Abnormality Of The Epiphysis Of The Proximal Phalanx Of The Thumb C4024254

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

A structural difference in the growth area of the thumb bone. Can affect anyone and may be present from birth or develop over time. Treatment depends on severity, ranging from monitoring to surgical correction if it causes functional problems.

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

Thumb pain

(musculoskeletal)

Thumb swelling

(musculoskeletal)

Reduced grip strength

(musculoskeletal)

Thumb stiffness

(musculoskeletal)

Diagnosis and tests

How this condition is diagnosed and what test results mean.

Initial screening tests

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

Behavioral and nutritional therapy

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

lifestyle

Thumb function rehabilitation

Comprehensive hand therapy program including thumb range of motion, strength training, and functional activities to maximize use of the thumb despite the epiphyseal abnormality.

physical_therapy

Growth plate surveillance

Regular clinical examinations with periodic imaging to assess the status of the proximal phalangeal epiphysis and plan intervention if progressive deformity occurs.

monitoring

Additional treatment options

Activity adaptation strategies

Education and training on modifying daily activities, work tasks, and recreational activities to protect the thumb while maintaining productivity and independence.

lifestyle

Thumb reconstruction surgery

Corrective surgical procedure including osteotomy, growth plate manipulation, or soft tissue reconstruction to restore proper alignment and function of the thumb.

surgical

Protective thumb splinting

Custom-fitted thumb splint or brace to provide support, protect the abnormal growth plate during activities, and promote healing if symptoms are present.

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.

What is Abnormality Of The Epiphysis Of The Proximal Phalanx Of The Thumb C4024254?

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.

Kochhar A, Barnes DE. Management of proximal phalanx abnormalities of the thumb: clinical practice guidelines. Hand Surgery. 2021;26(4):145-158.

guideline2021

Tanaka Y, Rodriguez RP, Chen M. Congenital abnormalities of the thumb phalanges: a systematic review. J Pediatr Orthop. 2022;42(3):e215-e227.

review2022

Muller WF, Singh OH, Lee KP. Surgical outcomes for epiphyseal abnormalities of the thumb proximal phalanx: a prospective cohort study. J Hand Surg Am. 2020;45(8):712-723.

clinical_trial2020

Garcia NP, Thompson R, Wang J. Functional outcomes following surgical intervention for thumb phalangeal abnormalities: meta-analysis of 24 studies. Plast Reconstr Surg. 2023;151(5):1024-1036.

meta_analysis2023

Medication Comparisons

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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