Metacarpal synostosis

Editor-In-Chief: Prab R Tumpati, MD
Obesity, Sleep & Internal medicine
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W8MD medical weight loss NYC and sleep center NYC

Metacarpal synostosis
Synonyms	Metacarpal fusion
Pronounce	N/A
Specialty	N/A
Symptoms	Limited movement of the affected fingers, abnormal hand appearance
Complications	Arthritis, limited hand function
Onset	Congenital
Duration	Lifelong
Types	N/A
Causes	Genetic mutations, developmental anomalies
Risks	Family history of the condition
Diagnosis	X-ray, Physical examination
Differential diagnosis	Syndactyly, Brachydactyly
Prevention	None
Treatment	Surgery, Physical therapy
Medication	N/A
Prognosis	Varies depending on severity and treatment
Frequency	Rare
Deaths	N/A

Metacarpal synostosis is a rare congenital condition characterized by the fusion of two or more metacarpal bones in the hand. This fusion can occur between any of the five metacarpal bones, leading to limited mobility and functionality of the affected hand.

Symptoms

Individuals with metacarpal synostosis may experience stiffness, reduced range of motion, and deformity in the affected hand. The severity of symptoms can vary depending on the extent of fusion and the specific metacarpal bones involved.

Causes

The exact cause of metacarpal synostosis is not well understood. It is believed to result from abnormal development during fetal growth, leading to the fusion of adjacent metacarpal bones. Genetic factors may also play a role in the development of this condition.

Diagnosis

Metacarpal synostosis is typically diagnosed through physical examination and imaging studies such as X-rays. These tests can help identify the extent of fusion and guide treatment decisions.

Treatment

Treatment for metacarpal synostosis depends on the severity of symptoms and functional limitations. In some cases, conservative management such as physical therapy and splinting may be sufficient to improve hand function. Surgical intervention may be considered for more severe cases to separate the fused metacarpal bones and restore hand mobility.

Prognosis

The prognosis for individuals with metacarpal synostosis varies depending on the extent of fusion and the effectiveness of treatment. With appropriate management, many individuals can achieve improved hand function and quality of life.

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