Coronal and sagittal clefts in skeletal dysplasias

Area of Science:

• Medical imaging
• Skeletal biology
• Pediatric radiology

Background:

• Skeletal dysplasias are a diverse group of genetic disorders affecting bone and cartilage development.
• Accurate diagnosis of skeletal dysplasias is crucial for appropriate management and genetic counseling.
• Vertebral anomalies, including clefts, can be important diagnostic markers.

Purpose of the Study:

• To evaluate the diagnostic significance of coronal and sagittal vertebral clefts in identifying specific skeletal dysplasias.
• To determine the prevalence and location of vertebral clefts in various skeletal dysplasia diagnoses.

Main Methods:

• A retrospective review of cases from the International Skeletal Dysplasia Registry database.
• Analysis of spinal imaging (AP and lateral views) from 143 patients across 40 diagnoses.
• Focus on major groups including atelosteogenesis, chondrodysplasia punctata, dyssegmental dysplasia, Kniest dysplasia, and short rib polydactyly syndrome.

Main Results:

• Vertebral clefts were present in 40 diagnosed skeletal dysplasias, predominantly in infants (<1 year old, 94%).
• Clefts were most common in atelosteogenesis (88%), chondrodysplasia punctata (79%), and dyssegmental dysplasia (73%).
• Coronal clefts were more frequent than sagittal clefts, primarily located in the thoracolumbar spine.

Conclusions:

• Vertebral clefts are highly valuable diagnostic indicators for specific skeletal dysplasias, especially in young children.
• The findings confirm the diagnostic utility of vertebral clefts within established groups but did not identify new entities.
• Early identification of vertebral clefts aids in the diagnosis of pediatric skeletal disorders.