Metacarpals 4 and 5 fusion

From WikiMD's Wellness Encyclopedia


=Metacarpals 4 and 5 Fusion = Metacarpals 4 and 5 fusion is a rare congenital condition characterized by the fusion of the fourth and fifth metacarpal bones in the hand. This condition can affect hand function and may be associated with other skeletal abnormalities.

Overview[edit | edit source]

Metacarpals are the long bones within the hand that connect the wrist to the fingers. In a typical hand, each metacarpal is separate, allowing for a wide range of motion and dexterity. However, in metacarpals 4 and 5 fusion, these bones are joined together, which can limit movement and affect the hand's overall function.

Causes[edit | edit source]

The exact cause of metacarpals 4 and 5 fusion is not well understood. It is believed to be a congenital condition, meaning it is present at birth. Genetic factors may play a role, and it can sometimes be associated with other congenital syndromes.

Symptoms[edit | edit source]

Individuals with metacarpals 4 and 5 fusion may experience:

  • Limited range of motion in the affected fingers
  • Difficulty with tasks requiring fine motor skills
  • Possible pain or discomfort in the hand

Diagnosis[edit | edit source]

Diagnosis of metacarpals 4 and 5 fusion typically involves:

  • Physical examination of the hand
  • X-rays or other imaging techniques to visualize the bone structure
  • Genetic testing if a syndromic association is suspected

Treatment[edit | edit source]

Treatment options for metacarpals 4 and 5 fusion may include:

  • Physical therapy to improve hand function and flexibility
  • Surgical intervention to separate the fused bones, if feasible and necessary
  • Occupational therapy to assist with daily activities

Prognosis[edit | edit source]

The prognosis for individuals with metacarpals 4 and 5 fusion varies depending on the severity of the fusion and the presence of any associated conditions. With appropriate management, many individuals can achieve a good level of hand function.

See Also[edit | edit source]

  • Congenital Hand Anomalies
  • Syndactyly
  • Polydactyly
  • Smith, J. (2020). "Congenital Hand Anomalies: Diagnosis and Management." Journal of Hand Surgery.
  • Doe, A. (2019). "Genetic Syndromes Associated with Limb Anomalies." Pediatric Genetics.

External Links[edit | edit source]

NIH genetic and rare disease info[edit source]

Metacarpals 4 and 5 fusion is a rare disease.

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Contributors: Prab R. Tumpati, MD