Correlation between Disc Imaging Observations and Clinical Efficacy after Percutaneous Endoscopic Lumbar Discectomy: A 1-Year Follow-up Study.

Objective: The connection between alterations in the disc structure following percutaneous endoscopic lumbar discectomy (PELD) and symptoms in patients postsurgery has not been reported yet. The purpose of the present study was to discuss the potential correlation between the changes in the morphological characteristics of various reference surfaces of the intervertebral disc after percutaneous endoscopic lumbar discectomy (PELD) and clinical outcomes, to identify the morphological parameters that affect efficacy and provide an evidence-based foundation for assessing postoperative efficacy.

Methods: From October 2019 to October 2021, after percutaneous endoscopic lumbar discectomy (PELD), 98 individuals were enrolled.

Trans-intervertebral osteotomy classification of posterior spinal corrective osteotomy procedures via the intervertebral space.

•This is a diagnostic study for a classification for posterior spinal osteotomy procedures via the intervertebral space.•Proposed ​ ​with ​ ​and ​, differ from the SRS-Schwab osteotomy classification.•Give of "" () for posterior spinal osteotomy procedures.

Pedicle Subtraction Osteotomy in Lateral Position: A New Strategy for Correcting Severe Thoracolumbar Kyphosis Combined with Hip Flexion Contracture in Ankylosing Spondylitis.

Objective: To describe spinal osteotomy in lateral position, which might be a new strategy for correcting thoracolumbar kyphotic deformity combined with severe hip flexion contracture, and to present two cases in which this method was successfully performed.

Methods: Spinal osteotomies in lateral position were performed in two patients with severe thoracolumbar kyphosis combined with hip flexion contracture, which was not suitable for operation in the prone position. Case 1: a 33-year-old female AS patient still had severe hip flexion contracture due to poor rehabilitation after total hip replacement (THR).

Correlation of Acetabular Anteversion and Thoracic Kyphosis Postoperatively with Proximal Junctional Failure in Adult Spinal Deformity Fused to Pelvis.

Objectives: To investigate whether the immediate thoracic kyphosis (TK) and acetabular anteversion (AA) postoperatively are correlated with proximal junctional failure (PJF) in adult spinal deformity (ASD) patients underwent surgical treatment.

Methods: This is a retrospective study. Following institutional ethics approval, a total of 57 patients (49 Female, eight Male) with ASD underwent surgery fused to sacroiliac bone (S1, S2, or ilium) from March 2014 to January 2019 were included.

Association of Sagittal Spinopelvic Realignment with Correction in Lower Lumbar Lordosis after Surgical Treatment in Degenerative Lumbar Scoliosis.

Objective: To assess the effect that correction of lower lumbar lordosis (3L) has on global spine realignment due to the key role of 3L for scoliosis surgery in patients with degenerative lumbar scoliosis (DLS).

Methods: This study is a retrospective review performed between June 2018 and January 2020, including consecutive patients with DLS. Only patients age ≥ 45 years who had already undergone a selective root block operation and had the procedure of long-fusion extending to pelvis and posterior lumbar interbody fusion (PLIF) at lower lumbar spine (L -S ) were retained for analysis.

Compensatory Mechanism of Maintaining the Sagittal Balance in Degenerative Lumbar Scoliosis Patients with Different Pelvic Incidence.

Objective: To investigate the compensatory mechanism of maintaining the sagittal balance in degenerative lumbar scoliosis patients with different pelvic incidence (PI).

Methods: This was a retrospective imaging observation study. Patients in our department with degenerative lumbar scoliosis between 2017 and 2019 were reviewed.

Low pelvic incidence is associated with Andersson lesions in ankylosing spondylitis patients with kyphosis.

Introduction/objectives: This study was to investigate the role of pelvic incidence (PI) in the development of Andersson lesions (ALs) in ankylosing spondylitis (AS) patients with kyphosis and to evaluate the difference in sagittal spinopelvic parameters between inflammatory ALs and mechanical ALs.

