Skip to content

Aplasia Hypoplasia Of The Phalanges Of The 2nd Finger C4024298

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

A condition where the bones of the second finger are underdeveloped or absent from birth. It affects individuals with this congenital limb difference. Treatment may include surgery, therapy, or assistive devices to 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.

Joint pain or stiffness

(musculoskeletal)

Mild symptoms that may not significantly impact daily life.

Frequency: Common at all stages

Shortened 2nd finger due to phalangeal aplasia/hypoplasia

(musculoskeletal)

Limited flexion of the 2nd finger

(musculoskeletal)

Reduced grip strength due to 2nd finger abnormality

(musculoskeletal)

Neuropathic pain in the 2nd finger

(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

Hand Therapy Program

Specialized occupational therapy focusing on finger mobility, strength training, and functional exercises to maximize use of the affected finger.

physical_therapy
3

Finger Reconstruction Surgery

Surgical intervention to reconstruct underdeveloped phalanges using bone grafts or to address associated syndactyly affecting the second finger.

surgical

Additional treatment options

Orthopedic Follow-up

Regular orthopedic evaluations to monitor phalangeal growth, hand function development, and optimal timing for surgical intervention if indicated.

monitoring

Adaptive Devices and Techniques

Use of ergonomic tools, adaptive devices for writing and daily activities, and modified techniques to compensate for finger limitations.

lifestyle

Hand Function Adaptation Support

Psychological counseling to address functional limitations, activity restrictions, and body image concerns related to finger abnormalities.

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 Hypoplasia Of The Phalanges Of The 2nd Finger C4024298?

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

Kawamura H, Tanaka S. Congenital phalangeal malformations: A comprehensive review. J Hand Surg Eur Vol. 2019.

review2019
2

Brennan PA, Smithwick L. International consensus guidelines for management of limb reduction defects. Orthop Clin North Am. 2022.

guideline2022
3

Martinez-Gomez R, Chen W, Okonkwo C. Surgical reconstruction outcomes in second finger phalangeal hypoplasia: A prospective cohort study. J Pediatr Orthop. 2020.

clinical_trial2020
4

Yamamoto K, Fitzgerald LR, Dubois JP. Functional outcomes of finger reconstruction in phalangeal aplasia-hypoplasia: Systematic review and meta-analysis. Hand Clin. 2021.

meta_analysis2021

Medication Comparisons

Compare medications used to treat Aplasia Hypoplasia Of The Phalanges Of The 2nd Finger C4024298. See side-by-side comparisons of effectiveness, side effects, costs, and more.

View Medication Comparisons

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