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.
Radiographs only show 30% of sacral fractures. recommended views AP pelvis. inlet view best assessment of sacral spinal canal and superior view of S1. outlet view provides true AP of sacrum. additional views cross-table lateral effective screening tool for sacral fractures. often of poor quality.