Abstract Background The purpose of the study was to investigate whether pelvic incidence (PI) will affect occurrence PJK in Lenke 5 AIS patients after correction surgery and try explore a better surgical scheme based on PI. Methods 5C that underwent with minimum 2-year follow-up were identified. Demographic radiographic data collected preoperatively, postoperatively, at final follow-up. compari...

distal junctional kyphosis (djk) is a radiographic finding in patients that undergo spinal instrumentation and fusion, since there is an abrupt transition between fixed and mobile spinal segments.the true incidence of djk is variable in literature and seems that has a multifactorial etiology. a consecutive series of 130 patients (mean age 15.6 years) with adolescent idiopathic scoliosis who und...

BACKGROUND Correction of a focal kyphotic deformity at times requires performing a pedicle subtraction osteotomy, which is accompanied by loss of pedicles as anchor points at the affected level in addition to significant blood loss. To help alleviate these two issues, a novel osteotomy technique for correction of kyphosis using a transforaminal approach to the thoracic vertebral body is describ...

The authors have performed a retrospective study of 20 patients who underwent surgical treatment for kyphosis secondary to trauma (10 patients) or Scheuermann's disease (10 patients) between 1992 and 2000. The mean follow-up was 60 months (range, 32-90) and 59.5 months (range, 24-109) respectively. Radiological evaluation of Scheuermann kyphosis included assessment of thoracic kyphosis angle (T...

Operative procedure The pedicle screws in the proximal site of osteotomy are not connected to the rod to permit spinal shortening in the postoperative course. When a connector is used between a pedicle screw and a rod, the connector is not fixed to the rod to allow it to slide on the rod. When a connector is not used, the rod is only placed in the screw head with reinforcement by some sets of c...

Correct identification of fusion levels in surgical planning for the management of adolescent idiopathic scoliosis is a complex task. Several classification systems and algorithms exist to assist surgeons in determining the appropriate levels to be instrumented. The Lenke classification is the benchmark system. Among the many factors and measurements that are taken into account when selecting t...