Category: Orthopaedics

OTA – Acronym

Orthopedic Trauma Association

$Anterior wedge compression fracture – Xray$

Anterior wedge compression fracture – Xray

Anterior wedge compression fracture of vertebra (Click on image for an enlarged view) Compression fracture of the anterior part of vertebral body occurring in forward flexion Usually does

Denis’ three column concept of spine stability

Denis’ three column concept of spine stability

Stable spine is one which after the initial injury does not get displaced further. The spine is stable when atleast 2 columns of the spine are intact. According

Swan neck deformity

Swan neck deformity

Bones of the hand (Click on image for an enlarged view) Swan neck deformity refers to a structural deformity of the hand in which proximal interphalangeal joints are

$Undisplaced fracture$

Undisplaced fracture

Fracture of a bone in which the fracture fragments do not separate

Cod fish spine

Refers to biconcave vertebral bodies seen in osteomalacia Similar appearance can also be seen in osteoporosis

$Undisplaced fracture – Inferior pubic ramus$

Undisplaced fracture – Inferior pubic ramus

Plain x-ray pelvis AP view showing undisplaced fracture of inferior ramus of pubis. (Click on the image for an enlarged view) Differential diagnosis Looser’s zone seen in osteomalacia

Looser's zone

Looser’s zone refers to pseudofractures seen in osteomalacia Also called Milkman’s line Thin (about 2mm) radioluscent bands extending from the cortex inwards perpendicular to the bone surface Origin

Cambium layer

Inner layer of the periosteum of a bone composed of flattened osteoprogenitor cells Have the capacity to differentiate into osteoblasts Important in fracture healing Intracapsular area of neck

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