UCSD Musculoskeletal Radiology

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Normal variants

Cervical spine

 

Occipital Atlas joint

   
Occipital vertebra 56M      
     
Basisphenoid basiocciput synchondrosis 41F            
Atlas    
Ponticulus posticus / arcuate foramen

 

 
   
Arcuate foramen 58M  
     
Os terminalis 25M      
     
Accessory ossicle of the anterior arch of the atlas    
     
Accessory ossicle of the anterior arch of atlas        
     
Occipitalization of the left transverse process of C1 23F                                
     
Accessory ossicle of the C1 transverse process    
     
Accessory ossicles of the C1 transverse processes    

C1-2

   
     
C1-2 partial fusion posteriorly  
     
Pseudoarthrosis C1-2 spinous process    

Axis

   
     
Normal vascular groove of the posterior arch of C2  

C3-7

   
     
Anomalous articulation between C5-6 lateral masses          
     
Os cervicalis 22M    
     
Os cervicalis 23M    
     
Os cervicalis 20M    

Adjacent tissues

   
Tracheal diverticulum       
     
Triticeous cartilage within the larynx 55F    
     
Hair artifact      
     
Hair artifact      
     
Hair artifact        
     
Hair braids 63F    
     
Shirt collar stiffeners 53M