Aplasia Of The Proximal Phalanx Of The 2nd Finger C4024275
A condition where the base bone of the index finger is underdeveloped or absent from birth. It may affect finger function, and treatment options include therapy or surgery if needed.
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.
Decreased dexterity
(musculoskeletal)Joint pain or stiffness
(musculoskeletal)Mild symptoms that may not significantly impact daily life.
Frequency: Common at all stages
Absent second finger proximal phalanx
(musculoskeletal)Pain in the second finger
(musculoskeletal)Stiffness in the second finger
(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
Hand growth and development monitoring
Serial clinical and radiographic assessment of hand development to track functional status and guide timing of any necessary interventions.
Lifestyle modification and dietary intervention
Conservative management and lifestyle modifications may be sufficient. Monitor symptoms.
Finger function therapy
Targeted hand therapy to maintain joint mobility, strengthen supporting structures, and develop compensatory strategies for the affected second finger.
Additional treatment options
Pollicization or toe-to-hand transfer
Advanced surgical procedure involving toe transfer or pollicization to create a functional digit, considered for severe cases affecting hand function.
surgicalFunctional orthotic splinting
Custom splints designed to support the hand, protect remaining structures, and optimize function during specific activities or rest.
procedureAdaptive equipment training
Training in use of adaptive tools and equipment for writing, typing, and daily activities to enhance independence and function.
lifestyleWhen 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 Aplasia Of The Proximal Phalanx Of The 2nd Finger C4024275?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy