A Case of Intraspinal Cystic Mass Formation with Involvement of the Pseudoarthrosis of an Osteoporotic Vertebral Compression Fracture after Selective Nerve Root Block

An 85-year-old woman was admitted to our hospital for back pain and severe bilateral anterior thigh pain. She was radiographically diagnosed with an L2 osteoporotic vertebral compressed fracture accompanied by an intervertebral cleft with consequent bilateral L2/3 foraminal stenosis. We first performed a bilateral L2 root block since she had severe congestive heart failure. Her anterior thigh pain subsided thereafter, but she complained of left...