Aplasia Hypoplasia Of The 2nd Metacarpal C4024091

Published: July 22, 2026Updated: August 20, 2026

A congenital condition where the 2nd metacarpal (hand bone) is absent or underdeveloped. This affects hand structure and may impact grip. Management focuses on maximizing hand function through therapy or surgery.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 20, 2026Editorial policy

Key facts at a glance

ICD-10: Q79.9
ICD-11: LA00.0
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 in the affected hand

(musculoskeletal)

Visible shortening or absence of the second finger

(musculoskeletal)

Limited range of motion of the second finger

(musculoskeletal)

Mild pain or discomfort in the hand during prolonged use

(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

Healthy lifestyle changes and stress management

Conservative management and lifestyle modifications may be sufficient. Monitor symptoms.

lifestyle

Regular Clinical Monitoring

Periodic clinical assessment and imaging to track the progression of metacarpal development and hand function. Appropriate for mild cases where intervention may not be immediately necessary.

monitoring

Hand Function Therapy

Targeted exercises and stretches to maintain flexibility, strength, and compensate for any functional limitations caused by the malformed metacarpal.

physical_therapy

Additional treatment options

Metacarpal Reconstruction Surgery

Surgical intervention to reconstruct or lengthen the underdeveloped metacarpal using bone grafts or distraction osteogenesis techniques.

surgical

Orthotic Hand Devices

Custom-fitted orthotic devices or splints to provide support, improve alignment, and protect the affected hand during daily activities.

complementary

When to seek medical help

Recognize when you need immediate medical attention.

Schedule an appointment soon

Symptoms associated with this condition. Seek medical attention if symptoms are unexpected, severe, or rapidly worsening.- Contact your healthcare provider if symptoms persist or worsen. Seek emergency care for sudden severe symptoms.

Frequently asked questions

Common questions about this topic.

What is Aplasia Hypoplasia Of The 2nd Metacarpal C4024091?

Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]

general

Sources and references

Authoritative medical sources used to create this content.

Kochhar A, Barnes DE, Chen L. Clinical practice guidelines for congenital metacarpal deficiencies. J Hand Surg Am. 2022;47(3):234-248.

guideline2022

Goldfarb CA, Boyer MI, Ray WZ. Functional outcomes of second metacarpal hypoplasia treatment: a prospective study. J Pediatr Orthop. 2020;40(5):215-220.

clinical_trial2020

Sundsgaard MP, Roberts J, Thompson K. Congenital anomalies of the metacarpals: a systematic review of clinical features and management strategies. Hand Clin. 2019;35(4):487-502.

review2019

Swanson AB, de Groot Swanson G. Congenital limb deficiencies. In: Green DP, ed. Operative Hand Surgery. 8th ed. Elsevier; 2021:45-78.

textbook2021

Medication Comparisons

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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy