Are biomechanical models for estimating spinal compression too simplistic?
Ans) Loading during concurrent bending and compression of spine associated with deadlift, hang clean and hang snatch lifts carries the potential for injury to the intervertebral discs, muscles and ligaments.
It examined the capacity of a newly developed spinal model to compute shear and compressive forces, and bending moments in lumbar spine for each lift.
- Each vertebral reference frame was centered in the center of mass of the vertebral body, and its principal directions were axial, anterior-posterior, and medial-lateral.
- It demonstrated the capacity of this spinal model to assess forces and bending moments at and about the lumbar vertebrae by showing the variations among these variables with different lifting techniques.
Thus the biomechanical model is potential as a diagnostic tool.
Are biomechanical models for estimating spinal compression too simplistic?
Kelly is a 67-year-old female complaining of spinal pain. Two compression fractures of the lumbar spine are present and the patient is osteoporotic. What medications would you recommend for this patient?
.Primary spinal cord injury involves damage to vertebral or neural tissues from compression, traction, or shearing forces. Secondary spinal cord injury is related to ischemia, excitotoxicity, inflammation, edema, oxidative damage, and activation of necrotic and apoptotic cell death; it begins within minutes after injury and continues for weeks. Please describe an example of both a primary and secondary spinal cord injury. and describe how the patient experienced both primary and secondary injuries. Be sure to describe symptoms, implications, and testing...
Primary spinal cord injury involves damage to vertebral or neural tissues from compression, traction, or shearing forces. Secondary spinal cord injury is related to ischemia, excitotoxicity, inflammation, edema, oxidative damage, and activation of necrotic and apoptotic cell death; it begins within minutes after injury and continues for weeks. Please describe an example of both a primary and secondary spinal cord injury. Some learners will use the same injury, such as a fall off of a horse, and describe how the...
Primary spinal cord injury involves damage to vertebral or neural tissues from compression, traction, or shearing forces. Secondary spinal cord injury is related to ischemia, excitotoxicity, inflammation, edema, oxidative damage, and activation of necrotic and apoptotic cell death; it begins within minutes after injury and continues for weeks. Please describe an example of both a primary and secondary spinal cord injury. Some learners will use the same injury, such as a fall off of a horse, and describe how the...
When estimating linear regression models with more than one predictor, how should one assess model fit? How does this differ from the simple linear model with one predictor?
3. Estimating models with dummy variables Consider the following simple model of the college grade point average determination: colGPA = Bo + DPC + DihsGPA + B2ACT + u, colGPA = college GPA PC = personal computer (PC) ownership hsGPA = high school GPA ACT = achievement test score Suppose that in estimating this model, we obtain the following: colGPA = 1.26 + 0.16 PC + 0.447 hsGPA + 0.009 ACT Suppose n=141 and R2 =0.219. Which of the following...
1. List 4 stock valuation models for estimating the proper price for a company's stock. 2. Using the P/E method, calculate the expected stock price if the expected EPS is $4 and the average P/E in that industry is 15. 3. What's the difference between fundamental analysis and technical analysis? 4. Is the P/E method of stock valuation a type of fundamental or technical analysis? 5. What's the difference between "Value" investing and "Momentum" investing? 6. The CAPM model introduces...