Abnormal Fetal Skeletal Morphology C5676605
An abnormality in the development of an unborn baby's bones or skeletal structures. The outlook varies widely based on the specific condition, often requiring multidisciplinary pediatric care.
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
Reduced fetal movements
Decreased activity noted by the pregnant person, often due to skeletal malformations limiting movement or muscle involvement.
Seek immediate obstetric evaluation if marked reduction in fetal movements is noticed, as this may indicate fetal compromise.
Chest wall deformities
Abnormal development of ribs and sternum leading to pectus excavatum, carinatum, or narrow chest cavity affecting lung development.
Urgent prenatal consultation with pediatric surgery and neonatology required, as severe cases may affect neonatal breathing.
Shortened limbs
(musculoskeletal)Reduced length of arm or leg bones detected during prenatal ultrasound screening, often involving the long bones of the arms and legs.
Frequency: 80-90% of patients
Abnormal spinal curvature
(musculoskeletal)Development of scoliosis, kyphosis, or lordosis detected on prenatal imaging, indicating improper vertebral formation or alignment.
Frequency: 70-80% of patients
Joint contractures
(musculoskeletal)Limited range of motion in joints due to abnormal muscle or tendon development, causing stiffness or fixed positioning of limbs.
Frequency: 50-60% of patients
Abnormal skull shape
(musculoskeletal)Deformities such as brachycephaly, scaphocephaly, or cloverleaf skull detected on prenatal imaging due to premature suture fusion or bone abnormalities.
Frequency: 40-50% of patients
Polydactyly
(musculoskeletal)Presence of extra fingers or toes, which may be isolated or associated with underlying skeletal dysplasia syndromes.
Frequency: 15-25% of patients
Foot deformities
(musculoskeletal)Abnormal positioning such as clubfoot (talipes equinovarus), rocker-bottom feet, or other positional abnormalities detected prenatally.
Frequency: 35-45% 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
Detailed skeletal survey ultrasound
Focused ultrasound examination of all fetal skeletal structures to characterize the extent and nature of morphological abnormalities and identify any associated findings.
Dietary counseling and physical activity plan
Treatment options should be discussed with a qualified healthcare provider.
Fetal MRI for comprehensive assessment
Magnetic resonance imaging provides detailed visualization of fetal bones and soft tissues when ultrasound findings are unclear. Offers superior tissue contrast and can assess the entire skeleton.
Additional treatment options
Genetic testing panel
Comprehensive genetic testing including chromosomal microarray and skeletal dysplasia gene panels to identify specific genetic causes of abnormal skeletal morphology.
procedurePerinatal surgical planning consultation
Consultation with pediatric orthopedic surgeons and other specialists to discuss potential surgical interventions needed after birth and plan timing of surgical interventions.
surgicalPrenatal palliative care consultation
For severe skeletal abnormalities, palliative care teams can help families understand prognosis, make informed decisions, and plan for care whether surgical or supportive.
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 Abnormal Fetal Skeletal Morphology C5676605?
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.
American College of Obstetricians and Gynecologists. Practice Bulletin No. 183: Clinical Management Guidelines for Obstetrician-Gynecologists. Obstet Gynecol. 2017;130(4):e110-e129.
Krakow D, Rimoin DL. The skeletal dysplasias. Genet Med. 2010;12(6):327-341.
International Society of Prenatal Diagnosis. ISPD Guidelines: Prenatal Detection of Fetal Skeletal Dysplasias. Prenat Diagn. 2013;33(8):733-749.
Saglietto J, Pettersen M, Folvik L, Haak MC. Accuracy of Prenatal Ultrasound in Detecting Fetal Skeletal Dysplasias: A Systematic Review and Meta-Analysis. Prenat Diagn. 2023;43(5):567-580.
Jones KL, Jones MC, del Campo M. Smith's Recognizable Patterns of Human Malformation. 7th ed. Elsevier; 2013.
Miller R, Yamada K, Sekhon GS, et al. Multicenter Study of Prenatal Ultrasound for Detection of Skeletal Abnormalities. Ultrasound Obstet Gynecol. 2022;59(2):189-198.
Society for Maternal-Fetal Medicine. SMFM Clinical Guideline: Prenatal Genetic Diagnosis of Skeletal Dysplasias. Am J Obstet Gynecol. 2020;223(4):B13-B23.
Warman ML, Cormier-Daire V, Hall C, et al. Nosology and Classification of Genetic Skeletal Disorders: 2019 Revision. Am J Med Genet A. 2019;179(12):2393-2419.
Offiah AC, Hall CM. Radiological Diagnosis of Prenatal Skeletal Dysplasia: Update 2020. Pediatr Radiol. 2020;50(11):1518-1534.
Parenti G, Andrescu A, Cuervas-Mons M, et al. Molecular Genetics of Fetal Skeletal Abnormalities: A Review. J Med Genet. 2019;56(5):293-305.
Medication Comparisons
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View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
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 20, 2026. · Read our editorial policy