Short answer · Medically reviewed summary · Last updated: 2026-04-07
Klippel-Feil syndrome is primarily known as congenital cervical vertebral fusion, characterized by the failure of normal segmentation of the cervical spine. While Klippel-Feil syndrome is the universally accepted clinical term, it is historically referred to as "cervical fusion syndrome" or "congenital synostosis of the cervical vertebrae" in older medical literature. Why does Klippel-Feil syndrome have multiple names? In the early 20th century, medical conditions were often named after the physicians who first described them.
Klippel-Feil Syndrome synonyms
Other names for Klippel-Feil Syndrome: synonyms, acronyms and related terms used by doctors and patients.
Klippel-Feil syndrome is primarily known as congenital cervical vertebral fusion, characterized by the failure of normal segmentation of the cervical spine. While Klippel-Feil syndrome is the universally accepted clinical term, it is historically referred to as "cervical fusion syndrome" or "congenital synostosis of the cervical vertebrae" in older medical literature.
Why does Klippel-Feil syndrome have multiple names?
In the early 20th century, medical conditions were often named after the physicians who first described them. Maurice Klippel and André Feil published the seminal description of Klippel-Feil syndrome in 1912, leading to the eponym that remains the standard today. Over time, as clinical understanding evolved, researchers moved toward descriptive anatomical terms like "congenital cervical vertebral fusion" to provide more clarity regarding the physical manifestations of the condition. Today, Klippel-Feil syndrome is the preferred term in clinical settings, though you may encounter legacy terms in archived patient files or older research databases.
What are the common synonyms and historical classifications?
When searching medical databases or reviewing historical health records, you may encounter several terms used to describe Klippel-Feil syndrome. Understanding these synonyms is vital for navigating research across different international medical traditions:
- Cervical vertebral fusion syndrome
- Congenital synostosis of the cervical vertebrae
- Klippel-Feil sequence (sometimes used when describing the condition as part of a broader pattern of anomalies)
- Brevicollis (an archaic term referring specifically to the "short neck" appearance associated with the syndrome)
- Cervical fusion anomaly
How is the condition classified in official medical databases?
Official medical classification systems provide standardized codes to ensure consistent diagnosis and billing globally. In the International Classification of Diseases (ICD-10/11), Klippel-Feil syndrome is categorized under congenital malformations of the musculoskeletal system. In the Online Mendelian Inheritance in Man (OMIM) database, which catalogs genetic conditions, it is indexed as #118100. Furthermore, the Orphanet database (ORPHA:480) recognizes it as a rare disease with a prevalence estimated at approximately 1 in 40,000 to 1 in 42,000 live births. Across our DiseaseMaps.org community, 360 people with Klippel-Feil syndrome have connected to share their unique diagnostic journeys and lived experiences.
Which term should patients use?
While various synonyms exist, medical professionals across the globe now almost exclusively use the term Klippel-Feil syndrome. Using the official name during consultations, when requesting medical records, or when searching for clinical trials will ensure you receive the most accurate and up-to-date information. If you encounter older documentation using terms like "brevicollis," it is appropriate to clarify with your physician that these refer to the same underlying skeletal anomaly.
Next steps
- Consult a spinal surgeon or a clinical geneticist to discuss your specific anatomical findings and any associated risks.
- Request copies of your medical records using the term "Klippel-Feil syndrome" to ensure consistency across all specialist departments.
- Connect with the 360 members of the DiseaseMaps.org community to share experiences and learn how others manage their diagnosis.
- Review your imaging reports (MRI/CT scans) with a radiologist to verify the specific segments involved in the fusion.
Medical disclaimer: This information is for educational purposes only and does not constitute professional medical advice, diagnosis, or treatment; always seek the advice of your physician with any questions regarding a medical condition.
References
- NIH Genetic and Rare Diseases Information Center (GARD): Klippel-Feil syndrome.
- Orphanet: Klippel-Feil syndrome (ORPHA:480).
- OMIM (Online Mendelian Inheritance in Man): #118100 Klippel-Feil syndrome 1.
- National Library of Medicine (PubMed): Clinical literature on congenital cervical vertebral fusion.
