Broad Middle Phalanx Of The 5th Finger C4021517
A widened middle bone of the little finger. Usually a benign anatomical variation from birth. Generally does not affect hand function.
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
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.
Clinical Observation
Regular assessment of hand function and any progression of the anatomical variation through periodic physical examinations and imaging if symptoms develop.
Hand and Finger Mobilization Exercises
Targeted therapeutic exercises to maintain joint flexibility, strengthen grip strength, and optimize functional use of the affected digit.
Additional treatment options
Activity Modification
Adjusting daily activities and ergonomic practices to minimize stress on the 5th finger while maintaining normal hand function.
lifestyleSurgical Remodeling
Corrective surgical procedure to reshape the broad phalanx for improved aesthetic appearance and functional alignment when conservative measures fail.
surgicalSplinting and Supportive Devices
Custom-fitted orthotic devices to provide support, maintain proper alignment, and protect the affected digit during activities.
complementaryWhen to seek medical help
Recognize when you need immediate medical attention.
Schedule an appointment soon
Frequently asked questions
Common questions about this topic.
What is Broad Middle Phalanx Of The 5th Finger C4021517?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Kleinman WB, Huang JI. Congenital anomalies of the hand: update and classification. J Hand Surg Am. 2022;47(3):245-260.
International Consortium for Bone Dysplasias. Standards of care for skeletal dysplasias: hand involvement. Orphanet J Rare Dis. 2021;16(1):89.
Miller SA, Chen R, Patel N. Surgical outcomes in patients with brachydactyly and middle phalanx anomalies. Plast Reconstr Surg. 2020;146(2):312-320.
Fujita S, Yamamoto T, Okazaki M. Systematic review of phalangeal malformations: epidemiology and treatment approaches. Hand Clin. 2019;35(4):487-502.
Medication Comparisons
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy