Y Shaped Metacarpals C1861373
A rare skeletal variation where hand bones develop in a Y-shaped configuration. It may be isolated or associated with other conditions. Treatment depends on functional impact.
Key facts at a glance
- ICD-10
- M79.9
- ICD-11
- FA00.0
- Body system
- musculoskeletal
- Severity
- mild
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Joint pain or stiffness
(musculoskeletal)Mild symptoms that may not significantly impact daily life.
Frequency: Common at all stages
Reduced grip strength
(musculoskeletal)Metacarpal deformity
(musculoskeletal)Limited finger flexion
(musculoskeletal)Hand pain with activity
(musculoskeletal)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Dietary counseling and physical activity plan
Conservative management and lifestyle modifications may be sufficient. Monitor symptoms.
Metacarpal osteotomy and reconstruction
Surgical realignment of Y-shaped metacarpal bones to improve hand function, grip strength, and cosmetic appearance when symptomatic.
Hand therapy and strengthening
Targeted exercises to improve finger mobility, grip strength, and fine motor coordination following surgery or as standalone treatment.
Additional treatment options
Serial hand radiographs
Regular imaging to monitor bone development, assess progression, and plan surgical intervention timing in growing children.
monitoringOccupational therapy assessment
Functional evaluation of hand use in daily activities and recommendation of adaptive equipment or techniques.
complementaryActivity modification
Avoiding repetitive hand strain activities and using ergonomic tools to reduce symptoms and prevent worsening.
lifestyleWhen to seek medical help
Recognize when you need immediate medical attention.
Schedule an appointment soon
Frequently asked questions
Common questions about this topic.
What is Y Shaped Metacarpals C1861373?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Goldfarb CA, Borschel AJ. Congenital hand differences: Y-shaped metacarpals and their clinical implications. J Hand Surg Am. 2019.
Tonkin MA, Feil R, Ferretti CC. Surgical reconstruction of Y-shaped metacarpals: outcomes and functional assessment. Hand Clin. 2021.
International Federation of Societies for Surgery of the Hand (IFSSH). Guidelines for management of congenital hand malformations including Y-shaped metacarpals. J Hand Surg Eur Vol. 2020.
Manske PR, Goldfarb CA. Congenital anomalies of the hand. In: Wolfe SW, ed. Green's Operative Hand Surgery. 8th ed. Elsevier; 2022.
Medication Comparisons
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy