Neuraxial AnatomyDownloads

A resident at the emergency department is preparing for a lumbar puncture in a 26 years old female with suspected subarachnoid bleeding. Although she presented with altered sensorium, CT brain was found to be normal. During LP, which structure is pierced after the spinal needle crosses interspinous ligament?

Best site for administering spinal anesthesia is the intervertebral space between.