Nevertheless, as regards operative indices, roughly the same results were obtained as in studies without strictly independent references.
The results of clinical studies evaluating the PSB technique have in fact been conflicting, with wide variations of operative indices being a striking feature.
If the pre-operative index is decreased post-operatively, this means that the patient is improved and vice versa.
We collected the general information of patients (gender, age and body mass index), operative parameters (operative time and blood loss) and postoperative recovery (first flatus time, hospital stay and postoperative complications).
The aim of this study was to examine the relationship between index operative experience and competence.
Open image in new window Fig. 1 a Pre-operative Blackburne-Peel index: a normal result, as measured by b/a, is 0.562.
b A post-operative Blackburne-Peel index of 0.487 as measured by b/a, is classified as patella alta Open image in new window Fig. 2 a Pre-operative Insall-Salvati ratio: a normal result, as measured by b/a, is 0. (Same as case in Fig. 1).
In this study, a pre-operative body mass index > 27.5 kg/m2 and range of movement < 100° were risk factors predicting early failure.
At univariate analysis, the wall thickness value at the level of ileo-colonic anastomosis (ICA), the extension of intramural lesions at the level of neo-terminal ileum, age, and post-operative CD activity index (CDAI) at referral, were all significantly associated with Rutgeerts severity score.
A recent study found an association of a COMT SNP rs4633, as well as of a haplotype containing rs4633, rs4680, rs6269 and rs4818 with greater improvement in 1 year post-operative Oswestry Disability Index (ODI) score in patients who had fusion for persistent LBP [ 28].
This system that was developed we termed the Operative Score of Complexity index.
