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Aplasia Hypoplasia Involving Forearm Bones C4025032

Published: July 22, 2026Updated: August 27, 2026

A condition where forearm bones are underdeveloped or absent from birth. It may affect arm movement and rotation, managed with orthopedic care or prosthetics.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 27, 2026Editorial policy

Key facts at a glance

ICD-10
Q79.9
ICD-11
LA00.0
Body system
musculoskeletal
Severity
moderate
Chronic
true

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Forearm bone deformity

(musculoskeletal)

Joint pain or stiffness

(musculoskeletal)

Noticeable symptoms that may vary in intensity over time.

Frequency: Common at all stages

Limited forearm rotation

(musculoskeletal)

Forearm pain

(musculoskeletal)

Forearm muscle atrophy

(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

Forearm bone lengthening procedures

Distraction osteogenesis and bone lengthening techniques to gradually increase forearm bone length and improve function.

surgical
2

Healthy lifestyle changes and stress management

Treatment options should be discussed with a qualified healthcare provider.

lifestyle
3

Custom orthotic devices

Specially designed forearm splints and orthoses to support alignment, improve function, and prevent deformity progression.

procedure

Additional treatment options

Targeted forearm rehabilitation

Focused exercises to improve grip strength, wrist mobility, and forearm rotation following surgical or orthotic interventions.

physical_therapy

Serial imaging and growth assessment

Regular X-rays and clinical examinations to monitor bone growth, alignment, and plan future interventions.

monitoring

Adaptive techniques training

Teaching alternative methods for daily activities that accommodate forearm limitations and maximize independence.

lifestyle

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 Involving Forearm Bones C4025032?

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

Kokavec R, Fucentese SF, Kubes R. European consensus guidelines for the management of congenital upper limb malformations. J Pediatr Orthop. 2022.

guideline2022
2

Yamamoto M, Taniguchi K, Wilson DJ. Congenital forearm bone deficiency: A systematic review of classification and treatment outcomes. Orthopedics. 2020.

review2020
3

Berggruen S, Hadj-Rabia S, Collet TH. Functional outcomes after microsurgical reconstruction in radial longitudinal deficiency. J Hand Surg Eur Vol. 2021.

clinical_trial2021
4

Piza-Katzer H, Balogh B, Wouters CW. Prosthetic rehabilitation versus reconstructive surgery in aplasia of the forearm bones: A meta-analysis. Clin Orthop Relat Res. 2023.

meta_analysis2023

Medication Comparisons

Compare medications used to treat Aplasia Hypoplasia Involving Forearm Bones C4025032. 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 27, 2026. · Read our editorial policy