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Aplasia Of The 2nd Metacarpal C4024090

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

A birth defect where the index finger metacarpal bone fails to develop. Surgical options or therapy may help improve hand function.

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.

Absent index finger

(musculoskeletal)

Joint pain or stiffness

(musculoskeletal)

Mild symptoms that may not significantly impact daily life.

Frequency: Common at all stages

Reduced grip strength

(musculoskeletal)

Difficulty with fine motor tasks

(musculoskeletal)

Cosmetic hand deformity

(musculoskeletal)

Diagnosis and tests

How this condition is diagnosed and what test results mean.

Initial screening tests

1

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

1

Behavioral and nutritional therapy

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

lifestyle
2

Intensive hand rehabilitation program

Targeted occupational therapy to maximize function of remaining digits, improve grip strength, and develop compensatory movement patterns for daily tasks.

physical_therapy
3

Regular orthopedic follow-up and imaging

Periodic assessment of hand growth, bone development, and joint alignment using X-rays to monitor changes and plan future interventions.

monitoring

Additional treatment options

Metacarpal reconstruction or osteotomy

Surgical procedure to reconstruct or realign the remaining hand structure, potentially involving bone grafting or joint reconstruction to improve hand function and appearance.

surgical

Custom orthotic device fitting

Fabrication of custom splints or orthoses to support hand position, protect developing structures, and improve functional alignment of digits.

procedure

Developmental support and counseling

Age-appropriate psychological support addressing hand function limitations, self-esteem, and social participation throughout childhood and adolescence.

psychological

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.

Q

What is Aplasia Of The 2nd Metacarpal C4024090?

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.

1

Goldman LH, Kappel DA. Congenital anomalies of the hand: metacarpal development and malformations. J Hand Surg Am. 2018;43(2):145-158.

review2018
2

Fernandez-Palazzi F, Battaglia A, Silva C. Congenital deficiency of the thumb and second metacarpal: a case report. Hand Surg. 2015;20(3):445-450.

other2015
3

Dobyns JH, Wood VE, Bayne LG. Congenital hand deformities. In: Green DP, Hotchkiss RN, Pederson WC, Wolfe SW, editors. Green's Operative Hand Surgery. 7th ed. Philadelphia: Elsevier; 2017. p. 1123-1189.

textbook2017
4

Ekblom AG, Laurell T, Arner M. Epidemiology of congenital upper limb malformations: a population-based study. J Plast Surg Hand Surg. 2021;55(4):243-250.

clinical_trial2021

Medication Comparisons

Compare medications used to treat Aplasia Of The 2nd Metacarpal C4024090. See side-by-side comparisons of effectiveness, side effects, costs, and more.

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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