Randomized Controlled Trial
Transforaminal posterolateral endoscopic discectomy with or without the combination of a low-dose chymopapain: a prospective randomized study in 280 consecutive cases.
Spine. 2006 Nov 15; 31 (24): E890-7.
Clinical Trial
The outcomes of lumbar microdiscectomy in a young, active population: correlation by herniation type and level.
Spine. 2008 Jan 1;33(1):33-8.
Randomized Controlled Trial
Effectiveness of microdiscectomy for lumbar disc herniation: a randomized controlled trial with 2 years of follow-up.
Spine. 2006 Oct 1;31(21):2409-14.