What kinds of fractures are produced only by combined loading? (Identify fracture types with their associated causative loadings.)


1. What kinds of fractures are produced only by combined loading? (Identify fracture types with their associated causative loadings.)

2. Approximately 56% of body weight is supported by the fifth lumbar vertebra. How much stress is present on the 22 cm2 surface area of that vertebra in an erect 756 N man? (Assume that the vertebral surface is horizontal.) (Answer: 19.2 N/cm2 )