Bone Remodelling process
As stated by Tortora, G J, and Derrickson, B (2014) in their book Principles of Anatomy and Physiology, the first stage is fracture hematoma – inflammation from blood vessels at the fracture point within 3 days. Loss of blood flow kills the cells at fracture point. Monocytes, T and B cells and macrophage gather at the fracture site and start the formation of stem cells which later differentiate. Formation of fibrocartilaginous callus starts and takes about 3 weeks. During this time, osteoprogenitor cells develop into osteoblasts and start building the trabeculae using the bone fragments which later join the dead and living bony fragments to form spongy bone and new blood vessels. Osteoclasts reabsorb the bone fragments. fibrocartilaginous callus hardens to form compact bone around the fracture periphery which replaces spongy bone. Some of the remodelling phases are…show more content… This allows radiographers to detect any fractures not visible on the AP projection.
Alternative projections
Alternative techniques can be used when dealing with trauma patients who are wheelchair or trolley bound. The techniques adapted to ensure very limited movement of the patient which minimise pain and further injury. The patient remains seated in the wheelchair. The receptor is placed on a stool and the ankle placed on the receptor for an AP projection. A horizontal beam is used for the lateral projection. The receptor is placed vertically on the medial side of the ankle and the tube horizontal beam is latero-medial. (Whitley, Stewart A, et al. (2016))
Stress projections are done in theatre to help diagnose subluxation. All the techniques are done to help diagnose any pathology and minimise pain. The images produced will help with the diagnosis. This will facilitate the treatment plan and make the patient journey less distressing. Figure 6 below shows an image of a treated Weber B
