Acute low back pain is usually defined as the duration of an episode of low back pain persisting for less than 6 weeks; sub-acute low back pain as low back pain persisting between 6 and 12 weeks; chronic low back pain as low back pain persisting for 12 weeks or more. Recurrent low back pain is defined as a new episode after a symptom-free period of 6 months, but not an exacerbation of chronic low back pain.2
Pain is a subjective experience, and acute pain is a warning signal which expresses that body tissue is about to be injured. If injury actually occurs, then a cascade of pathophysiological events will take place in a well mapped simultaneous and chronological order.9
Pain intensity is usually most prevalent in the inflammatory phase …show more content…
Peak prevalence occurs between ages 35 and 55.2
Specific low back pain represents 15% of low back pain problems. About 50% of specific back pain is due to prolapsed intervertebral disc (PID), in which the nucleus pulposus herniates through a tear in the annulus fibrosis, resulting in irritation of the adjacent nerve root and causing a typical radiculopathy pain. It is commonly seen in the age group of 15- 45 years of age.3 Majority of the spinal disc herniations occurs in the lumbar region (95% in the L4-L5 or L5-S1).
The clinical phenomena in acute LBP are pain and neurological disorders that affect activities of daily living. The symptoms range from mild to severe that radiate into the regions served by the affected nerve root that are irritated or impinged by the herniated material. Other symptoms may include motor and sensory changes such as muscular weakness, numbness, paralysis, paresthesia and altered