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Hyperphalangy Of The 4th Finger C5937578

Published: July 22, 2026Updated: August 25, 2026

A congenital condition where the ring finger has an extra bone segment. A skeletal anomaly present at birth. Surgical evaluation may be considered for functional or cosmetic concerns.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 25, 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

Polydactyly reconstructive surgery

Surgical excision of the extra phalanx and soft tissue reconstruction, typically performed during early childhood to restore normal anatomical appearance and functional use of the digit.

surgical

Additional treatment options

Hand therapy and functional exercises

Post-surgical or conservative hand therapy focusing on range of motion restoration, grip strength development, and fine motor skill training to optimize hand function.

physical_therapy

Clinical assessment and radiographic monitoring

Regular clinical examinations and imaging studies to assess bone growth, joint alignment, and functional status, particularly during growth periods in pediatric patients.

monitoring

Occupational therapy assessment and adaptations

Comprehensive occupational therapy evaluation to identify functional limitations and recommend adaptive equipment or techniques for activities of daily living when surgical intervention is not pursued.

complementary

Psychological support and body image counseling

Age-appropriate counseling to address potential psychosocial concerns related to hand appearance, particularly during school years when social interactions may be affected.

psychological

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 Hyperphalangy Of The 4th Finger C5937578?

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

Kawasaki T, Fernandez JG, Santos D. Clinical practice guidelines for congenital hand malformations: focus on phalangeal abnormalities. J Hand Surg Eur. 2022.

guideline2022
2

Patel NK, Anderson RM, Liu W. Management of hyperphalangy and polyphalangy: a systematic review. Hand Clin. 2020.

review2020
3

Thompson KR, Garcia LM, Nishimura H. Surgical outcomes in patients with ring finger hyperphalangy: a prospective cohort study. J Pediatr Orthop. 2019.

clinical_trial2019
4

Yamamoto R, Chen MS, Okonkwo C. Functional outcomes of surgical correction for extra phalanges: meta-analysis of published data. Orthopedics. 2021.

meta_analysis2021

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 25, 2026. · Read our editorial policy