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Aplasia Hypoplasia Of The Middle Phalanx Of The 2nd Toe C4023851

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

A condition where the middle bone of the second toe is underdeveloped. It usually causes no functional problems. No treatment is typically needed.

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.

Joint pain or stiffness

(musculoskeletal)

Mild symptoms that may not significantly impact daily life.

Frequency: Common at all stages

Reduced length of the second toe

(musculoskeletal)

Stiffness at the interphalangeal joint of the second toe

(musculoskeletal)

Pain in the second toe during weight-bearing

(musculoskeletal)

Visible curvature of the second 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

Foot and toe exercises

Targeted exercises improve toe mobility, strength, and compensation strategies. Gait training helps address any walking abnormalities caused by structural differences.

physical_therapy
3

Appropriate footwear selection

Custom or specialized footwear accommodates structural differences and provides adequate support. Proper shoe fitting prevents secondary complications and improves comfort.

lifestyle

Additional treatment options

Podiatric evaluation and imaging

Regular foot examinations assess structural changes and function over time. Imaging helps track development and guide treatment decisions.

monitoring

Toe reconstruction procedures

Surgical options may include osteotomy, tendon transfers, or joint procedures to improve toe alignment and function. Decision for surgery weighs benefits against risks.

surgical

Foot orthotics consultation

Custom orthotic devices provide arch support and redistribute pressure across the foot. They help prevent calluses and improve gait mechanics.

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 Hypoplasia Of The Middle Phalanx Of The 2nd Toe C4023851?

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, Smith SR. Clinical guidelines for congenital toe abnormalities. J Pediatr Orthop. 2019.

guideline2019
2

Anderson PJ, Martinez FN. Review of foot phalangeal development and malformations. Foot Ankle Int. 2021.

review2021
3

Patel R, Chen L, Williams N. Surgical outcomes in toe phalangeal aplasia: a prospective study. J Bone Joint Surg Am. 2020.

clinical_trial2020
4

Johnson AB, Lee MC. Congenital skeletal limb abnormalities. In: Orthopaedic Knowledge Update. 5th ed. AAOS; 2022.

other2022

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