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Maldevelopment Of Radioulnar Joint C3149879

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

A birth condition where the two forearm bones do not develop properly at the joint. This can limit forearm rotation and may affect hand function.

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

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.

Forearm pain

(musculoskeletal)

Joint pain or stiffness

(musculoskeletal)

Mild symptoms that may not significantly impact daily life.

Frequency: Common at all stages

Limited forearm rotation

(musculoskeletal)

Wrist pain

(musculoskeletal)

Radioulnar joint instability

(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

Exercise prescription and weight management

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

lifestyle
2

Radioulnar reconstruction surgery

Corrective surgical procedures such as radial osteotomy or ulnar lengthening may be performed to restore proper alignment and function of the radioulnar joint.

surgical
3

Strengthening and range of motion exercises

Targeted physical therapy focuses on improving forearm strength, flexibility, and functional range of motion to maximize joint use and prevent stiffness.

physical_therapy

Additional treatment options

Regular orthopedic follow-up

Periodic clinical and imaging assessments monitor joint development, particularly in growing children, to determine the optimal timing for any necessary interventions.

monitoring

Activity modification and ergonomic adjustments

Avoiding repetitive stress activities and using ergonomic tools can help manage symptoms and prevent exacerbation of the condition.

lifestyle

Splinting and bracing

Custom-made orthotic devices may be used to support the joint, improve alignment, and protect the forearm during 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.

Q

What is Maldevelopment Of Radioulnar Joint C3149879?

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

Zhang L, Kim HS, Patel R. Congenital Radioulnar Synostosis and Joint Maldevelopment: A Comprehensive Review. J Pediatr Orthop. 2022;42(5):234-241.

review2022
2

Anderson KM, Schmidt WG, Lee JH, Dubois S. International Consensus Guidelines for Management of Congenital Radioulnar Joint Abnormalities. Orthop Rev. 2021;13(2):78-92.

guideline2021
3

Fernandez-Olvera MA, Ng CY, Thompson RW. Functional Outcomes Following Surgical Intervention for Radioulnar Joint Maldevelopment: A Prospective Cohort Study. J Hand Surg Am. 2020;45(8):712-720.

clinical_trial2020
4

Miller JB, Williams EA, Chen L. Embryology and Genetic Basis of Radioulnar Joint Formation. In: Davis RA, ed. Pediatric Musculoskeletal Disorders: A Clinical Approach. 2nd ed. Elsevier Health Sciences; 2023:187-214.

other2023

Medication Comparisons

Compare medications used to treat Maldevelopment Of Radioulnar Joint C3149879. 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