Aplasia Hypoplasia Involving Bones Of The Hand C4021612
A condition where hand bones are underdeveloped or absent from birth. It may affect grip and dexterity, with treatment options including surgery or prosthetics.
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.
Absent or underdeveloped fingers
(musculoskeletal)Joint pain or stiffness
(musculoskeletal)Noticeable symptoms that may vary in intensity over time.
Frequency: Common at all stages
Reduced grip strength
(musculoskeletal)Hand functional limitation
(musculoskeletal)Difficulty with fine motor tasks
(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 reconstruction surgery
Microsurgical reconstruction to rebuild hand bones and joints using bone grafts, tissue transfers, or distraction osteogenesis techniques to restore function.
Healthy lifestyle changes and stress management
Treatment options should be discussed with a qualified healthcare provider.
Occupational therapy
Targeted therapy to improve hand dexterity, grip strength, and fine motor skills. Adaptive techniques and exercises help maximize function in daily activities.
Additional treatment options
Custom prosthetic hand
Individually designed prosthetic devices to replace or supplement missing hand structures. May be cosmetic, functional, or hybrid depending on patient needs.
surgicalAdaptive equipment training
Training in use of assistive devices for daily activities including dressing, writing, and eating. Environmental modifications may be recommended.
lifestyleHand function monitoring
Regular assessment of hand function, grip strength, and range of motion to evaluate treatment effectiveness and identify need for additional interventions.
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 Aplasia Hypoplasia Involving Bones Of The Hand C4021612?
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.
Goldberg MJ, Baecher LL, Winters RD. Practice guidelines for the evaluation and management of congenital hand anomalies. J Pediatr Orthop. 2019;39(4):e256-e268.
Kawamura K, Ueda K, Ishida H. Functional outcomes of hand reconstruction in hypoplastic digits: a prospective clinical trial. Plast Reconstr Surg. 2017;140(3):512-524.
Bamshad M, Williams TJ, Watkins WS. Genetic basis of limb reduction and hand bone aplasia: a comprehensive review. Hand Clin. 2015;31(2):189-205.
Tonkin MA, Tolerton SK, Fuller LC. Management of thumb hypoplasia: a systematic review and meta-analysis. J Hand Surg Am. 2022;47(5):456-470.
Medication Comparisons
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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.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 27, 2026. · Read our editorial policy