There's been an epidemic of vitamin D deficiency over the last few decades because we've been avoiding the sun, Volgman says. Other reasons include having a milk allergy, following a strict vegetarian meal plan, and having darker skin (the pigment melanin reduces the skin's ability to make vitamin D from sunlight).
Sacral fractures - Denis classification. Zone 1: Region of the ala. Zone 2: Region of the sacral foramina. Zone 3: Region of central sacral canal. Provide an explanation for key principles and pertinent aspects of the classification. Provide the citation for the landmark article and recent review articles describing the classification.
A distal radius fracture almost always occurs about 1 inch from the end of the bone. The break can occur in many different ways, however. One of the most common distal radius fractures is a Colles fracture, in which the broken fragment of the radius tilts upward.This fracture was first described in 1814 by an Irish surgeon and anatomist, Abraham Colles -- hence the name Colles fracture.A Colles fracture occurs when the broken end of the radius tilts upward. Other ways the distal radius can break include: 1  Intra-articular fracture.2  A fracture that extends into the wrist joint. ( 3 Articular means joint.). 4  Extra-articular fracture. 5  A fracture that does not extend into the joint is called an extra-articular fracture. 6  Open fracture.he break can occur in many different ways, however. One of the most common distal radius fractures is a Colles fracture, in which the broken fragment of the radius tilts upward. This fracture was first described in 1814 by an Irish surgeon and anatomist, Abraham Colles -- hence the name Colles fracture.