Keywords: گرفتگی عضله; Botulinum toxins; Muscle cramp; Rehabilitation; Spinal stenosis; BTX; botulinum toxin; GPN; gabapentin; ISI; Insomnia Severity Index; LSS; lumbar spinal stenosis; NCC; nocturnal calf cramp; NRS; numeric rating scale; ODI; Oswestry Disability Index; PGIC;