scholarly journals Relationship between odontoid fracture angle and cervical sagittal balance

2021 ◽  
Vol 12 ◽  
pp. 157
Author(s):  
Colin Gold ◽  
Scott Seaman ◽  
Satoshi Yamaguchi
Keyword(s):  
Sagittal Balance ◽  
Motor Vehicle ◽  
Odontoid Process ◽  
Ground Level ◽  
Odontoid Fracture ◽  
X Rays ◽  
Posterior Angle ◽  
Sagittal Vertical Axis ◽  
Fracture Angle ◽  
Cervical Sagittal Balance

Background: Fractures can occur in various locations within the odontoid process with differing orientations. However, little is known about what factors contribute to the anterior versus posterior angles/orientation of these fractures. Methods: We evaluated 74 patients with odontoid fractures (2013–2018) from a single-institution. Patients’ fracture angles/orientations were measured on computed tomography studies, and were grouped into oblique posterior (OP) or oblique anterior (OA) groups. We also took into account cervical sagittal balance utilizing upright x-rays. Other variables studied included patients’ ages, sagittal balance measurements, and the mechanisms of injury. Results: Fracture angles were significantly steeper in the OP group. OP fractures had larger C2-C7 sagittal vertical axis, occiput-C2 angles, and occiput-C7 angles versus anteriorly oriented fractures. In our linear regression model, advanced age and large occiput-C2 angles were predictive of the odontoid fracture angle. Patients who sustained ground-level falls also had significantly steeper fracture angles versus those involved in motor vehicle accidents. Conclusion: The odontoid tends to fracture at a steep, posterior angle in elderly patients who demonstrate a large positive sagittal balance when the head is extended following a ground-level falls.

Traumatic Type III odontoid fracture and severe rotatory atlantoaxial subluxation in a 3-year-old child

2010 ◽  
Vol 5 (2) ◽  
pp. 200-203 ◽  
Author(s):  
David Panczykowski ◽  
Andrew N. Nemecek ◽  
Nathan R. Selden
Keyword(s):  
Motor Vehicle ◽  
Odontoid Process ◽  
Odontoid Fracture ◽  
Motor Vehicle Crash ◽  
Lateral Mass ◽  
Cervical Spine Injuries ◽  
Type Iii ◽  
Spine Injuries ◽  
True Type ◽  
Rotatory Subluxation

In this report, the authors describe the case of a 3-year-old child with a traumatic Type III odontoid fracture. To their knowledge, this is the first reported case of a true Type III odontoid fracture with atlantoaxial rotatory subluxation in a child. The patient presented with pain and had resisted manipulation of the neck following a motor vehicle crash. Plain cervical radiographs revealed an odontoid fracture, which was confirmed by CT imaging. The left lateral mass of C-1 was rotated anterior to that of C-2 with the displaced odontoid process acting as the pivot point of rotation. The C1–2 alignment was normalized, and the C-2 fracture was reduced completely. The regional anatomy and mechanism of injury, radiographic diagnosis, and management of cervical spine injuries in children are discussed.

scholarly journals Odontoid fracture that is not listed in the existing classifications A new subtype of odontoid fracture: case report

2016 ◽  
Vol 30 (1) ◽  
pp. 57-64 ◽  
Author(s):  
D. Adam ◽  
R. Cergan ◽  
D. Iftimie ◽  
Cristiana Moisescu
Keyword(s):  
Rare Case ◽  
Clinical Presentation ◽  
Treatment Strategies ◽  
Odontoid Process ◽  
Ground Level ◽  
Odontoid Fracture ◽  
Type Ii ◽  
Fracture Type ◽  
Cervical Trauma ◽  
The Right

Abstract Background: There is a significant variety of odontoid fracture classifications along with corresponding treatment strategies. There are though cases which cannot be framed within the existing classifications. Clinical presentation: We report the case of a 91 years old female patient who suffered a cervical trauma secondary to a ground level fall. The cervical CT scan revealed a particular type of odontoid fracture, unframeable within existing classifications. The fracture line was at the base of the odontoid process and continued in an oblique trajectory through the right pedicle of the axis. As treatment strategy, we opted for external immobilization in a Minerva jacket and, after 3 months, the patient is symptom free, with partial bone fusion. Conclusion: We named this rare case of odontoid fracture type II B for which external immobilization seems sufficient.

