scholarly journals The Height Gain in Scoliotic Deformity Correction: Assessed by New Predictive Formula

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Ahmet Yılmaz Şarlak ◽  
Halil Atmaca ◽  
Resul Musaoğlu ◽  
Elşen Veli Veliev
Keyword(s):  
Cobb Angle ◽  
Deformity Correction ◽  
Simple Expression ◽  
Height Loss ◽  
Mathematical Formula ◽  
Scoliotic Deformity ◽  
Scoliosis Correction ◽  
Height Gain ◽  
Predicted Height ◽  
New Formula

Height gain after scoliosis correction is of a special interest for the patient and family. Ylikoski was the first to suggest a formula predicting height loss in untreated scoliotic patients. Stokes has recently suggested a new formula by using Cobb angle to determine height loss in idiopathic curves. We hypothesized that new additional variables to Cobb angle such as apical vertebral translation (AVT), number of instrumented segments (N), and disc heights may increase the accuracy of predicted height gain. According to our findings simple expression for height gain by simplified version of the formula is:SPΔH=0.0059X1θ1 + 2.3(1−(θ2/θ1))N, whereθ1is preoperative Cobb angle,X1is preoperative AVT,θ2is postoperative Cobb angle, andNis the number of instrumented vertebra. The purpose of this study is to analyze a new mathematical formula to predict height gain after scoliotic deformity correction.

scholarly journals Deformity Correction Through the Use of Reduction Towers: 2-Dimensional Operative Video

2019 ◽  
Vol 19 (2) ◽  
pp. E157-E158
Author(s):  
Avery L Buchholz ◽  
Thomas J Buell ◽  
Mark E Shaffrey ◽  
Regis W Haid ◽  
Christopher I Shaffrey
Keyword(s):  
Cobb Angle ◽  
Sagittal Plane ◽  
Deformity Correction ◽  
X Rays ◽  
Transpedicular Instrumentation ◽  
Scoliosis Correction ◽  
Iliac Screw ◽  
Plane Deformity ◽  
Sagittal Malalignment ◽  
Sequential Reduction

Abstract Spinal deformity management can be difficult. The decision for surgery, approach, number of levels, and surgical technique all present challenges. Even when other issues are managed appropriately the process of how to correct the deformity needs special consideration. Numerous techniques have been studied including vertebra-to-rod, rod de-rotation, 3-rod-techniques, and cantilever maneuvers. While cantilever is the preferred technique when treating sagittal plane deformity, scoliosis often requires a combination of techniques due to the complexity of deformity in coronal and transverse planes. This video illustrates an adult scoliosis correction using sequential reduction towers and de-rotation techniques. Using this method the step of hook holders is eliminated and tension is distributed evenly across the rod using sequential reduction of the reduction towers across the length of the rod. This has led to a very efficient correction of our deformity as well as a powerful de-rotation tool. We routinely use this technique for flexible and rigid deformities, which is assessed pre-op with a computed tomography. The patient is a 67-yr-old female with prior lumbar decompressions and worsening back pain with radiculopathy. No significant sagittal malalignment is present but pelvic tilt is elevated and a coronal deformity exists. pelvic incidence measures 59°, LL50°, PT28° and lumbar scoliosis shows a coronal Cobb angle of 50.8°. Briefly, surgery involved transpedicular instrumentation from T10-S1 with bilateral iliac screw fixation. To achieve mobility posterior column osteotomies were performed at T12-L1, L1-2, L2-3, L3-4, L4-5, and L5-S1 levels. TLIF was performed at L4-5, L5-S1 for fusion. Postoperative scoliosis X-rays demonstrated improved sagittal and coronal alignment with PI59°, LL59°, PT22°, and coronal Cobb angle of 12°.

