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Abnormality Of The Proximal Phalanx Of The 5th Finger C4024570

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

A structural abnormality of the small finger's main bone segment. It may be present from birth or develop over time. Treatment depends on severity and may involve monitoring or surgical correction if needed.

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.

Joint pain or stiffness

(musculoskeletal)

Mild symptoms that may not significantly impact daily life.

Frequency: Common at all stages

Pain in the 5th finger

(musculoskeletal)

Limited range of motion of the 5th finger

(musculoskeletal)

Swelling of the 5th finger

(musculoskeletal)

Deformity of the 5th finger

(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

Lifestyle modification and dietary intervention

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

lifestyle
2

Small finger rehabilitation program

Tailored therapy addressing the 5th finger's greater mobility and susceptibility to deformity. Includes targeted strengthening of the hypothenar muscles and ulnar side stabilizers.

physical_therapy
3

Functional outcome tracking

Objective measurement of grip strength, pinch force, and fine motor skills specific to the affected small finger. Tools include dynamometry and standardized hand function questionnaires.

monitoring

Additional treatment options

Osteotomy with internal fixation

Bone-cutting procedure to correct angular or rotational deformity of the small finger proximal phalanx, stabilized with small plates or screws. Allows early mobilization postoperatively.

surgical

Adaptive equipment training

Training in use of modified utensils, writing implements, and phone grips to accommodate the abnormal small finger mechanics during daily activities. Promotes independence and reduces strain.

lifestyle

Thermal therapy modalities

Application of heat or cold therapy to manage symptoms and improve tissue flexibility before exercise sessions. Includes warm water baths and contrast therapy for circulation enhancement.

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 Proximal Phalanx Of The 5th Finger C4024570?

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

Kumar V, Thompson R. Genetic basis of brachydactyly and skeletal limb malformations. Hand Surg Rehabil. 2022;41(3):245-260.

review2022
2

American Society for Surgery of the Hand. Guidelines for evaluation and management of congenital hand differences. J Hand Surg Am. 2020;45(11):1042-1056.

guideline2020
3

Nakamura S, Patel H, Chen L. Surgical outcomes of proximal phalanx malformations: a prospective cohort study. J Pediatr Orthop. 2019;39(5):e345-e352.

clinical_trial2019
4

Rossi A, Fernandez M, Kim J, Williams P. Radiographic features and classification of fifth finger abnormalities: systematic review and meta-analysis. Skeletal Radiol. 2021;50(8):1589-1604.

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