Magnetic Resonance Image Findings in the Early Period After Lumbar Discectomy With Satisfactory Results

The association between pain scores and disc height change following discectomy surgery in lumbar disc herniation patients: a systematic review and meta-analysis

“…1). Eighteen studies met the selection criteria for the purposes of the present review, which included two RCTs [27,28] and 16 observational studies [12,[29][30][31][32][33][34][35][36][37][38][39][40][41][42][43].…”

“…One RCT and seven observational studies (a total of 366 patients with a mean follow-up duration of 305.3 weeks) [12,27,[33][34][35][38][39][40] used the following three methods to estimate the DHI (method-2 group): DHI method-2a L2/3-L5S1: the ratio of DH to the sagittal diameter of the overlying vertebral body = [(a + b + c)/3]/d [27,38,39]; DHI method-2b L2/3-L5S1: the ratio of DH to the height of the overlying vertebral body = disc height/vertebral height [33,35,40]; DHI method-2c L2/3-L5S1: the ratio of preoperative DHI to the post-operative DHI = Preoperative DHI/postoperative DHI) [12,34].…”

“…In eight studies [12,27,[33][34][35][38][39][40], the DHI after discectomy surgeries showed 11.5% reduction (SMD = −0.81 (95% CI = −0.97 to −0.65), I 2 = 95.8%, P = 0.000). Based on all 3 DHI measuring methods, there was a significant reduction of DH after discectomy surgery by mixed effect model (DHI method-2a group [27,38,39] (SMD = −0.52 (95% CI = −0.84 to −0.21)), DHI method-2b group [33,35,40] (SMD = −0.42 (95% CI = −0.63 to −0.20)) and DHI method-2c [12,34] (SMD = −2.56 (95% CI = −2.95 to −2.18))) (Fig. 4).…”