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1.
Int J Orthop Trauma Nurs ; 53: 101083, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38336571

RESUMO

INTRODUCTION: Upper cervical spine fractures are commonplace in the elderly following low energy trauma. These injuries carry high mortality rates, similar to patients sustaining hip fractures. A key aspect affecting clinical outcome is effective management in the first 12 weeks following injury. This study aims to assess the understanding of healthcare staff that may be required to care for such patients. MATERIALS AND METHODS: A survey was carried out over a single day at the UK's largest Spine Specialist referral centre (Salford Royal Foundation Trust, SRFT) assessing the understanding of healthcare staff of the term, 'Collar with occipital extension', by asking staff to identify the safe position of the neck when looking at clinical images of a model in a collar in various different neck positions. The participants demographics were then taken, including profession, grade, spinal/post graduate experience, if English is their first language and their understanding of the term 'Collar with occipital extension'. RESULTS: 102 participants were interviewed and the results showed almost half (45.1%) of participants selecting an incorrect hyperextended neck to be a safe position for conservative treatment and only 37.3% selecting the neutral position as satisfactory. The only positive predictors identified for those selective the neutral safe cervical spine alignment was if participants had >5 years of previous spinal experience (p = 0.0006) or if they understood the term 'Collar with occipital extension' to be describing the collar component (p = 0.000013) and not neck position. CONCLUSION: Management of spinal injuries are classically poorly managed in non-spinal centres, possibly due to the lack of training and understanding within the spinal speciality. This study shows the importance of clearly communicating with referring hospitals exactly how to conservatively manage patients with high cervical injuries to best improve clinical outcome.


Assuntos
Fraturas da Coluna Vertebral , Humanos , Reino Unido , Masculino , Feminino , Centros de Atenção Terciária , Vértebras Cervicais/lesões , Inquéritos e Questionários
2.
Int J Gen Med ; 17: 457-469, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38344681

RESUMO

Objective: To assess halo vest applications for type II and III odontoid fractures and to ascertain the radiological and clinical outcomes of this approach. Methods: A cross-sectional retrospective study was conducted by reviewing the medical charts of selected patients having type II and III odontoid fractures who underwent halo vest treatment at the King Saud Medical City Orthopaedic Department. Radiographic evaluations for the cervical spine (anterior-posterior, lateral, and open-mouth views) were used. Computed tomography scans were used to delineate the extent of the fracture and to measure the magnitude of displacement, the degree of the angulation, the vertebrae involved, and the fracture type. Results: A total of 45 patients with odontoid fractures (55.6% of the patients with type II odontoid fractures and 44.4% of patients with type III) received halo vest treatment. In the present study, in type II odontoid fractures, union was achieved in 15.6% of patients, 28.9% of patients had malunion and 11.1% had nonunion. In type III odontoid fractures, union cases comprised 15.6% of patients, while malunion cases accounted for 28.9% of patients and nonunion cases were found in 4.4% of the patients. Conclusion: The halo vest management for type II and III odontoid fracture requires a prolonged course of cervical immobilisation. Multiple factors contribute to the alteration of the management protocol, patient adherence, and difficulties related to HV, and a significant rate of reduction loss ultimately results in malunion or nonunion.

3.
World Neurosurg ; 184: 112-118, 2024 04.
Artigo em Inglês | MEDLINE | ID: mdl-38266989

RESUMO

BACKGROUND: Combined triple atlas (C1)-axis (C2) fixation has been described in previous literature as a safe, effective, and minimally invasive procedure for complex atlas and odontoid fractures that allows for a greater range of motion compared with posterior approaches and atlanto-occipital fusion. However, it is rarely performed due to the occipital-cervical diastasis resulting from often-fractured C1 joint masses. No evidence-based consensus has been reached regarding the treatment of complex atlantoaxial fractures, and the choice of surgical strategy is based only on clinical experience. METHODS: We report the combined triple C1-C2 fixation technique with manual reduction of the joint masses during patient positioning on the operating table, which allowed for effective stabilization during a single surgical session. We describe our experience in the management of a 75-year-old patient presenting with an acute complex type II fracture of C1, which also involved 1 lateral mass, combined with a type II odontoid fracture and occipital-cervical diastasis. RESULTS: We provide a step-by-step guide for combined triple C1-C2 anterior fixation with manual fracture reduction and describe the clinical case of an acute complex type II fracture of C1, which also involved 1 lateral mass, combined with a type II odontoid fracture and occipital-cervical diastasis. CONCLUSIONS: Combined triple C1-C2 fixation represents a safe and efficient minimally invasive anterior approach for complex type II fractures of C1 with type II odontoid fractures. Manual reduction of the joint masses during patient positioning allows for effective stabilization in a single surgical session.


Assuntos
Fraturas Ósseas , Lesões do Pescoço , Processo Odontoide , Fraturas da Coluna Vertebral , Humanos , Idoso , Processo Odontoide/diagnóstico por imagem , Processo Odontoide/cirurgia , Processo Odontoide/lesões , Fraturas da Coluna Vertebral/diagnóstico por imagem , Fraturas da Coluna Vertebral/cirurgia , Parafusos Ósseos , Fixação de Fratura , Fixação Interna de Fraturas/métodos
4.
Spine J ; 24(4): 682-691, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38101547

