Like any spine surgery, endoscopic surgery carries some risk, though published research generally shows rates comparable to or lower than open surgery. The most common issue is temporary nerve irritation or unusual sensation near the treated nerve, which typically improves with conservative treatment like anti-inflammatory medication or a follow-up injection. There's also a chance the disc can reherniate — published estimates range from about 3% to 15%, influenced by factors like smoking, body weight, and heavy physical work. Serious complications such as infection, significant bleeding, or nerve injury are rare. Your specific risk factors are part of what's discussed during consultation.