![]() Imaging is not always a helpful diagnostic modality as almost 27% of patients without back pain have been found to have disc herniation on magnetic resonance imaging (MRI). Furthermore, this incidental finding does not appear to be predictive of future development of back pain. This process can be acute or can develop chronically over time. ![]() The most common causes of lumbar radiculopathy are either a herniated disc with resultant nerve root compression or spondylosis. Thus, muscle strength is often only affected by severe cases of radiculopathy. Muscle strength is often preserved in the case of radiculopathy because muscles often receive innervation from multiple roots. Another common presentation is back pain radiating into the foot, with a positive straight leg raising test. The most common symptom in radiculopathy is paresthesia. Most cases of lumbosacral radiculopathy are self-limited. ![]() Acute lumbosacral radiculopathy is a diffuse disease process that affects more than one underlying nerve root, causing pain, loss of sensation, and motor function depending on the severity of nerve compression. Lumbosacral radiculopathy is very common. ![]()
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