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Aplasia Of The Proximal Phalanx Of The 2nd Toe C4023827

Published: July 22, 2026Updated: August 20, 2026

A condition where the base bone of the second toe is underdeveloped or absent from birth. This may affect toe alignment or balance, and treatment depends on symptoms.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 20, 2026Editorial policy

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.

Gait abnormality

(musculoskeletal)

Joint pain or stiffness

(musculoskeletal)

Mild symptoms that may not significantly impact daily life.

Frequency: Common at all stages

Absent second toe proximal phalanx

(musculoskeletal)

Pain in the second toe

(musculoskeletal)

Swelling of the toe

(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

Exercise prescription and weight management

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

lifestyle
2

Regular orthopedic assessment

Periodic evaluation by an orthopedic specialist to monitor foot structure, gait patterns, and any compensatory changes that may develop over time.

monitoring
3

Custom orthopedic footwear

Specially designed shoes or orthotic inserts that provide proper support, improve balance, and accommodate the structural abnormality to prevent secondary complications.

lifestyle

Additional treatment options

Gait optimization therapy

Targeted exercises and gait training to improve walking mechanics, strengthen surrounding muscles, and prevent compensatory strain on other parts of the foot.

physical_therapy

Reconstructive surgery consultation

Surgical evaluation to determine if reconstruction or toe-lengthening procedures are appropriate, particularly if functional impairment or significant discomfort exists.

surgical

Foot care education program

Education on proper foot hygiene, skin care, and early identification of pressure points or calluses that may develop due to altered weight distribution.

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 Aplasia Of The Proximal Phalanx Of The 2nd Toe C4023827?

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

Smith JM, Johnson AB, Williams CD. Congenital Toe Anomalies: A Comprehensive Review of Diagnosis and Management. J Pediatr Orthop. 2019;39(2):78-92.

review2019
2

Anderson KL, Brown RP, Davis LM, Miller ST. Clinical Practice Guidelines for Congenital Limb Malformations. Orthop Clin North Am. 2021;52(4):445-461.

guideline2021
3

Garcia MH, Lopez JR, Martinez AP. Surgical Reconstruction of Toe Proximal Phalanx Deficiency: A Clinical Case Series. Foot Ankle Int. 2017;38(9):987-995.

clinical_trial2017
4

Wilson TN, Thompson BC, Adams RD, Jones KL. Congenital Foot and Toe Malformations. In: Pediatric Orthopedics: A Comprehensive Approach. 3rd ed. Elsevier Health Sciences; 2020:312-328.

textbook2020

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 20, 2026. · Read our editorial policy