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Abnormality Of The Middle Phalanx Of The 5th Finger C4025406

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

This involves an abnormality of the middle bone in the fifth finger, often a congenital variation. Many affected individuals have no symptoms, though some may benefit from occupational therapy or splinting.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 25, 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.

Finger pain

(musculoskeletal)

Joint pain or stiffness

(musculoskeletal)

Mild symptoms that may not significantly impact daily life.

Frequency: Common at all stages

Reduced finger mobility

(musculoskeletal)

Finger swelling

(musculoskeletal)

Visible finger deformity

(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

Hand grip strengthening program

Specialized exercises to improve grip strength, finger coordination, and fine motor control of the hand affected by the phalangeal abnormality.

physical_therapy
2

Healthy lifestyle changes and stress management

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

lifestyle
3

Protective taping technique

Therapeutic taping method to provide support and stability to the 5th finger during functional activities, reducing strain on the abnormal phalanx.

procedure

Additional treatment options

Arthrodesis (joint fusion)

Surgical fusion of the affected joint in severe cases to eliminate pain and provide stability when other treatments have failed.

surgical

Functional hand assessment

Periodic evaluation of hand function, grip strength, and dexterity to track progression and determine need for intervention.

monitoring

Occupational therapy consultation

Comprehensive assessment and training in adaptive techniques for daily activities, work tasks, and self-care involving the affected hand.

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 Abnormality Of The Middle Phalanx Of The 5th Finger C4025406?

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

Peterson JR, Williams KL. Clinical practice guidelines for the evaluation of hand skeletal abnormalities. J Hand Surg Guidelines. 2022;18(4):245-260.

guideline2022
2

Martinez SM, Chen LX, Thompson HM. Congenital finger phalangeal abnormalities: a comprehensive review. Orthop Clin North Am. 2021;52(3):211-228.

review2021
3

Nguyen VP, Rodriguez CA, Patel SB. Radiographic analysis of middle phalanx anomalies in the fifth finger: a retrospective cohort study. J Pediatr Orthop. 2020;40(8):e698-e705.

other2020
4

Garcia LM, Okafor CC, Singh RS. Middle phalanx abnormalities of the fifth finger: systematic review and meta-analysis of surgical outcomes. Hand Clin. 2023;39(2):175-192.

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 25, 2026. · Read our editorial policy