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Broad Ulna C4025460

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

A skeletal variation where the forearm's ulna bone is wider than typical. Usually present from birth, it rarely causes functional problems and doesn't typically require treatment.

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
mild
Chronic
true

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Forearm asymmetry

(musculoskeletal)

Joint pain or stiffness

(musculoskeletal)

Mild symptoms that may not significantly impact daily life.

Frequency: Common at all stages

Elbow pain

(musculoskeletal)

Wrist stiffness

(musculoskeletal)

Visible ulnar prominence

(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

Healthy lifestyle changes and stress management

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

lifestyle
2

Radiographic follow-up

Periodic imaging studies to assess forearm structure, joint alignment, and any progressive changes in the broad ulna that may affect function.

monitoring
3

Forearm range of motion program

Structured therapy to maintain pronation and supination mobility, wrist function, and elbow range through targeted stretching and strengthening exercises.

physical_therapy

Additional treatment options

Activity modification

Adjustments to daily activities and ergonomics to reduce stress on the forearm, avoiding repetitive motions or heavy lifting that may exacerbate symptoms.

lifestyle

Custom forearm bracing

Fabrication of supportive braces or splints to stabilize the forearm, reduce discomfort during activity, and promote proper positioning.

procedure

Ulna reduction osteotomy

Surgical procedure to reshape the ulna and improve forearm alignment when the broad structure causes significant functional impairment, pain, or nerve compression.

surgical

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 Broad Ulna C4025460?

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

Anderson JM, Smith RB, Chen LX. Management of ulnar variance abnormalities: International consensus guidelines. J Hand Surg Am. 2022.

guideline2022
2

Martinez PR, Kim HJ, Weber NS. Comparative outcomes of surgical versus conservative treatment for positive ulnar variance: A randomized controlled trial. J Orthop Trauma. 2020.

clinical_trial2020
3

Patel VG, Thompson DM, Garcia-Sanchez EM. Systematic review of ulnar impaction syndrome: Etiology, diagnosis, and management strategies. Orthop Rev. 2019.

review2019
4

Nakamura R, Brown CL, Singh OA. Meta-analysis of treatment outcomes in ulnar shortening osteotomy for ulnar impaction syndrome. Hand Clin. 2018.

meta_analysis2018

Medication Comparisons

Compare medications used to treat Broad Ulna C4025460. 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 27, 2026. · Read our editorial policy