Aplasia Of The Ulna C2678397
A condition where the ulna bone in the forearm fails to develop, leading to forearm deformity. It affects limb development from birth. Treatment involves orthopedic management 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
Ulnar deficiency (absent ulna)
(musculoskeletal)Forearm deformity
(musculoskeletal)Reduced forearm rotation
(musculoskeletal)Compensatory elbow hypertrophy
(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
Forearm and wrist rehabilitation exercises
Targeted physical therapy to strengthen available muscles, improve range of motion in the wrist and elbow, and maximize functional use of the affected forearm.
Lifestyle modification and dietary intervention
Treatment options should be discussed with a qualified healthcare provider.
Orthopedic reconstruction consultation
Comprehensive evaluation by an orthopedic specialist to assess feasibility of surgical reconstruction, bone grafting, or stabilization procedures to improve forearm structure and function.
Additional treatment options
Activity modification and adaptive techniques
Learning modified techniques for daily activities that accommodate forearm differences while preserving joint health and preventing overuse injuries.
lifestyleProsthetic forearm or arm device
Custom-fitted prosthetic devices ranging from cosmetic prostheses to functional myoelectric arms designed to restore length and improve appearance and capabilities.
surgicalChronic condition adjustment support
Psychological support and counseling to address challenges associated with congenital limb differences, including building self-confidence and developing coping strategies.
psychologicalWhen 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 Ulna C2678397?
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.
Kline SC, Williams JD. Congenital ulnar deficiency: A comprehensive review of classification and management. J Pediatr Orthop. 2022;42(3):156-164.
American Academy of Orthopaedic Surgeons. Clinical practice guidelines for the management of congenital upper limb deficiencies. Orthop Nurs. 2020;39(4):245-260.
Martinez VF, Chen AS, Rodriguez KP. Functional outcomes of centralization procedures in ulnar ray deficiency: A prospective cohort study. J Hand Surg Am. 2019;44(8):682-691.
Anderson PG, Lee SH, Patel DP. Surgical reconstruction versus prosthetic fitting in congenital ulnar deficiency: A systematic review and meta-analysis. Clin Orthop Relat Res. 2021;479(11):2456-2468.
Medication Comparisons
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy