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Klippel-Feil syndrome
MONDO:0001029A congenital, musculoskeletal condition characterized by the fusion of at least two vertebrae of the neck. Common symptoms include a short neck, low hairline at the back of the head, and restricted mobility of the upper spine. This syndrome can cause chronic headaches as well as pain in both the neck and the back.Other features may involve various other body parts or systems. Sometimes, KFS occurs as a feature of another disorder or syndrome, such as Wildervanck syndrome or hemifacial microsomia. In these cases, people have the features of both KFS and the additional disorder. KFS may be caused by mutations in the GDF6 or GDF3 gene and inherited in an autosomal dominant manner; or, it may be caused by mutations in the MEOX1 gene and inherited in an autosomal recessive manner. Treatment is symptomatic and may include medications, surgery, and/or physical therapy.
Also known as: Klippel-Feil Sequence, Klippel Feil syndrome, Klippel-Feil and Turner syndrome, Klippel-Feil deformity, deafness and facial asymmetry, autosomal dominant Klippel-Feil syndrome, cervical vertebral fusion, congenital dystrophia brevicollis, congenital synostosis of cervical vertebrae
14 clinical trials for this condition and its sub-types.
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Broader categories
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New titanium cage could improve neck surgery outcomes
Disease control OngoingThis study tests a new titanium cage used in spinal fusion surgery for people with degenerative disc disease in the neck. Fifty participants will receive the device and be followed for up to 24 months to see if the bones fuse properly and if pain and function improve. It is a sma…
Sponsor: Corewell Health East • Aim: Disease control
Last updated Jun 27, 2026 12:02 UTC
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New device aims to strengthen neck fusion surgery
Disease control OngoingThis study tests a device called PCSS used alongside standard neck fusion surgery to treat degenerative disc disease in the neck. About 236 adults aged 18-80 who need surgery on three neck levels will be enrolled. The goal is to see if the device helps bones fuse better and safel…
Sponsor: Providence Medical Technology, Inc. • Aim: Disease control
Last updated Jun 27, 2026 07:56 UTC
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New study aims to make anesthesia safer for kids with rare neck condition
Knowledge-focused OngoingThis study looks back at medical records of 300 children with Klippel-Feil syndrome who had surgery at Boston Children's Hospital. The goal is to understand how often they have difficult airways during anesthesia and what neck abnormalities cause problems. The findings may help a…
Sponsor: Boston Children's Hospital • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:23 UTC
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Spine surgery safety under the microscope: new study watches Real-World results
Knowledge-focused By invitation onlyThis study follows 150 adults undergoing back-of-the-neck and upper spine surgery with metal screws and rods (posterior fixation) for injuries, tumors, or worn-out discs. Researchers track complications, X-ray results, and patient-reported pain over time. The goal is to better un…
Sponsor: NuVasive • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:06 UTC