Due to its rarity, iatrogenic spinal cord damage during spinal anaesthesia subsequent to lumber puncture is a somewhat less well-known phenomenon. Syrinx development or myelomalacia of the lumbar spinal cord due to direct cord damage is extremely rare. We present five patients who had this consequence, which resulted in a variety of neurological impairments, and whose MRI revealed myelomalacia or syrinx in the conusepiconus region. During follow-up, some of our patients showed symptomatic partial to complete recovery. As a result, practitioners must be aware of the risk of lumber puncture during spinal anaesthetic and proceed with caution to avoid neurological problems.