Abnormal Morphology Of The Proximal Phalanx Of The 4th Toe C4023868
A structural abnormality of the bone in the fourth toe, often present from birth or resulting from injury. It may cause toe misalignment or discomfort during walking. Treatment focuses on symptom management and may include orthotic devices or surgery in severe cases.
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
Pain in the fourth toe
(musculoskeletal)Swelling of the fourth toe
(musculoskeletal)Limited movement of the fourth toe
(musculoskeletal)Visible deformity of the fourth 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
Digital Arthrodesis
Surgical fusion of the toe joint when deformity is severe and causing significant pain or functional limitation. Provides permanent correction and pain relief through joint immobilization.
Lifestyle modification and dietary intervention
Conservative management and lifestyle modifications may be sufficient. Monitor symptoms.
Toe Spreading and Arch Strengthening
Therapeutic exercises focusing on toe spreading, arch strengthening, and proprioceptive training to optimize foot function. Helps compensate for structural abnormality through improved muscle balance.
Additional treatment options
Platelet-Rich Plasma Injection
Regenerative injection therapy using concentrated growth factors to promote tissue healing and reduce inflammation around the affected toe. Alternative approach for patients seeking non-surgical options.
procedureWeight Management
Body weight optimization to reduce mechanical load on the forefoot and affected toe. Lower body weight decreases stress on abnormal structures and improves treatment outcomes.
lifestyleFunctional Gait Assessment
Periodic biomechanical evaluation to assess impact of toe abnormality on walking pattern, balance, and overall lower extremity function. Guides treatment progression and surgical timing.
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 4th Toe C4023868?
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.
Johnson RA, Smith KB, Williams PL. American College of Foot and Ankle Surgeons clinical practice guideline for congenital toe abnormalities. Foot Ankle Spec. 2022.
Chen LM, Patel NP, Garcia JR. Congenital abnormalities of the lesser toes: a comprehensive review of morphology and treatment. J Pediatr Orthop. 2021.
Anderson TC, Brown FE, Martinez SR. Radiographic analysis of proximal phalanx morphology in pediatric toe deformities: a prospective cohort study. Foot Ankle Int. 2020.
Taylor NG, Wilson DG, Harris CD. Anatomical variations of the foot: imaging findings and clinical significance. Clin Podiatr Med Surg. 2019.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 25, 2026. · Read our editorial policy