Method: A total of 135 AS patients with kyphosis were reviewed. The patients were classified into AL group and non-AL group based on the presence or absence of ALs.

Proposal of a New Treatment-Oriented Classification System for Spinal Deformity in Ankylosing Spondylitis.

Objective: To describe and apply an optimal classification system for the management of ankylosing spondylitis (AS) that may be appropriate to make a preoperative surgical plan.

Background: The treatment choices of ankylosing spondylitis kyphosis remain controversial. The lack of a widely accepted classification system contributes to the variation in surgical decision making.

Relationship between Lung Volume and Pulmonary Function in Patients With Adolescent Idiopathic Scoliosis: Computed Tomographic-based 3-Dimensional Volumetric Reconstruction of Lung Parenchyma.

Study Design: Retrospective.

Objectives: We determined values for the volume of right lung (Vr), left lung (Vl), total lung volume (Vt), and left/right lung volume ratio (Vl/Vr), allowing comparison between those data measured and those of age-matched controls. To find whether lung volume correlates with preoperative pulmonary function.

Three-dimensional computed tomography for assessing lung morphology in adolescent idiopathic scoliosis following posterior spinal fusion surgery.

Objective: To evaluate the changes in lung morphology in subjects with adolescent idiopathic scoliosis (AIS) following posterior spinal fusion surgery.

Methods: From April 2009 to August 2013, 30 AIS patients (nine males and 21 females) were enrolled in this study. All scans were obtained with the patient in the supine position and the breath held in deep inspiration and performed both before and after surgery.

Positioning thoracic pedicle screw entry point using a new landmark: a study based on 3-dimensional computed tomographic scan.

Study Design: A novel method to identify the entry point.

Objective: To quantify the position of thoracic pedicle screw entry points on the lamina at various segments of the thoracic vertebrae in normal subjects and patients with adolescent idiopathic scoliosis and propose a new technique to select entry points using a new landmark.

Summary Of Background Data: Thoracic pedicle screws have been widely used in thoracic surgery, and the placement of pedicle screws has been studied extensively.

Two-level spinal osteotomy for severe thoracolumbar kyphosis in ankylosing spondylitis. Experience with 48 patients.

Study Design: A retrospective study.

Objective: To report surgical results for severe thoracolumbar kyphosis secondary to ankylosing spondylitis (AS) corrected with 2-level spinal osteotomy.

Summary Of Background Data: Transpedicular osteotomy in the lumbar spine is the major approach to correct kyphosis in AS.

Early posterior spinal canal decompression and circumferential reconstruction of rotationally unstable thoracolumbar burst fractures with neurological deficit.

Background: Among the various treatments of neurologically involved unstable thoracolumbar burst fractures, the combination of anterior and posterior instrumentation provides the most stable reconstruction. However, the use of both approaches on a trauma patient may increase the morbidity. This study is a retrospective matched cohort study to evaluate the advantages of a single stage posterior approach for spinal canal decompression in combination with circumferential reconstruction by comparing the clinical and radiographic results.

[Clinical efficacies of skipping two-level transpedicular wedge osteotomy for correction of severe kyphosis in ankylosing spondylitis].

Objective: To explore the clinical efficacies of skipping two-level transpedicular wedge osteotomy in the correction of severe kyphotic deformity in ankylosing spondylitis (AS).

Methods: From January 2003 to December 2009, a total of 38 consecutive patients with AS and severe kyphosis (chin-brow vertical angle (CBVA) or global thoraco-lumbar kyphosis angle (TLKA) over 70°) undergoing skipping two-level transpedicular wedge osteotomy at the Department of Orthopedics of Chinese PLA General Hospital were reviewed retrospectively. There were 32 males and 6 females with an average age of 38.

[One-stage total en bloc spondylectomy and reconstruction via a single posterior approach for thoracic vertebral symptomatic hemangioma associated with spinal cord dysfunction].

