Lumbar vertebrae   Lumbar vertebrae surgery   Microsurgery   Spinal neoplasms   Zygapophyseal joint   Spinal neoplasms surgery   Ganglion cysts   Ganglion cysts surgery   Zygapophyseal joint surgery   Synovial cyst   Synovial cyst surgery   Human   Female   Male   Adult   Middle aged   Aged   Treatment outcome   Retrospective studies   80 & over aged   Time factors   Low back pain   Follow-up studies   Low back pain surgery   Low back pain etiology   Spinal neoplasms complications   Synovial cyst complications   Ganglion cysts complications