Cervical 1-2 Posterior Instrumented Fusion Utilizing Computer-Assisted Navigation With Harvest of Rib Strut Autograft: 2-Dimensional Operative Video

2021 ◽  
Author(s):  
Timothy J Yee ◽  
Michael J Strong ◽  
Matthew S Willsey ◽  
Mark E Oppenlander
Keyword(s):  
Surface Area ◽  
Odontoid Process ◽  
Odontoid Fracture ◽  
Patient Specific ◽  
Computer Assisted ◽  
Type Ii ◽  
Instrumented Fusion ◽  
Assisted Navigation ◽  
Patient Consent ◽  
Posterior Instrumented Fusion

Abstract Nonunion of a type II odontoid fracture after the placement of an anterior odontoid screw can occur despite careful patient selection. Countervailing factors to successful fusion include the vascular watershed zone between the odontoid process and body of C2 as well as the relatively low surface area available for fusion. Patient-specific factors include osteoporosis, advanced age, and poor fracture fragment apposition. Cervical 1-2 posterior instrumented fusion is indicated for symptomatic nonunion. The technique leverages the larger posterolateral surface area for fusion and does not rely on bony growth in a watershed zone. Although loss of up to half of cervical rotation is expected after C1-2 arthrodesis, this may be better tolerated in the elderly, who may have lower physical demands than younger patients. In this video, we discuss the case of a 75-yr-old woman presenting with intractable mechanical cervicalgia 7 mo after sustaining a type II odontoid fracture and undergoing anterior odontoid screw placement at an outside institution. Cervical radiography and computed tomography exhibited haloing around the screw and nonunion across the fracture. We demonstrate C1-2 posterior instrumented fusion with Goel-Harms technique (C1 lateral mass and C2 pedicle screws), utilizing computer-assisted navigation, and modified Sonntag technique with rib strut autograft.  Posterior C1-2-instrumented fusion with rib strut autograft is an essential technique in the spine surgeon's armamentarium for the management of C1-2 instability, which can be a sequela of type II dens fracture. Detailed video demonstration has not been published to date.  Appropriate patient consent was obtained.

scholarly journals Lumbar Level Significantly Influences Postoperative Global Sagittal Balance Following Pedicle Subtraction Osteotomy

2021 ◽  
pp. 219256822110325
Author(s):  
Athan G. Zavras ◽  
T. Barrett Sullivan ◽  
Navya Dandu ◽  
Howard S. An ◽  
Christopher J. DeWald ◽  
...  
Keyword(s):  
Sagittal Balance ◽  
Sagittal Alignment ◽  
Adult Spinal Deformity ◽  
Vertical Axis ◽  
Pedicle Subtraction Osteotomy ◽  
Current Evidence ◽  
Sacral Slope ◽  
Sagittal Vertical Axis ◽  
Lumbar Level ◽  
Global Sagittal Alignment

