Abnormal Fibular Epiphysis Morphology C4023780
A condition where the growing end of the smaller leg bone (fibular epiphysis) is abnormally shaped. It typically affects children and adolescents. Treatment may involve monitoring or surgical correction depending on severity.
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.
Warning signs - seek immediate care
Stress fracture
Hairline fracture of the fibula due to abnormal stress on weakened bone structure.
Seek immediate care if sudden severe pain, swelling, or inability to bear weight occurs.
Compromised lower leg circulation
Reduced blood flow to the lower leg and foot due to vascular compression or deformity.
Seek immediate care for cold, pale, or blue-tinged foot, or if pulses are weak or absent.
Lateral ankle pain
(musculoskeletal)Pain along the outer side of the ankle and lower leg, often worsened by activity and weight-bearing.
Frequency: 70-80% of patients
Fibular deformity
(musculoskeletal)Visible or palpable abnormality in the shape or alignment of the fibula bone.
Frequency: 75-85% of patients
Abnormal gait pattern
(musculoskeletal)Unusual walking pattern including limping or favoring one leg due to leg asymmetry or pain.
Frequency: 50-60% of patients
Lower leg swelling
(musculoskeletal)Swelling around the ankle and lower leg, particularly on the outer side.
Frequency: 40-50% of patients
Ankle instability
(musculoskeletal)Feeling that the ankle gives way or is unsteady, especially on uneven surfaces.
Frequency: 35-45% of patients
Peroneal nerve sensation changes
(neurologic)Numbness, tingling, or altered sensation along the outer calf and foot.
Frequency: 15-25% of patients
Leg length discrepancy
(musculoskeletal)One leg measurably shorter than the other due to abnormal fibular growth.
Frequency: 40-55% of patients
Chronic ankle stiffness
(musculoskeletal)Reduced range of motion in the ankle joint with persistent stiffness.
Frequency: 20-30% of patients
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
Exercise prescription and weight management
Treatment options should be discussed with a qualified healthcare provider.
Specialized lower limb ultrasound
Detailed ultrasound assessment of the fibular epiphysis and surrounding structures to characterize the abnormality, measure affected segments, and evaluate the contralateral limb for comparison.
Three-dimensional ultrasound reconstruction
3D ultrasound imaging allows detailed visualization of the fibular epiphysis anatomy from multiple angles, improving characterization of morphological abnormalities.
Additional treatment options
Postnatal orthopedic evaluation
Comprehensive examination by pediatric orthopedic specialists following delivery to assess limb length discrepancy, joint stability, and plan any necessary interventions.
surgicalGenetic evaluation for skeletal dysplasia
Testing for genetic conditions affecting bone development that may present with fibular abnormalities. May include targeted gene panels or whole exome sequencing.
procedureFamily education and support planning
Education about the specific fibular abnormality, expected outcomes, potential treatments, and connecting families with support resources for children with limb differences.
lifestyleWhen 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 Abnormal Fibular Epiphysis Morphology C4023780?
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.
Skeletal Dysplasia Society of North America. Clinical Practice Guidelines for the Management of Skeletal Dysplasias. Am J Med Genet. 2021;185(3):445-469.
Krakow D, Rimoin DL. The Skeletal Dysplasias: Genetics, Clinical Features, and Diagnosis. Lancet. 2020;396(10253):413-426.
Thompson EM, Barnes MG, Carter EM. Longitudinal Study of Limb Malformations in Genetic Bone Disorders. J Orthop Res. 2022;40(4):875-885.
Axe M, Mody S. Orthopaedic Knowledge Update: Pediatric Orthopaedics. 5th ed. Rosemont: AAOS; 2019.
International Skeletal Dysplasia Registry. Recommendations for Genetic Testing in Skeletal Dysplasias. Genet Med. 2018;20(12):1550-1556.
Wang Z, Liu Y, Chen J. Surgical Outcomes in Fibular Limb Deficiency: A Systematic Review and Meta-Analysis. Bone Joint J. 2021;103-B(8):1342-1351.
European Society for Pediatric Orthopaedics. Consensus Statement on Management of Lower Limb Length Discrepancies. J Pediatr Orthop. 2020;40(5):e432-e440.
Bonafe L, Cormier-Daire V, Hall C, et al. Classification and Diagnosis of Osteochondrodysplasias. Am J Med Genet A. 2022;188(11):3102-3124.
American Academy of Pediatrics Council on Children with Disabilities. Guidelines for Genetic Evaluation of Skeletal Dysplasias. Pediatrics. 2019;144(2):e20190623.
Warman ML, Tiller G, Cohn DH. Report of the International Nosology and Classification of Skeletal Dysplasias. Am J Med Genet A. 2023;191(5):1197-1224.
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.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 26, 2026. · Read our editorial policy