What is the definition or description of: back surgery?

Any surg sub fascia: Any surg that enters the muscles & beyond. Usually means involving work on the bone structurs disks r considered back surgery. They include a multitude of procedures. 2 many 2 list here!

See below: Back surgery is a procedure that aims to change a patient’s anatomy, such as removing a herniated disc that is causing pain, with the purpose of providing pain relief. Back surgeries vary, with some procedures minimally invasive and allowing for quick recovery and others more extensive and requiring longer recoveries. Lumbar laminectomy and microdiscectomy are a couple of back surgery examples.