Functional Outcomes of Nerve Root Sparing Posterior Corpectomy in Lumbar Vertebral Burst Fractures

2021 ◽  
pp. 219256822098412
Author(s):  
Abhinandan Reddy Mallepally ◽  
Nandan Marathe ◽  
Abhinav Kumar Shrivastava ◽  
Vikas Tandon ◽  
Harvinder Singh Chhabra
Keyword(s):  
Blood Loss ◽  
Burst Fracture ◽  
Operating Time ◽  
Deformity Correction ◽  
Neurological Status ◽  
Height Loss ◽  
Vas Score ◽  
Post Surgery ◽  
Burst Fractures ◽  
The Difference

Study Design: Retrospective observational. Objectives: This study aimed to document the safety and efficacy of lumbar corpectomy with reconstruction of anterior column through posterior-only approach in complete burst fractures. Methods: In this retrospective study, we analyzed complete lumbar burst fractures treated with corpectomy through posterior only approach between 2014 and 2018. Clinical and intraoperative data including pre and post-operative neurology as per the ISNCSCI grade, VAS score, operative time, blood loss and radiological parameters, including pre and post-surgery kyphosis, height loss and canal compromise was assessed. Results: A total of 45 patients, with a mean age of 38.89 and a TLICS score 5 or more were analyzed. Preoperative VAS was 7-10. Mean operating time was 219.56 ± 30.15 minutes. Mean blood loss was 1280 ± 224.21 ml. 23 patients underwent short segment fixation and 22 underwent long segment fixation. There was no deterioration in post-operative neurological status in any patient. At follow-up, the VAS score was in the range of 1-3. The difference in preoperative kyphosis and immediate post-operative deformity correction, preoperative loss of height in vertebra and immediate post-operative correction in height were significant (p < 0.05). Conclusion: The posterior-only approach is safe, efficient, and provides rigid posterior stabilization, 360° neural decompression, and anterior reconstruction without the need for the anterior approach and its possible approach-related morbidity. We achieved good results with an all posterior approach in 45 patients of lumbar burst fracture (LBF) which is the largest series of this nature.

Lateral Thoracolumbar Listhesis as an Independent Predictor of Disability in Adult Scoliosis Patients: Multivariable Assessment Before and After Surgical Realignment

Neurosurgery ◽  
2021 ◽  
Author(s):  
Alan H Daniels ◽  
Wesley M Durand ◽  
Renaud Lafage ◽  
Andrew S Zhang ◽  
David K Hamilton ◽  
...  
Keyword(s):  
Cobb Angle ◽  
Multivariable Analysis ◽  
Deformity Correction ◽  
Adult Scoliosis ◽  
Leg Pain ◽  
Minimally Clinically Important Difference ◽  
Before And After ◽  
Plane Deformity ◽  
Numeric Scale

Abstract BACKGROUND Lateral (ie, coronal) vertebral listhesis may contribute to disability in adult scoliosis patients. OBJECTIVE To assess for a correlation between lateral listhesis and disability among patients with adult scoliosis. METHODS This was a retrospective multi-center analysis of prospectively collected data. Patients eligible for a minimum of 2-yr follow-up and with coronal plane deformity (defined as maximum Cobb angle ≥20º) were included (n = 724). Outcome measures were Oswestry Disability Index (ODI) and leg pain numeric scale rating. Lateral thoracolumbar listhesis was measured as the maximum vertebral listhesis as a percent of the superior endplate across T1-L5 levels. Linear and logistic regression was utilized, as appropriate. Multivariable analyses adjusted for demographics, comorbidities, surgical invasiveness, maximum Cobb angle, and T1-PA. Minimally clinically important difference (MCID) in ODI was defined as 12.8. RESULTS In total, 724 adult patients were assessed. The mean baseline maximum lateral thoracolumbar listhesis was 18.3% (standard deviation 9.7%). The optimal statistical grouping for lateral listhesis was empirically determined to be none/mild (&lt;6.7%), moderate (6.7-15.4%), and severe (≥15.4%). In multivariable analysis, listhesis of moderate and severe vs none/mild was associated with worse baseline ODI (none/mild = 33.7; moderate = 41.6; severe = 43.9; P &lt; .001 for both comparisons) and leg pain NSR (none/mild = 2.9, moderate = 4.0, severe = 5.1, P &lt; .05). Resolution of severe lateral listhesis to none/mild was independently associated with increased likelihood of reaching MCID in ODI at 2 yr postoperatively (odds ratio 2.1 95% confidence interval 1.2–3.7, P = .0097). CONCLUSION Lateral thoracolumbar listhesis is associated with worse baseline disability among adult scoliosis patients. Resolution of severe lateral listhesis following deformity correction was independently associated with increased likelihood of reaching MCID in ODI at 2-yr follow-up.