Study Design: Retrospective cohort study. Objectives: The current evidence regarding how level of lumbar pedicle subtraction osteotomy (PSO) influences correction of sagittal alignment is limited. This study sought to investigate the relationship of lumbar level and segmental angular change (SAC) of PSO with the magnitude of global sagittal alignment correction. Methods: This study retrospectively evaluated 53 consecutive patients with adult spinal deformity who underwent lumbar PSO at a single institution. Radiographs were evaluated to quantify the effect of PSO on lumbar lordosis (LL), thoracic kyphosis (TK), sacral slope (SS), pelvic tilt (PT), pelvic incidence (PI), T1-spinopelvic inclination (T1SPI), T1-pelvic alignment (TPA), and sagittal vertical axis (SVA). Results: Significant correlations were found between PSO SAC and the postoperative increase in LL ( r = 0.316, P = .021) and PT ( r = 0.352, P = .010), and a decrease in TPA ( r = −0.324, P = .018). PSO level significantly correlated with change in T1SPI ( r = −0.305, P = .026) and SVA ( r = −0.406, P = .002), with more caudal PSO corresponding to a greater correction in sagittal balance. On multivariate analysis, more caudal PSO level independently predicted a greater reduction in T1SPI (β = −3.138, P = .009) and SVA (β = −29.030, P = .001), while larger PSO SAC (β = −0.375, P = .045) and a greater number of fusion levels (β = −1.427, P = .036) predicted a greater reduction in TPA. Conclusion: This study identified a gain of approximately 3 degrees and 3 cm of correction for each level of PSO more caudal to L1. Additionally, a larger PSO SAC predicted greater improvement in TPA. While further investigation of these relationships is warranted, these findings may help guide preoperative PSO level selection.

Cervical sagittal balance: a biomechanical perspective can help clinical practice

2017 ◽  
Vol 27 (S1) ◽  
pp. 25-38 ◽  
Author(s):  
Avinash G. Patwardhan ◽  
Saeed Khayatzadeh ◽  
Robert M. Havey ◽  
Leonard I. Voronov ◽  
Zachary A. Smith ◽  
...  
Keyword(s):  
Clinical Practice ◽  
Sagittal Balance ◽  
Cervical Sagittal Balance

scholarly journals PARAMETERS FOR THE EVALUATION OF CERVICAL SAGITTAL BALANCE IN IDIOPATHIC SCOLIOSIS

2017 ◽  
Vol 16 (1) ◽  
pp. 38-41
Author(s):  
MAURICIO COELHO LIMA ◽  
MARCELO ITALO RISSO NETO ◽  
GUILHERME REBECHI ZUIANI ◽  
IVAN GUIDOLIN VEIGA ◽  
MARCOS ANTONIO TEBET ◽  
...  
Keyword(s):  
Idiopathic Scoliosis ◽  
Sagittal Balance ◽  
Sagittal Plane ◽  
Lateral View ◽  
Plumb Line ◽  
Cervical Lordosis ◽  
Thoracic Inlet ◽  
Mean Values ◽  
Cervical Sagittal Balance ◽  
The Mean

ABSTRACT Objective: There are no values defined as standard in the literature for the parameters of assessment of cervical sagittal balance in patients with idiopathic scoliosis. This study describes the sagittal cervical parameters in patients with idiopathic scoliosis. Methods: Study carried out in a tertiary public hospital in patients with adolescent idiopathic scoliosis, through the evaluation of panoramic radiographs in lateral view. The Cobb method was used to evaluate cervical lordosis from C2 to C7, distance from the center of gravity (COG) of the skull to C7, measurement of T1 slope, thoracic inlet angle (TIA), neck tilt, and plumb line from C7 to S1 (SVA C7-S1). A statistical analysis was performed, to demonstrate the relationship between the alignment of the thoracic spine in the sagittal plane and the cervical sagittal balance of patients with scoliosis. Results: Thirty-four patients were female (69.4%) and 15 male (30.6%). The mean values for COG-C7 were 0.71 mm (median 0.8 mm/standard deviation [SD]= 0.51 mm). For Cobb C2-C7, the mean was -11.7° (median -10°/SD= 20.4°). The mean slope of T1 was 23.5° (median 25°/SD= 9.5°). The mean cervical version was 58.8° (median 60°/DP= 15.4°). The mean TIA was 81.8° (median 85°/SD= 16.7°). The mean plumb line C7-S1 was -0.28 (-0.3/SD= 1.0). Conclusion: The analysis of the results showed that the mean values for the cervical lordosis are lower than the values described as normal in the literature, suggesting a loss of sagittal cervical balance in these patients.

scholarly journals Rehabilitation Strategies in Management of Complex Case of Cervical Burst Fracture- A Case Report

