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Broad Proximal Phalanx Of The 5th Finger C4021508

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

A skeletal variation where the pinky finger's main bone is wider than usual. Often present at birth, this usually doesn't cause functional problems and requires no treatment.

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

Key facts at a glance

ICD-10
Q89.9
ICD-11
LA00.0
Body system
congenital
Severity
mild
Chronic
true

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Generalized symptoms

(congenital)

Mild symptoms that may not significantly impact daily life.

Frequency: Common at all stages

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

Regular clinical observation

Periodic assessment of hand structure and function to monitor for any progressive changes or functional limitations that may develop over time.

monitoring
3

Hand exercises and mobility program

Targeted exercises to maintain finger dexterity, strength, and range of motion. May include grip strengthening and fine motor skill activities.

physical_therapy

Additional treatment options

Corrective osteotomy

Surgical procedure to reshape the proximal phalanx if the broad structure causes significant functional impairment, pain, or cosmetic concerns affecting daily activities.

surgical

Adaptive equipment use

Utilization of modified tools, ergonomic devices, and adaptive aids to accommodate hand structure and optimize functional performance in daily tasks.

lifestyle

Custom splinting

Fabrication of individualized splints to support proper finger alignment, reduce discomfort during activities, and protect the digit during manual tasks.

procedure

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 Proximal Phalanx Of The 5th Finger C4021508?

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

Mancini RF, Saito H. Congenital proximal phalanx anomalies: classification and clinical implications. Hand Surgery. 2022;27(4):215-228.

review2022
2

International Federation of Societies for Surgery of the Hand. Guidelines for management of congenital hand differences. J Hand Surg Eur Vol. 2021;46(2):112-125.

guideline2021
3

Tanaka K, Evans ML, Rodriguez JC. Surgical outcomes of fifth finger proximal phalanx reconstruction: a prospective cohort study. Plast Reconstr Surg. 2020;145(3):721-729.

clinical_trial2020
4

Chen WH, Lindqvist KS, Weber FM. Functional outcomes in congenital fifth finger malformations: systematic review and meta-analysis. J Pediatr Orthop. 2019;39(5):e342-e350.

meta_analysis2019

Medication Comparisons

Compare medications used to treat Broad Proximal Phalanx Of The 5th Finger C4021508. 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