Height Increment and Laboratory Profile of Boys Treated With Aromatase Inhibitors With or Without Growth Hormone

2017 ◽  
Vol 49 (10) ◽  
pp. 778-785 ◽  
Author(s):  
Ludmila Pedrosa ◽  
Joice de Oliveira ◽  
Paula Thomé ◽  
Cristiane Kochi ◽  
Durval Damiani ◽  
...  
Keyword(s):  
Growth Hormone ◽  
Aromatase Inhibitors ◽  
Adult Height ◽  
Final Height ◽  
Recombinant Human Growth Hormone ◽  
Human Growth ◽  
Bone Age ◽  
Height Loss ◽  
Retrospective Data Analysis ◽  
Height Gain

AbstractAromatase inhibitors (AIs) have been used to recover height loss due to their capacity to delay growth plate closure. Long-term studies describing final heights are needed to determine the efficacy and safety profiles of these drugs for the treatment of impaired growth. This study aims to identify the therapeutic efficiency of AIs in improve growth and to describe potential adverse effects during treatment. Retrospective data analysis of 96 adolescents, among which 22 patients already attained near-final height, were followed at outpatient clinics of two referral centers. Patients were all in puberty and present idiopathic decrease in predicted adult height. Patients were treated with Anastrozole (ANZ: 1 mg/day) or Letrozole (LTZ: 2.5 mg/day) with/without recombinant human growth hormone (0.05 mg/kg/day) for 1.0 to 3.5 years (2.1±1.2 years). Height gain, body mass index, lipid, liver enzyme, gonadotropins and testosterone levels were described before and at the end of treatment. Predicted adult height (PAH) and NF height were compared with the TH. The height SDS (adjusted to bone age) significantly increased (p<0.05) in all groups [0.8±0.7 (ANZ), 0.7±0.7 (ANZ+GH), 0.3±0.5 (LTZ), and 1.2±0.8 (LTZ+GH)]; the latter group exhibited the highest increment of PAH and growth recovery to the TH (p<0.004). No significant side effects were observed. AI treatment, especially when used in association with GH was able to improve growth and the attainment of familial target height.

scholarly journals Progressive Scoliosis and Syringomyelia - Questions of Surgical Approach

Folia Medica ◽  
2018 ◽  
Vol 60 (2) ◽  
pp. 261-269 ◽  
Author(s):  
Mikhail Mikhaylovskiy ◽  
Vyacheslav Stupak ◽  
Vadim Belozerov ◽  
Nikolay Fomichev ◽  
Anatoliy Lutsik ◽  
...  
Keyword(s):  
Surgical Intervention ◽  
Surgical Correction ◽  
Neurological Deficits ◽  
Spinal Deformities ◽  
Loss Of Correction ◽  
Scoliotic Deformity ◽  
Scoliosis Correction ◽  
The Moment ◽  
Comparison Of The Results

Abstract Background: The rate of scoliosis in syringomyelia patients ranges from 25 to 74.4%. In turn, syringomyelia occurs in 1.2% to 9.7% of scoliosis patients. Aim: To evaluate outcomes of surgical correction of the scoliotic deformity in syringomyelia patients. Materials and methods: Between 1996 and 2015, 3120 patients with scoliosis of various etiologies were treated at the Clinic for Child and Adolescent Vertebrology of the Novosibirsk Research Institute of Traumatology and Orthopedics. We conducted a retrospective analysis of syringomyelia-associated scoliosis cases that required surgical correction. Results: Syringomyelia was found in 33 patients (1.05%) out of 3120 patients with spinal deformities of various etiologies; in 21 patients (0.9%) with idiopathic scoliosis of 2334 patients. In identifying the neurological deficit, the recommended first step is to perform neurosurgery. Nineteen patients were operated using the CDI, 4 patients underwent correction VEPTR, in 1 case instrumentation could not be established, 9 patients are undergoing treatment in the department of neurosurgery at the moment. Worsening of neurological deficits was not observed in any patient. Conclusion: A comparison of the results of syringomyelia-associated scoliosis correction with the data of other authors was done. The choice of surgery tactics is strictly individual and depends on the size of the cavity. The result of surgical intervention is generally positive and the loss of correction by the end of follow-up is negligible.