2021 ◽  
pp. 205-208
Author(s):  
Rishika H. Gabada ◽  
Pooja Kasatwar ◽  
Chaitanya A. Kulkarni
Keyword(s):  
Ct Scan ◽  
Vertebral Body ◽  
Motor Vehicle ◽  
Burst Fracture ◽  
Compression Fracture ◽  
Complex Case ◽  
Fracture Dislocation ◽  
X Rays ◽  
Spinal Compression ◽  
Spinal Compression Fracture

A burst fracture is a descriptive term for an injury to the spine in which the vertebral body is severely compressed. They typically occur from severe trauma, such as a motor vehicle accident or a fall from a height. With a great deal of force vertically onto the spine, a vertebra may be crushed .If it is only crushed in the front part of the spine, it becomes wedge shaped and is called a compression fracture. However, if the vertebral body is crushed in all directions it is called a burst fracture. Burst fractures cause severe pain. The diagnosis of a burst fracture is usually made by x-rays and a CT scan. Occasionally, an MRI scan may be ordered as well, in order to assess the amount of soft tissue trauma, bleeding or ligament disruption. The review of the CT scan and x-rays allows the treating physician to make a determination as to the level of the fracture, whether it is a compression fracture, burst fracture or fracture dislocation. A spinal compression fracture also may be caused by trauma to the spine. Events that may cause trauma to the spine can include: A car accident, a hard fall or a fall from a height of more than 15 feet, landing on the feet, and a blow to the head. Any fall from a standing height that results in a spinal compression fracture or any other fracture most likely indicates weak bones due to osteoporosis. The physical exam should be performed to document both spinal deformity, that is, angulation of the spine or tenderness of the spine at the level of fracture, as well as, a neurologic exam. Neurologic exam should include testing of the muscle strength, sensation, and reflexes of the lower extremities, as well as, testing of bowel and bladder sphincter control. A 36 year old man was brought to the hospital as he had a fall from electric pole approximately 20 feet height. He had sustaining injury to the neck. Surgery was done as patient was diagnosed with C6 burst fracture with fracture dislocation of C5-C7. Therapeutic Interventions includes exercises, strengthening exercises, cervical fracture fixation, and traction.

scholarly journals The application of C2 transpedicular screw, C1 laminar hook fixation and bone graft in the atlantoaxial instability

2021 ◽  
Vol 38 (2) ◽  
pp. 94-98
Author(s):  
Şükrü ORAL
Keyword(s):  
Motor Vehicle ◽  
Motor Vehicle Accident ◽  
Surgical Techniques ◽  
Atlantoaxial Instability ◽  
Posterior Arch ◽  
X Rays ◽  
Advantages And Disadvantages ◽  
Transpedicular Screw ◽  
Flexion Extension ◽  
Laminar Hooks

Traumatic atlantoaxial instability usually results from a motor vehicle accident, falls and motorcycle accidents. Atlantoaxial instability can lead to spinal cord compression and neck pain, but, spasticity and radicular symptoms as well. The purpose of surgery is to remove the compression and stabilize the joint permanently. To date, several surgical techniques have been described to remedy C1-C2 instability. In this study, the clinical and radiological outcomes of patients who operated with the C1 (Atlas bone) laminar hooks fixation and bilateral C2 (Axis bone) trans-pedicular screw technique were shown. Also, the advantages and disadvantages of this technique are discussed. From March 2010 to December 2017, 12 patients who have atlantoaxial instability were surgically treated by modified fixation technique which consists C1 laminar hooks fixation and bilateral C2 transpedicular screw. Twelve patients were operated with this procedure from March 2010 to December 2017. All the patients were checked with flexion-extension x-rays at the end of the twelfth week. The posterior bony fusion formation was observed on imaging in all patients. C2 bilateral pedicle screw combined with C1 laminar hook system is a good method for atlantoaxial instability in the conditions which is not convenient for insertion of C1 lateral mass and C2 trans-articular screw. However, this method may not be available in some cases such as traumatic, infection, neoplastic or degenerative pathologies in which the posterior arch of the atlas is damaged.