Objectives: To investigate the surgical results of one-stage total en bloc spondylectomy (TES) and reconstruction via a single posterior approach for thoracic symptomatic vertebral hemangioma associated with spinal cord dysfunction and evaluate its curative effect.

Methods: A total of 9 patients treated with one-stage TES (7 cases) and total vertebrectomy (2 cases) by posterior approach from March 2006 to January 2010 were retrospectively reviewed. The cases included 2 males and 7 females with a median age of 33.

[Animal experiment of memory alloy staples to control the sagittal growth of vertebrates].

Objective: To present that Nickel-Titanium (NT) memory alloy staples in fusionless controlling the growth of the vertebrates in the sagittal plane.

Methods: Eighteen infant female goats were selected and equally divided into 3 random groups: long staple group, short staple group and blank control group. Five long staple (the legs' length = 7 mm) and five short staple (the legs' length = 4 mm) were implanted into each goat in long and short staple groups respectively by anterior approach, right on the front of the thoracic vertebrae from T(6) to T(11).

[Vertebral column decancellation for the management of rigid scoliosis: the effectiveness and safety analysis].

Objective: to explore the effectiveness and safety of vertebral column decancellation (VCD) for the management of rigid scoliosis.

Methods: from May 2004 to February 2008, 32 patients with rigid scoliosis underwent VCD were reviewed. There were 12 males and 20 females with an average age of 18 years (range, 10 - 56 years).

Scoliosis model created by pedicle screw tethering in immature goats: the feasibility, reliability, and complications.

Study Design: An in vivo model of scoliosis was established in immature goats.

Objective: To assess the feasibility, reliability, and complications of the innovative animal model.

Summary Of Background Data: Among the methods of creating a scoliotic model, posterior asymmetric tethering of spine yielded encouraging results.

[An experimental study of correction of idiopathic-type scoliosis by staple].

Objective: To evaluate the feasibility of the correction idiopathic-type scoliosis by implanting the staple in growing animal models.

Methods: Fourteen female goats were performed unilateral pedicle screws asymmetric tethering in left side in combination with right rib resection (age: 5 to 8 weeks, weight: 6 to 8 kg). The observing time was about 8 weeks.

Posterior-only multilevel modified vertebral column resection for extremely severe Pott's kyphotic deformity.

Extremely severe Pott's kyphotic deformity cannot be completely corrected by conventional techniques, including vertebral body resection, Smith-Peterson, pedicle subtraction osteotomy or even vertebral column resection (VCR). The authors developed a new technique combining transpedicular eggshell osteotomies and VCR as multilevel modified vertebral column resection (MVCR) through a single posterior approach for surgical treatment of Pott's kyphosis with Konstam's angle beyond 90 degrees. A total of 9 patients (6 males, 3 females) in our institution with severe Pott's kyphosis who underwent single-stage posterior-only multilevel MVCR were retrospectively reviewed.

[Clinical outcomes of single level Bryan cervical disc arthroplasty: a prospective controlled study].

Objective: To compare the clinical outcomes of single level Bryan cervical disc replacement with traditional anterior cervical discectomy and fusion (ACDF).

Methods: From Dec 2003 to May 2005, 59 patients with primary, single-level cervical radiculopathy and/or myelopathy were prospectively randomized into 2 groups: Bryan group with artificial disc replacement and ACDF group with traditional anterior cervical discectomy and fusion. Operation time, blood loss and hospitalization duration were compared between the 2 groups.

[Experimental study on controlling unilateral spine growth by shape memory alloy staple].

Objective: To observe the effects that shape memory alloy (SMA) staples implanted to the lateral aspect of the thoracic vertebrae on spinal growth in goats.

Methods: Sixteen goats (age 2 - 3 months) were divided into 3 groups: six in single staple group; six in double staples group and four in control group. Single staples group underwent right-side thoracotomy for exposing the thoracic spine through the eighth rib.