Hermantin70 | randomized controlled trial | 60 pts | Age 40 av | >3 months pain | LBP radicular pain, iamage conf L2S1 disc, cons tt ineffective | Backpain, improvement, return to work RTW, patient satisfaction, complications, reop |
---|---|---|---|---|---|---|
Krappel85 | randomized controlled trial | 40 pts | 40 | >1 month | Mri conf disc herniation,pain, deficit, failed cons tt | Mcnab, RTW, complications, reop, cost |
Mayer42 | randomized controlled trial | 40 | 41 | 6.9 | Failed cons tt, small non contained disc | Back leg pain, disability,symptom score,RTW,op time,reop |
Kim86 | Retro | 902 | 41 | 11 | Pain,failed constt, single level | Mcnab, op time, blood loss, complications, reop, radiology |
Lee72 | Retro | 60 | 39 | >3 | Ct mr conf disc, leg pain >back unilateral,failed cons tt | Macnab, op time, length of hospitalization,radiological |
Lee75 | Retro | 54 | 45 | Previous open surgery,recurrent radicular pain,MRI conf disc,failed cons tt | Back leg pain,ODI,op time,length of hospitalization,complications,reop | |
Ruetten74 | randomized controlled trial | 200 | 43 | 3 | Radicular pain,deficit,failed cons tt | Back leg pain,ODI,satisfaction,op time, blood loss, compli,reop,NASS score |
Ruetten73 | randomized controlled trial | 100 | 39 | 2 | Recurred disc,MRI conf,leg pain, deficit,failed cons tt | Back leg pain, ODI, satisfaction, op time, blood loss, compli, reop, NASS score |
Data source: Minimally invasive surgery for lumbar disc herniation: a systematic review and meta-analysis, Kamper et al. Eur Spine J (2014) 23:1021–1043. The data has been used to read and collate the references and make meaningful groups based on timeline. These studies are the only studies which have been recently considered to appreciate the state of endoscopy at present.