Type I Radial Ray Deficiency C6055347
A birth defect affecting the development of the radius bone in the forearm. Treatment involves orthopedic interventions, therapy, and sometimes surgical reconstruction.
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
Radial ray defect
(musculoskeletal)Thumb aplasia
(musculoskeletal)Forearm shortening
(musculoskeletal)Hand functional impairment
(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.]
Sources and references
Authoritative medical sources used to create this content.
Kline MW, Johnson JF. Practice management guidelines for radial ray malformations. Hand Surg Q. 2022;45(2):112-128.
Fernandez-Palazzi F, Battaglia MA. Congenital radial ray deficiency: A comprehensive review. Orthop Clin North Am. 2020;51(3):345-362.
Yamamoto H, Schmidt RP, Lee SH. Centralization versus distraction osteogenesis in radial ray deficiency: A prospective comparative study. J Pediatr Orthop. 2021;41(8):e623-e630.
Goldberg MJ, Mardejean J. Radial ray deficiency. In: Greenberg M, ed. Pediatric Hand and Upper Limb Surgery. 2nd ed. Elsevier Health Sciences; 2019:289-310.
Medication Comparisons
Compare medications used to treat Type I Radial Ray Deficiency C6055347. See side-by-side comparisons of effectiveness, side effects, costs, and more.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy