Many patients with back pain, leg pain, or weakness of the lower extremity muscles are diagnosed with a herniated disc. When a disc herniation occurs, the cushion that sits between the spinal vertebra is pushed outside its normal position.
Agnew, R. (2001). Building on the Foundation of General Strain Theory: Specifying the Types of Strain Most Likely to Lead to Crime and Delinquency. Journal of Research in Crime and Delinquency, 38, 319â361.CrossRef. Agnew, R. (2002).
Definition. 1  A muscle strain is an injury (partial tear) that damages the internal structure of the muscle. The tearing may be so small that one could only see it with a microscope or the tearing may be severe enough to cause internal bleeding and cause some muscle fibers to lengthen.