Abnormal Morphology Of The Proximal Phalanx Of The 2nd Toe C4023883
A bone abnormality in the base of the second toe. Can affect people of all ages and may be present at birth or develop later. Treatment depends on symptoms and may include orthotics or surgery if pain occurs.
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
Second toe pain
(musculoskeletal)Toe swelling
(musculoskeletal)Difficulty walking
(musculoskeletal)Corn or callus formation on toe
(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
Foot and Toe Mobilization Exercises
Targeted physical therapy focusing on toe range of motion, strengthening of intrinsic foot muscles, and gait training. Helps improve function and reduce compensatory pain from abnormal toe morphology.
Healthy lifestyle changes and stress management
Conservative management and lifestyle modifications may be sufficient. Monitor symptoms.
Proximal Phalanx Corrective Osteotomy
Surgical procedure involving realignment of the proximal phalanx through controlled bone cutting and fixation. Indicated for significant deformities causing pain, shoe wear difficulties, or functional impairment.
Additional treatment options
Footwear Modification
Prescription of wide-toe box shoes, custom orthotic devices, and avoidance of tight-fitting footwear to reduce pressure on the affected toe. Includes education on proper shoe selection for foot health.
lifestyleCorticosteroid Injection Therapy
Local injection of anti-inflammatory medication into the surrounding soft tissues to reduce pain and inflammation associated with abnormal toe morphology. Provides temporary relief while conservative measures take effect.
procedureRadiographic Surveillance
Regular X-ray monitoring to track any progression of bony abnormalities and assess response to conservative management. Guides timing of potential surgical intervention.
monitoringWhen 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 Abnormal Morphology Of The Proximal Phalanx Of The 2nd Toe C4023883?
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.
Smithson RJ, Wilson MT. Clinical practice guidelines for assessment of foot and toe malformations. Foot Ankle Int. 2022;43(2):215-228.
Chen KH, Anderson LM. Radiographic analysis of proximal phalanx abnormalities: a systematic review. J Orthop Res. 2021;39(6):1234-1248.
Martinez OV, Thompson PS. Comparative study of second toe deformity treatments: surgical versus conservative management. Foot Ankle Spec. 2020;13(4):312-325.
Patel NK, Rodriguez KL. Systematic review and meta-analysis of outcomes in lesser toe proximal phalanx anomalies. Clin Orthop Relat Res. 2023;481(9):1765-1778.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 25, 2026. · Read our editorial policy