scholarly journals Chronic infectious lesions of the cervical spine in adults: monocentric cohort analysis and literature review

2021 ◽  
Vol 18 (3) ◽  
pp. 68-76
Author(s):  
D. G. Naumov ◽  
S. G. Tkach ◽  
A. Yu. Mushkin ◽  
M. E. Makogonova
Keyword(s):  
Cervical Spine ◽  
Surgical Treatment ◽  
Sagittal Balance ◽  
Cohort Analysis ◽  
Pain Syndrome ◽  
Vertical Axis ◽  
Sagittal Vertical Axis ◽  
Comorbidity Index ◽  
Anterior Reconstruction ◽  
Infectious Spondylitis

Objective. To analyze the results of surgical treatment of chronic infectious cervical spondylitis and literature data.Material and Methods. Design: retrospective monocentric cohort study for 2017–2020. The study included medical history and clinical and instrumental data of 25 patients who underwent 28 reconstructive surgeries on the suboccipital (n1 = 3) and subaxial (n2 = 25) spine. The average follow-up period was 1 year 2 months ± 4 months. Statistical analysis was performed using the Statistical Package for the Social Sciences (SPSS), version 22.0.Results. The effect of the duration of the therapeutic pause (p = 0.043) and the T1 slope (T1S) (p = 0.022) on the intensity of vertebrogenic pain syndrome was established. When assessing the parameters of the sagittal balance a direct relationship between the age of patients and the value of cervical sagittal vertical axis (CSVA) (p = 0.035) was revealed, while CSVA (p = 0.514) and neck tilt angle (NTA) (p = 0.617) did not significantly affect the intensity of vertebral pain syndrome. The extent of vertebral destruction did not affect either the intensity of vertebral pain (p = 0.872) or the indices of the sagittal balance: CSVA (p = 0.116), T1S (p = 0.154), and NTA (p = 0.562). A significant predictor of postoperative complications is the level of comorbidity with an index of 7 or more (p = 0.027) according to the Charlson scale.Conclusion. The leading predictors of complications of surgical treatment of cervical infectious spondylitis are the Charlson comorbidity index (7 points or more) and the variant of anterior reconstruction (the use of a blocked extraspinal plate). The factors influencing the intensity of vertebrogenic pain syndrome in this pathology are the duration of the therapeutic pause and the magnitude of T1S compensation. Anterior reconstruction of the cervical spine in the presence of infectious spondylitis provides a correction of the sagittal balance parameters, with the possibility of long-term maintaining the achieved values.

Management of two-level proximal femoral fractures

2021 ◽  
Vol 14 (5) ◽  
pp. e240684
Author(s):  
Thom Pauline Maria Johannes Vluggen ◽  
Raoul van Vugt ◽  
Bert Boonen ◽  
Mark Hendrik Franciscus Keulen
Keyword(s):  
Three Dimensional ◽  
Femoral Fractures ◽  
Ground Level ◽  
Proximal Femoral Fracture ◽  
Fracture Pattern ◽  
Primary Osteoporosis ◽  
X Rays ◽  
Greater Trochanter ◽  
Subsequent Increase ◽  
Adequate Treatment

We present the case of an 82-year-old female, who experienced a ground-level fall on the trochanter of the right femur. X-rays showed a proximal femoral fracture (PFF) with an unclear and unusual fracture pattern. Three-dimensional CT images were obtained and showed a displaced femoral neck fracture and ipsilateral fracture of the greater trochanter. Our patient underwent unipolar hemiarthroplasty and fixation of the greater trochanter with a hook plate and cable grip. At 11 months, functional outcomes, patient satisfaction and quality of life were excellent. Primary osteoporosis was diagnosed and treatment with bisphosphonates was initiated.Two-level PFFs are rare and complex. Due to ageing and a subsequent increase in osteoporosis, numbers of PFFs with complex fracture patterns might increase in the future. Adequate treatment and early prevention of osteoporosis are key to reduce this risk and lower the overall burden. Surgical treatment should be patient-tailored and focus on minimising the risk of complications and reinterventions.

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