Tendon transfers. People with spinal cord injuriesmay lose

Chapter 5, Problem 10

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Tendon transfers. People with spinal cord injuriesmay lose function in some, but not all, of their muscles.The ability to push oneself up is particularly importantfor shifting position when seated and for transferring intoand out of wheelchairs. Surgeons compared two opera-tions to restore the ability to push up in children. The his-togram shows scores rating pushing strength two yearsafter surgery and boxplots compare results for the twosurgical methods. (Mulcahey, Lutz, Kozen, Betz, Prospec-tive Evaluation of Biceps to Triceps and Deltoid to Tricepsfor Elbow Extension in Tetraplegia, Journal of HandSurgery, 28, 6, 2003) a) Describe the shape of this distribution.b) What is the range of the strength scores?c) What fact about results of the two procedures ishidden in the histogram?d) Which method had the higher (better) median score?e) Was that method always best?f) Which method produced the most consistent results?Explain.