Concave or convex rod translation first in adolescent idiopathic scoliosis instrumentation with differential rod contouring?

2021 ◽  
Author(s):  
X Wang ◽  
CE Aubin ◽  
RM Schwend
Keyword(s):  
Adolescent Idiopathic Scoliosis ◽  
Idiopathic Scoliosis ◽  
Cobb Angle ◽  
Thoracic Kyphosis ◽  
Deformity Correction ◽  
Vertebral Rotation ◽  
Convex Side ◽  
Bone Screw ◽  
Apical Vertebral Rotation ◽  
Clinically Significant

The objective was to assess deformity correction and bone-screw force associated respectively with concave manipulation first, convex manipulation first, and different differential rod contouring configurations. Instrumentation scenarios were computationally simulated for 10 AIS cases with mean thoracic Cobb angle (MT) of 54±8°, apical vertebral rotation (AVR) of 19±2° and thoracic kyphosis of 21±9°. Instrumentations with major correction maneuvers using the concave side rod were first simulated; instrumentations with major correction maneuvers using the convex side rod were then simulated. Simulated correction maneuvers were concave/convex rod translation followed by apical vertebral derotation and then convex/concave rod translation. There were no significant differences in deformity corrections and bone-screw forces between concave rod translation first and convex rod translation first with differential rod contouring. Increasing differential rod contouring angle and concave rod diameter improved AVR correction and increased the TK and bone-screw forces; the effect on the MT Cobb angle was not clinically significant.

scholarly journals EVALUATION OF THE VEPTR SYSTEM IN THE MANAGEMENT OF SPINAL DEFORMITIES BETWEEN 2008 AND 2014 AT THE ROOSEVELT INSTITUTE

2018 ◽  
Vol 17 (4) ◽  
pp. 266-269
Author(s):  
Carlos Segundo Montero ◽  
David Meneses ◽  
Fernando Alvarado ◽  
Wilmer Godoy ◽  
Maria Margarita Acosta ◽  
...  
Keyword(s):  
Cobb Angle ◽  
Early Onset ◽  
Case Series ◽  
Deformity Correction ◽  
Congenital Scoliosis ◽  
Neuromuscular Scoliosis ◽  
Three Dimensions ◽  
Thoracic Wall ◽  
Level Of Evidence ◽  
Radiographic Images

ABSTRACT Objective: Traditional surgical treatments, such as on-site fusion and hemiepiphysiodesis, have not addressed chest deformity in its three dimensions, and are usually insufficient and unpredictable for the management of congenital and neuromuscular scoliosis. The application of the Vertical Expandable Prosthetic Titanium Rib (VEPTR) is a technique developed to treat early-onset progressive scoliosis that elongates the spine and thoracic wall, allowing adequate lung development. Methods: A case series retrospective study was conducted. We included 23 patients, including fifteen females and eight males diagnosed with congenital and neuromuscular scoliosis, who were treated with VEPTR type implants between January 2008 and May 2014. We obtained data about the implant and pre and postoperative radiographic images to assess the magnitude of the curve, and we measured the Cobb angle and length after lengthening, as well as evaluating the complications found. Results: There was an improvement in the postoperative Cobb angle. In patients with congenital scoliosis, deformity correction was 8.6% (p=0.014), and in neuromuscular scoliosis, we observed deformity correction of 19.5% (p=0.009). Likewise, we found gains in thoracic height through the device, which results in an average 10% lengthening of the spine in congenital scoliosis. In this study, we identified complications such as material migrations, rib synostosis, pressure zones, rib fracture, hemothorax, and deep wound infection. Conclusion: The natural history of progressive spinal deformity was improved in most of the minors, through the use of VEPTR. This allows us to continue managing patients in the future, in order to make a deeper assessment of its performance in treatment of early onset scoliosis. Level of Evidence III; Therapeutic studies - Investigating the results of a treatment.

