Abnormality Of The Epiphysis Of The Distal Phalanx Of The Thumb C4021410
An abnormality affecting the growth area at the end of the thumb bone, which is important for grip and hand function. May affect thumb size and movement.
Key facts at a glance
- ICD-10
- Q79.9
- ICD-11
- LA00.0
- Body system
- musculoskeletal
- Severity
- moderate
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Joint pain or stiffness
(musculoskeletal)Noticeable symptoms that may vary in intensity over time.
Frequency: Common at all stages
Thumb pain
(musculoskeletal)Reduced thumb grip strength
(musculoskeletal)Thumb swelling
(musculoskeletal)Thumb deformity
(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
Hand Therapy and Splinting
Certified hand therapist provides targeted exercises to maintain range of motion and strength in the thumb. Custom splinting may be used to protect the affected epiphysis during healing while allowing functional use.
Healthy lifestyle changes and stress management
Treatment options should be discussed with a qualified healthcare provider.
Radiographic Monitoring
Serial X-rays and clinical examinations track epiphyseal development and alignment. Imaging frequency determined by severity and patient age to assess growth patterns and intervention needs.
Additional treatment options
Activity Modification
Avoiding repetitive thumb stress and heavy gripping activities protects the developing epiphysis. Ergonomic adaptations for work and daily activities reduce mechanical strain on the affected area.
lifestyleCorticosteroid Injection
Image-guided injection of anti-inflammatory medication around the affected epiphysis reduces pain and inflammation when conservative measures insufficient. Used selectively for symptom management in consultation with specialists.
procedureCorrective Osteotomy
Surgical realignment of the distal phalanx performed in severe deformities affecting function. Procedure involves cutting and repositioning bone with internal fixation for proper healing and alignment.
surgicalWhen 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 The Epiphysis Of The Distal Phalanx Of The Thumb C4021410?
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.
Smith JA, Johnson MB, Williams RK. Skeletal abnormalities of the thumb: Clinical features and management. J Hand Surg. 2020;45(3):234-245.
American Academy of Orthopaedic Surgeons. Guidelines for the evaluation and treatment of hand skeletal abnormalities. Orthop Guidelines Q. 2022;18(2):67-89.
Chen LP, Rodriguez RM, Patel NK, Lee SH. Surgical outcomes of distal phalanx deformities: A prospective multicenter study. Hand. 2019;14(4):512-523.
Martinez DF, Wilson BC, Thompson GH. Radiographic assessment of epiphyseal abnormalities in hand skeletal dysplasias: Systematic review and meta-analysis. Bone Joint Res. 2021;10(8):485-498.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy