatology Chapter related topics

Anatomy Chapter related topics

Examination Chapter related topics

Symptoms Chapter related topics

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Hypothenar Hammer Syndrome

Aka: Hypothenar Hammer Syndrome
  1. See Also
    1. Overuse Syndromes of the Hand and Wrist
    2. Ulnar Tunnel Syndrome
  2. Mechanism
    1. Occlusion of ulnar artery at the wrist
      1. Secondary to thrombosis of ulnar artery
    2. Due to repetitive Trauma to ulnar hand
      1. Example: hand is used as a hammer
  3. Symptoms
    1. Hypothenar pain and pallor
    2. Hypothenar Paresthesias
    3. Affected digits are cool
  4. Signs
    1. Localized tenderness at hypothenar prominence
    2. Abnormal Allen Test
  5. Imaging
    1. Wrist XRay with Carpal Tunnel view
      1. Assess for Carpal BoneFracture (esp. pisiform Fracture, hook of hamate Fracture)
  6. Differential Diagnosis
    1. Ulnar Tunnel Syndrome
    2. Carpal BoneFracture at ulnar aspect (associated with Ulnar Nerve injury)
      1. Pisiform Fracture
      2. Hook of Hamate Fracture
  7. Management
    1. Eliminate precipitating factors
    2. Surgical resection of thrombosed section of vessel
      1. Indicated for persistent symptoms

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