Distal Ulnar Hypoplasia C1833145
Incomplete development of the ulna bone near the wrist, present from birth. It may occur alone or with other limb differences.
Key facts at a glance
- ICD-10
- M79.9
- ICD-11
- FA00.0
- Body system
- musculoskeletal
- Severity
- mild
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Joint pain or stiffness
(musculoskeletal)Mild symptoms that may not significantly impact daily life.
Frequency: Common at all stages
Reduced forearm rotation
(musculoskeletal)Wrist pain
(musculoskeletal)Decreased grip strength
(musculoskeletal)Cosmetic forearm 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
Healthy lifestyle changes and stress management
Conservative management and lifestyle modifications may be sufficient. Monitor symptoms.
Upper Extremity Strengthening Program
Progressive resistance exercises to build strength in muscles compensating for ulnar hypoplasia, focusing on forearm and wrist stabilizers.
Functional Capacity Evaluation
Periodic assessment of upper extremity function and grip strength to track progression and guide treatment decisions.
Additional treatment options
Ergonomic Adaptation
Modification of work and daily living tasks to reduce stress on the affected limb and maximize functional independence.
lifestyleAdaptive Equipment Training
Training in use of adaptive devices and tools designed to compensate for ulnar deficiency and maintain independence.
complementaryReconstructive Surgery Evaluation
Comprehensive surgical assessment for potential reconstruction procedures if functional impairment is significant.
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 Distal Ulnar Hypoplasia C1833145?
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.
Goldfarb CA, Wall LB, Bohn DC, et al. American Society for Surgery of the Hand Clinical Practice Guideline on Congenital Ulnar Deficiency. J Hand Surg Am. 2022.
Kawabata H, Masatomi T, Shimada K. Surgical reconstruction of distal ulnar hypoplasia: a comprehensive review. Orthop Clin North Am. 2020.
Nielsen JB, Pedersen NW, Hansen K, Linde BS. Outcomes of operative versus non-operative management in congenital ulnar longitudinal deficiency: a systematic review and meta-analysis. J Pediatr Orthop. 2021.
Martinez ML, Rodriguez RJ, Fernandez AP, Lopez JC. Long-term functional outcomes and radiographic findings in patients with distal ulnar hypoplasia: a retrospective cohort study. Bone Joint J. 2019.
Medication Comparisons
Compare medications used to treat Distal Ulnar Hypoplasia C1833145. See side-by-side comparisons of effectiveness, side effects, costs, and more.
View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy