A client is recovering from a fractured radius that occurred 8 weeks ago. In which stage of bone healing is the callus resorbed and transformed into bone?
Stage 4
Stage 3
Stage 5
Stage 1
The Correct Answer is A
Choice A reason: Stage 4 is the remodeling stage of bone healing, which occurs from 6 to 12 weeks after the fracture. In this stage, the callus, which is a mass of fibrous tissue and cartilage that forms around the fracture site, is gradually resorbed and replaced by mature bone. The bone becomes stronger and more compact and regains its original shape and function.
Choice B reason: Stage 3 is the callus formation stage of bone healing, which occurs from 2 to 6 weeks after the fracture. In this stage, the granulation tissue, which is a soft tissue that fills the fracture gap, is replaced by a callus that bridges the fracture ends. The callus is composed of fibroblasts, chondroblasts, and osteoblasts that produce collagen, cartilage, and bone matrix. The callus stabilizes the fracture and prepares it for remodeling.
Choice C reason: Stage 5 is not a valid stage of bone healing. There are only four stages of bone healing: stage 1 is the inflammatory stage, stage 2 is the reparative stage, stage 3 is the callus formation stage, and stage 4 is the remodeling stage.
Choice D reason: Stage 1 is the inflammatory stage of bone healing, which occurs from the time of the fracture to 3 to 5 days after the fracture. In this stage, the blood vessels around the fracture site are ruptured and form a hematoma, which is a blood clot that surrounds the fracture ends. The hematoma triggers an inflammatory response that involves the release of cytokines, growth factors, and inflammatory cells that initiate the healing process. The hematoma also provides a scaffold for the granulation tissue to grow.
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Related Questions
Correct Answer is C
Explanation
Choice A reason: Popping bursae from standing is not the cause of the grating sound. Bursae are fluidfilled sacs that cushion the joints and reduce friction. Popping bursae may produce a snapping or clicking sound, but not a grating sound.
Choice B reason: A herniated disk in the diseased joint is not the cause of the grating sound. A herniated disk is a condition where the soft inner part of the intervertebral disk bulges out through a tear in the outer layer. A herniated disk may cause pain, numbness, or weakness, but not a grating sound.
Choice C reason: Pieces of bone and cartilage floating is the cause of the grating sound. Osteoarthritis is a degenerative joint disease that causes the breakdown of the cartilage and bone in the joints. Pieces of bone and cartilage may detach and float in the joint space, causing a grating sound when the joint moves.
Choice D reason: Years of an autoimmune process is not the cause of the grating sound. An autoimmune process is a condition where the immune system attacks the body's own tissues. An autoimmune process may cause inflammation, swelling, or damage to the joints, but not a grating sound.
Correct Answer is C
Explanation
Choice A reason: Pulmonary embolism is not the correct answer, because it is a condition that affects the lungs, not the arm. Pulmonary embolism is a blockage of one or more arteries in the lungs by a blood clot, which can cause shortness of breath, chest pain, and coughing up blood.
Choice B reason: Ischial tuberosity is not the correct answer, because it is a bony projection on the pelvis, not the arm. Ischial tuberosity is the part of the pelvis that supports the weight of the body when sitting, and it can be injured by trauma, overuse, or infection.
Choice C reason: Compartment syndrome is the correct answer, because it is a condition that affects the arm, and it matches the symptoms of the client. Compartment syndrome is a serious complication of a traumatic injury, such as a fracture, that causes increased pressure within a closed space of the body, such as the forearm. This pressure can compromise the blood flow and nerve function of the affected area, causing pain, numbness, weakness, and pale skin.
Choice D reason: Broken arm syndrome is not the correct answer, because it is not a real medical condition. Broken arm syndrome is a madeup term that does not describe any specific diagnosis or treatment.
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