診斷放射學/肌肉骨骼影像學/正常徵象

A. 關節處骨化的順序（例如，肘部）

B.  Physiologic radiolucencies

C.  Bone island (enostosis)

D.  Vascular channels 
   1.  Nutrient canal in phalanx or long bone cortex 
   2.  Vertebral body 
   3.  Scapula 
   4.  Iliac bone

E.  Normal sulci 
   1.  Preauricular sulcus (paraglenoid fossa) 
   2.  Rhomboid fossa

F.  Supracondylar process

G.  Dorsal defect of patella

H.  Epiphyseal ossification from multiple centers (e.g., bipartite patella)

I.  Irregular epiphyseal ossification (e.g., Meyer dysplasia)

J.  Periosteal reaction of infancy

K.  Physiologic bowing

L.  Transverse (growth) line

M.  Vacuum joint