Spread of Paravertebral Injections in the Lumbar Plexus Area

Lumbar paravertebral block (LPB) has been used for anesthesia in different settings such as in varicocelectomy and inguinal hernia repair in adults and pediatrics. Different studies considered LPB as an alternative to general and spinal anesthesia when contraindications exist, especially in elderly patients. However, the results obtained when using LPB are controversial in terms of number of injections performed and the success rates.