(SBQ18SP.57)
A 63-year-old male undergoes a C4-C7 posterior fusion and laminectomy secondary to significant spinal cord stenosis. Pre-operative examination reveals neck pain, spasticity signs, and finger clumsiness. Post-operative day one, he complains of significant weakness with raising his left arm overhead and on further examination, you notice a clear sensation deficit over the lateral shoulder. What is the most commonly affected structure?
QID:
211729