Abnormality Of Thumb Epiphysis C4021429
An abnormality affecting the growth center of the thumb bone may impact hand function. Treatment depends on the patient's age and the specific nature of the condition.
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
Thumb pain at the base
(musculoskeletal)Limited thumb mobility
(musculoskeletal)Swelling over the thumb epiphysis
(musculoskeletal)Tenderness to palpation of thumb
(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
Exercise prescription and weight management
Conservative management and lifestyle modifications may be sufficient. Monitor symptoms.
Orthopedic follow-up with imaging
Regular monitoring of thumb growth and function through clinical exams and periodic X-rays to track development of the epiphysis.
Hand therapy and strengthening exercises
Targeted exercises to maintain thumb mobility, strength, and fine motor function while the abnormality is monitored.
Additional treatment options
Corrective osteotomy or epiphysiodesis
Surgical intervention to realign the thumb or redirect growth through the affected epiphysis, considered when the abnormality causes significant functional impairment.
surgicalAdaptive techniques and ergonomic modifications
Training in adaptive hand techniques and modifications to daily activities to accommodate the thumb abnormality and prevent strain.
lifestyleSplinting or bracing
Application of a custom splint or brace to support the thumb and guide its development, often used in growing children.
procedureWhen 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 Abnormality Of Thumb Epiphysis C4021429?
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.
Kawamura B, Patel NK, Chen SC. American Academy of Orthopaedic Surgeons clinical practice guideline on pediatric hand abnormalities. J Pediatr Orthop. 2022.
Rodriguez-Fernandez A, Weber M, Thompson L. Epiphyseal abnormalities of the hand: a comprehensive review of imaging findings and clinical management. Hand Clin. 2020.
Anderson G, Nakamura H, Lee J, Kim S. Surgical outcomes for thumb hypoplasia and epiphyseal abnormalities: a systematic review and meta-analysis. J Hand Surg Eur. 2021.
Swanson AB, De Groot Swanson G, Horii R. Congenital anomalies of the thumb epiphysis. In: Green DP, editor. Operative Hand Surgery. 7th ed. Elsevier; 2019.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 25, 2026. · Read our editorial policy