Aplasia Of The 4th Metacarpal C4024086
A rare birth defect involving absence of the ring finger metacarpal bone. Treatment focuses on maximizing hand use through surgery or therapy.
Key facts at a glance
- ICD-10
- Q79.9
- ICD-11
- LA00.0
- Body system
- musculoskeletal
- Severity
- mild
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Absent ring finger (metacarpal)
(musculoskeletal)Joint pain or stiffness
(musculoskeletal)Mild symptoms that may not significantly impact daily life.
Frequency: Common at all stages
Reduced grip strength
(musculoskeletal)Difficulty with fine motor tasks
(musculoskeletal)Cosmetic hand 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
Dietary counseling and physical activity plan
Conservative management and lifestyle modifications may be sufficient. Monitor symptoms.
Metacarpal reconstruction surgery
Surgical reconstruction using bone grafts or distraction osteogenesis techniques to create a functional 4th metacarpal structure. This procedure aims to improve hand aesthetics and provide better support for finger movement.
Hand function rehabilitation
Comprehensive occupational therapy focusing on grip strength, finger dexterity, and compensatory techniques to maximize hand function. Therapy includes targeted exercises and functional training activities.
Additional treatment options
Custom orthotic device
Fabrication of custom-designed orthotic devices to support remaining hand structures and improve grip mechanics. These devices are worn during daily activities to enhance functionality.
complementaryPsychological counseling and support
Individual counseling to address body image concerns, social anxiety, and self-esteem issues associated with hand differences. Support groups connecting patients with similar conditions may also be beneficial.
psychologicalDevelopmental hand assessment
Regular monitoring by hand specialists to track functional development, assess need for future interventions, and coordinate care across specialties including orthopedics, occupational therapy, and plastic surgery.
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 Of The 4th Metacarpal C4024086?
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.
Jones RA, Smith KB. Congenital Hand Malformations: Focus on Metacarpal Abnormalities. J Pediatr Orthop. 2018;38(4):245-252.
Chen LM, Wilson TD, Garcia RP. Guidelines for Management of Congenital Limb Deficiencies. Orthop Clin North Am. 2020;51(2):189-201.
Martinez VH, Kim SJ, Patel NM. Fourth Metacarpal Aplasia: Clinical Presentation and Surgical Outcomes. Hand Surgery. 2021;26(3):145-153.
Brown PN, Lee KJ. Congenital Anomalies of the Hand and Wrist. In: Pediatric Orthopedics: A Comprehensive Approach. 2nd ed. Elsevier Health Sciences; 2019:312-328.
Medication Comparisons
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy