When Radiculopathy Isn’t Radiculopathy: A Clinical Series (Pt. 2)
Many patients present with radicular-like symptoms such as limb pain and paresthesia, yet they lack the classic dermatomal patterns and objective neurological deficits of true nerve root compression. This article introduces "myogenic pseudo-radiculopathy," a concept where these symptoms originate from deep muscular dysfunction rather than the spine. This condition differs fundamentally in its mechanism, with symptoms arising from deep stabilizing muscles like the piriformis or subscapularis. Key characteristics include non-dermatomal symptom distribution, the absence of progressive neurological deficit, and symptom reproduction with muscle loading or stretching. The underlying mechanisms involve myofascial trigger points creating referred pain, altered afferent signaling from hypertonic muscles sensitizing the central nervous system, and sustained nociceptive input from compensatory muscle patterns. Clinicians must learn to distinguish between primary muscular pain generators and secondary structural findings on imaging. Recognizing myogenic pseudo-radiculopathy is crucial for avoiding unnecessary escalations to invasive spinal procedures and instead implementing conservative strategies that restore motor control and normalize sensory input. This functional diagnostic approach leads to better patient outcomes by treating the true source of dysfunction.