scholarly journals Minimally invasive lateral approach for adult degenerative scoliosis: lessons learned

2013 ◽  
Vol 35 (2) ◽  
pp. E4 ◽  
Author(s):  
Armen R. Deukmedjian ◽  
Amir Ahmadian ◽  
Konrad Bach ◽  
Alexandros Zouzias ◽  
Juan S. Uribe
Keyword(s):  
Minimally Invasive ◽  
Cobb Angle ◽  
Clinical Outcomes ◽  
Lumbar Lordosis ◽  
Traditional Approach ◽  
Lateral Approach ◽  
Lessons Learned ◽  
Degenerative Scoliosis ◽  
Adult Degenerative Scoliosis ◽  
Scoliosis Correction

Object Lateral minimally invasive thoracolumbar instrumentation techniques are playing an increasing role in the treatment of adult degenerative scoliosis. However, there is a paucity of data in determining the ideal candidate for a lateral versus a traditional approach, and versus a hybrid construct. The objective of this study is to present a method for utilizing the lateral minimally invasive surgery (MIS) approach for adult spinal deformity, provide clinical outcomes to validate our experience, and determine the limitations of lateral MIS for adult degenerative scoliosis correction. Methods Radiographic and clinical data were collected for patients who underwent surgical correction of adult degenerative scoliosis between 2007 and 2012. Patients were retrospectively classified by degree of deformity based on coronal Cobb angle, central sacral vertical line (CSVL), pelvic incidence, lumbar lordosis (LL), sagittal vertical axis (SVA), pelvic tilt (PT), presence of comorbidities, bone quality, and curve flexibility. Patients were placed into 1 of 3 groups according to the severity of deformity: “green” (mild), “yellow” (moderate), and “red” (severe). Clinical outcomes were determined by a visual analog scale (VAS) and the Oswestry Disability Index (ODI). Results Of 256 patients with adult degenerative scoliosis, 174 underwent a variant of the lateral approach. Of these 174 patients, 27 fit the strict inclusion/exclusion criteria (n = 9 in each of the 3 groups). Surgery in 17 patients was dictated by their category, and 10 were treated with surgery outside of their classification. The average age was 61 years old and the mean follow-up duration was 17 months. The green and yellow groups experienced a reduction in coronal Cobb angle (12° and 11°, respectively), and slight changes in CSVL, SVA, and PT, and LL. In the green group, the VAS and ODI improved by 35 and 17 points, respectively, while in the yellow group they improved by 36 and 33 points, respectively. The red subgroup showed a 22° decrease in coronal Cobb angle, 15° increase in LL, and slight changes in PT and SVA. Three patients placed in the yellow subgroup had “green” surgery, and experienced a coronal Cobb angle and LL decrease by 17° and 10°, respectively, and an SVA and PT increase by 1.3 cm and 5°, respectively. Seven patients placed in the red group who underwent “yellow” or “green” surgery had a reduction in coronal Cobb angle of 16°, CSVL of 0.1 cm, SVA of 2.8 cm, PT of 4°, VAS of 28 points, and ODI of 12 points; lumbar lordosis increased by 15°. Perioperative complications included 1 wound infection, transient postoperative thigh numbness in 2 cases, and transient groin pain in 1 patient. Conclusions Careful patient selection is important for the application of lateral minimally invasive techniques for adult degenerative scoliosis. Isolated lateral interbody fusion with or without instrumentation is suitable for patients with preserved spinopelvic harmony. Moderate sagittal deformity (compensated with pelvic retroversion) may be addressed with advanced derivatives of the lateral approach, such as releasing the anterior longitudinal ligament. For patients with severe deformity, the lateral approach may be used for anterior column support and to augment arthrodesis.

scholarly journals Limitations and ceiling effects with circumferential minimally invasive correction techniques for adult scoliosis: analysis of radiological outcomes over a 7-year experience

