Segmental pedicle screw instrumentation in idiopathic thoracolumbar and lumbar scoliosis

Primary thoracoplasty and pedicle screw instrumentation in thoracic idiopathic scoliosis

“…In King II curves there was 54% improvement of the compensatory lumbar curves, from 39 (30-45°) to 17.8°(10-25°) at the last follow up. The average clinical rib hump of this group was 12.2°( 8-14) preoperatively and 7.6° (5)(6)(7)(8)(9)(10)(11)(12) at the last follow up. This represented a spontaneous improvement of 37%.…”

“…The average total score of the questionnaire was 89 (40-112) out of a maximum of 120 possible points. For the subscore pain 25 (1-35), for the general self-image 12 (7)(8)(9)(10)(11)(12)(13)(14)(15), for the postoperative self-image 10 (4-15) and for the postoperative function 6 (2-10) points were determined. The score for the function from the back condition and the level of activity were 11 (6-13) and 12 (4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15), respectively and in patients satisfaction an average score of 12 (6-15) was achieved.…”

“…Reports about thoracoplasty were in conjunction with instrumentation of scoliosis using Harrington or CD instrumentation [5,8,15,19]. The use of pedicle screws for correction of scoliosis is safe and leads to better curve correction [7,11,12,16,17]. There are no reports about the results of thoracoplasty together with scoliosis correction using thoracic pedicle screws.…”

The influence of pedicle screw placement on thoracic trabecular strain

“…[1][2][3][4][5][6] Screw breakage and loosening, however, are not uncommon. [7][8][9][10] Recently, Waelchli et al 11 reported two cases of vertebral compression fractures following pedicle screw removal.…”

Use of finite element analysis of a Lenke type 5 adolescent idiopathic scoliosis case to assess possible surgical outcomes

“…However, the third generation of posterior correction instrumentation has more orthopedic force than the first and second generations, especially with regard to the segmental pedicle screw technique, which can penetrate the anterior, middle or posterior column and is more capable than the hook-rod system in 3D correction, in terms of positioning the distal vertebral body close to the midline and making an unstable vertebral body enter a stable area intraoperatively [3], and involves fewer fusion segments. Several other groups [17][18][19][20][21][22][23] have treated thoracolumbar/ lumbar AIS with pedicle screw fixation, making the distal vertebral fusion become end vertebral or neutral vertebral fusion with good correction effects.…”