The Sagittal Balance of the Cervical Spine: Radiographic Analysis of Interdependence between the Occipitocervical and Spinopelvic Alignment.

Conclusions: Our results indicate significant interdependence between the spinopelvic and cervical alignment, especially in cervical symptomatic patients. In addition, strong correlation was found between the C7 SVA and C2C7 Cobb angle. Overall, the results of this study could help to better understand the cervical sagittal alignment and serve as preliminary data for planning surgical reconstruction procedures. PMID: 31992027 [PubMed - as supplied by publisher]
Source: Asian Spine Journal - Category: Orthopaedics Tags: Asian Spine J Source Type: research

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Conclusions: Carrying a load on the head leads to accelerated degenerative changes, which involve the upper cervical spine more than the lower cervical spine and predisposes it to injury at a lower threshold. Thus, alternative methods of carrying loads should be proposed. PMID: 32213796 [PubMed - as supplied by publisher]
Source: Asian Spine Journal - Category: Orthopaedics Tags: Asian Spine J Source Type: research
Authors: Kaliya-Perumal AK, Soh TLT, Tan M, Oh JY Abstract Study Design: Retrospective radiological analysis. Purpose: To analyze the factors influencing early disc height loss following lateral lumbar interbody fusion (LLIF). Overview of Literature: Postoperative disc height loss can occur naturally as a result of mechanical loading. This phenomenon is enabled by the yielding of the polyaxial screw heads and settling of the cage to the endplates. When coupled with cage subsidence, there can be significant reduction in the foraminal space which ultimately compromises the indirect decompression achieved by L...
Source: Asian Spine Journal - Category: Orthopaedics Tags: Asian Spine J Source Type: research
CONCLUSIONS: A high index of suspicion is needed to diagnose sacral insufficiency fracture after LS arthrodesis. A trial of conservative management is reasonable for select patients; potential surgical indications include refractory pain, neurological deficit, fracture nonunion with anterolisthesis or kyphotic angulation, L5-S1 pseudarthrosis, and spinopelvic malalignment. Lumbopelvic fixation with iliac screws may be effective salvage treatment to allow fracture healing and symptom improvement. High-risk patients may benefit from prophylactic lumbopelvic fixation at the time of index LS arthrodesis. PMID: 32217798 [P...
Source: Journal of Neurosurgery.Spine - Category: Neurosurgery Authors: Tags: J Neurosurg Spine Source Type: research
AbstractPurposeTo investigate airway development and airway resistance by computed tomographic three-dimensional (3D) reconstruction of the bronchial tree in patients with adolescent idiopathic scoliosis (AIS). We evaluated factors predicting postoperative respiratory complications to provide timely treatment, prevent complications, and improve operative and anesthetic safety.MethodsFrom August 2015 to August 2017, 53 AIS patients with a mean age of 15.4  years (range 10–20 years) were included in this study. Scoliotic parameters on radiographs were analyzed. Airway resistance was obtained by pulmonary func...
Source: European Spine Journal - Category: Orthopaedics Source Type: research
Authors: Qiu X, Zhao B, He X, Zhao C, Leng Z Abstract BACKGROUND We compared the clinical and radiographic outcomes between interface fixation using absorbable screws and plate fixation in anterior cervical corpectomy and fusion (ACCF) to evaluate the effectiveness of these 2 fixation methods for the treatment of 2-level cervical spondylotic myelopathy (CSM). MATERIAL AND METHODS From January 2014 to December 2016, a total of 220 patients who received 2-level ACCF were retrospectively collected. Among them, 108 patients were treated with interface fixation using absorbable screws (Group A) and 112 patients underwen...
Source: Medical Science Monitor - Category: Research Tags: Med Sci Monit Source Type: research
Proximal junctional failure (PFJ) is a common and dreaded complication of adult spinal deformity. Previous research has identified parameters associated with the development of PJF and the search for radiographic and clinical variables continues in an effort to decrease the incidence of PFJ. The lordosis distribution index (LDI) is a parameter not based on pelvic incidence. Ideal values for LDI have been established in prior literature with demonstrated association with PJF.
Source: The Spine Journal - Category: Orthopaedics Authors: Tags: Clinical Study Source Type: research
The objective of this work is to verify this relationship in a normal population.MethodsFull spine radiographs of 100 adolescents and young adults (13 to 20  years old), free from vertebral pathology, were analyzed. Measurements included pelvic parameters, LL, PLL, DLL, TK, PTK, DTK and C7 global tilt. The measured global TK was compared with the theoretical TK calculated according to the formula TK = 2(PT + LL − PI).ResultsThe difference between measured TK and calculated TK was +  2.3° and correlated with the C7 global tilt (r = 0.86). There wa...
Source: European Spine Journal - Category: Orthopaedics Source Type: research
ConclusionsThe cause of poor outcome of GAP score for ASD corrective surgery with LLIF without osteotomy is a postoperative small SS. Preoperative prone SS is useful for predicting postoperative SS. When preoperative SS in prone patients is relatively small to ideal as calculated using PI, osteotomy or other correctors should be considered to achieve satisfactory spinopelvic parameters.Level of evidenceIII.Graphic abstractThese slides can be retrieved under Electronic Supplementary Material.
Source: European Spine Journal - Category: Orthopaedics Source Type: research
Publication date: Available online 13 March 2020Source: Journal of Clinical NeuroscienceAuthor(s): Masaaki Machino, Noriaki Kawakami, Tetsuya Ohara, Toshiki Saito, Ryoji Tauchi, Shiro Imagama
Source: Journal of Clinical Neuroscience - Category: Neuroscience Source Type: research
Authors: Hey HWD, Ng NL, Loh KYS, Tan YH, Tan KA, Moorthy V, Lau ETC, Liu G, Wong HK Abstract Study Design: Prospective radiographic comparative study. Purpose: To compare and understand the load-bearing properties of each functional spinal unit (FSU) using three commonly assumed, physiological, spinal postures, namely, the flexed (slump sitting), erect (standing) and extended (backward bending) postures. Overview of Literature: Sagittal spinal alignment is posture-dependent and influences the load-bearing properties of the spine. The routine placement of intervertebral cages "as anterior as possible&q...
Source: Asian Spine Journal - Category: Orthopaedics Tags: Asian Spine J Source Type: research
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