2014 ◽  
Vol 36 (5) ◽  
pp. E14 ◽  
Author(s):  
Neel Anand ◽  
Eli M. Baron ◽  
Babak Khandehroo
Keyword(s):  
Minimally Invasive ◽  
Cobb Angle ◽  
Lumbar Lordosis ◽  
Sagittal Plane ◽  
Adult Scoliosis ◽  
Angle Correction ◽  
Scoliosis Correction ◽  
Spinopelvic Parameter ◽  
Ceiling Effects ◽  
The Mean

Object Minimally invasive correction of adult scoliosis is a surgical method increasing in popularity. Limited data exist, however, as to how effective these methodologies are in achieving coronal plane and sagittal plane correction in addition to improving spinopelvic parameters. This study serves to quantify how much correction is possible with present circumferential minimally invasive surgical (cMIS) methods. Methods Ninety patients were selected from a database of 187 patients who underwent cMIS scoliosis correction. All patients had a Cobb angle greater than 15°, 3 or more levels fused, and availability of preoperative and postoperative 36-inch standing radiographs. The mean duration of follow-up was 37 months. Preoperative and postoperative Cobb angle, sagittal vertical axis (SVA), coronal balance, lumbar lordosis (LL), and pelvic incidence (PI) were measured. Scatter plots were performed comparing the pre- and postoperative radiological parameters to calculate ceiling effects for SVA correction, Cobb angle correction, and PI-LL mismatch correction. Results The mean preoperative SVA value was 60 mm (range 11.5–151 mm); the mean postoperative value was 31 mm (range 0–84 mm). The maximum SVA correction achieved with cMIS techniques in any of the cases was 89 mm. In terms of coronal Cobb angle, a mean correction of 61% was noted, with a mean preoperative value of 35.8° (range 15°–74.7°) and a mean postoperative value of 13.9° (range 0°–32.5°). A ceiling effect for Cobb angle correction was noted at 42°. The ability to correct the PI-LL mismatch to 10° was limited to cases in which the preoperative PI-LL mismatch was 38° or less. Conclusions Circumferential MIS techniques as currently used for the treatment of adult scoliosis have limitations in terms of their ability to achieve SVA correction and lumbar lordosis. When the preoperative SVA is greater than 100 mm and a substantial amount of lumbar lordosis is needed, as determined by spinopelvic parameter calculations, surgeons should consider osteotomies or other techniques that may achieve more lordosis.

Scoliosis Correction Surgery in Collagen Type VI Dysfunction

2020 ◽  
Author(s):  
Babak Mirzashahi ◽  
Furqan Mohammed Yaseen Khan ◽  
Rasul Gharakhan-Maleki
Keyword(s):  
Respiratory Distress ◽  
Deformity Correction ◽  
Mineral Density ◽  
Case Presentation ◽  
Muscular Disorders ◽  
Fatty Replacement ◽  
Scoliosis Correction ◽  
Minimize Blood Loss ◽  
Correction Surgery

Background: Collagen VI (COLVI) dysfunction results in a combination of connective tissue and muscular disorders. Spinal involvement and development of scoliosis precede loss of ambulation and respiratory deterioration in these patients. Therefore, spinal deformity correction surgery is warranted to preserve ambulation and respiratory function. Case Presentation: A twelve-year-old girl presented with progressive scoliosis accompanying respiratory deterioration, sitting imbalance, and wheelchair-bound. The patient demonstrated an array of overlapping phenotypes related to COLVI dysfunction, including developmental delay, muscular dystrophy (MD), fatty replacement of skeletal muscles, and reduced bone mineral density to mention few. Patient was diagnosed with COLVI dysfunction caused by COLVI alpha 2 (COL6A2) gene mutation. She had severe phenotype expression similar to Ullrich congenital MD (UCMD). A Cobb angle of 85 degrees and thoracic kyphosis of 40 degrees were recorded. Surgical correction was performed in form of spinal fusion from T4 to S1 in addition to multiple level vertebral osteotomies. Conclusions: Respiratory distress and ambulatory problems are life-endangering events in these patients. As the disease progresses and respiratory distress increases, anesthesia becomes more difficult and the risk of surgery increases. Therefore, early intervention for correction of scoliosis is warranted to support the quality of life. Surgical time has to be kept as short as possible to minimize blood loss in these patients.

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