RESUMO

BACKGROUND CONTEXT: Type II odontoid fractures (OF) are among the most common cervical spine injuries in the geriatric population. However, there is a paucity of literature regarding their epidemiology. Additionally, the optimal management of these injuries remains controversial, and no study has evaluated the short-term outcomes of geriatric patients presenting to emergency departments (ED). PURPOSE: This study aims to document the epidemiology of geriatric patients presenting to EDs with type II OFs and determine whether surgical management was associated with early adverse outcomes such as in-hospital mortality and discharge to skilled nursing facilities (SNF). STUDY DESIGN: This is a retrospective cohort study. PATIENT SAMPLE: Data was used from the 2016-2020 Nationwide Emergency Department Sample. Patient encounters corresponding to type II OFs were identified. Patients younger than 65 at the time of presentation to the ED and those with concomitant spinal pathology were excluded. OUTCOME MEASURES: The association between the surgical management of geriatric type II OFs and outcomes such as in-hospital mortality and discharge to SNFs. METHODS: Patient, fracture, and surgical management characteristics were recorded. A propensity score matched cohort was constructed to reduce differences in age, comorbidities, and injury severity between patients undergoing operative and nonoperative management. Additionally, to develop a positive control for the analysis of geriatric patients with type II OFs and no other concomitant spinal pathology, a cohort of patients that had been excluded due to the presence of a concomitant spinal cord injury (SCI) was also constructed. Multivariate regressions were then performed on both the matched and unmatched cohorts to ascertain the associations between surgical treatment and in-hospital mortality, inpatient length of stay, encounter charges, and discharge to SNFs. RESULTS: A total of 11,325 encounters were included. The mean total charge per encounter was $60,221. 634 (5.6%) patients passed away during their encounters. In total, 1,005 (8.9%) patients were managed surgically. Surgical management of type II OFs was associated with a 316% increase in visit charge (95% CI: 291%-341%, p<.001), increased inpatient length of stay (IRR: 2.87, 95% CI: 2.62-3.12, p<.001), and increased likelihood of discharge to SNFs (OR=2.62, 95% CI: 2.26-3.05, p<.001), but decreased in-hospital mortality (OR=0.32, CI: 0.21-0.45, p<.001). The propensity score matched cohort consisted of 2,010 patients, matching each of the 1,005 that underwent surgery to 1,005 that did not. These cohorts were well balanced across age (78.24 vs 77.91 years), Elixhauser Comorbidity Index (3.68 vs 3.71), and Injury Severity Score (30.15 vs 28.93). This matching did not meaningfully alter the associations determined between surgical management and in-hospital mortality (OR=0.34, CI=0.21-0.55, p<.001) or SNF discharge (OR=2.59, CI=2.13-3.16, p<.001). Lastly, the positive control cohort of patients with concurrent SCI had higher rates of SNF discharge (50.0% vs 42.6%, p<.001), surgical management (32.3% vs 9.7%, p<.001), and in-hospital mortality (28.9% vs 5.6%, p<.001). CONCLUSIONS: This study lends insight into the epidemiology of geriatric type II OFs and quantifies risk factors influencing adverse outcomes. Patient informed consent should include a discussion of the protective association between definitive surgical management and in-hospital mortality against potential operative morbidity, increased lengths of hospital stay, and increased likelihood of discharge to SNFs. This information may impact patient treatment selection and decision making.


Assuntos
Processo Odontoide , Traumatismos da Medula Espinal , Fraturas da Coluna Vertebral , Humanos , Idoso , Fraturas da Coluna Vertebral/epidemiologia , Estudos Retrospectivos , Processo Odontoide/cirurgia , Processo Odontoide/lesões , Instituições de Cuidados Especializados de Enfermagem , Alta do Paciente , Mortalidade Hospitalar , Traumatismos da Medula Espinal/complicações , Serviço Hospitalar de Emergência
5.
Front Med (Lausanne) ; 10: 1082848, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37841013

RESUMO

Introduction: The prevalence of trauma is increasing in the geriatric population. The optimal therapy for type II odontoid fractures in the elderly is controversial. This study aims to assess the morbidity and mortality associated with odontoid fractures in octogenarians undergoing C1/C2 posterior screw fixation and describe the perioperative and post-operative complications and risk factors associated with mortality. Materials and methods: Electronic medical records from a single institution pertaining to the period between September 2005 and December 2020 were retrieved. Data on patient demographics, neurological conditions, surgical characteristics, complications, hospital course, and 90-day mortality were collected. Results: Over a 16-year period, 60 patients aged ≥80 years diagnosed with type II odontoid fractures were enrolled in the study. The mean age was 85.0 ± 1.9 years. The mean Charlson Comorbidity Index (CCI) was >6 indicating a poor baseline reserve (8.5 ± 1.9), while cardiovascular diseases were the most prevalent among comorbidities. The mean surgical duration was 217.5 ± 65.9 min, with a mean blood loss of 725.5 ± 275.7 mL. The in-hospital was 5-0% and the 90-day mortality rates increased at 10.0%. No revision surgery was needed in any of the cases. Intraoperative and post-operative X-ray and computed tomography (CT) imaging revealed correct screw placement. Proper alignment of the atlantoaxial spine and fusion could be achieved in all cases. The unique risk factors for mortality included the presence of comorbidities and the occurrence of post-operative complications. Conclusion: The complication and mortality rates associated with odontoid fractures in octogenarians are relatively high. However, the therapeutic goals in this population also include bone union and preservation of neurological status. Despite the often-high comorbidity rate, we still recommend that surgery should be considered in patients over 80 years. However, it is necessary to evaluate several approaches when treating such frail patients.

6.
Eur Spine J ; 32(10): 3434-3449, 2023 10.
Artigo em Inglês | MEDLINE | ID: mdl-37439865

RESUMO

PURPOSE: Odontoid fractures are the most common cervical spine fractures in the elderly, with a controversial optimal treatment. The objective of this review was to compare the outcome of surgical and conservative treatments in elderly (≥ 65 years), by updating a systematic review published by the authors in 2013. METHODS: A comprehensive search was conducted in seven databases. Clinical outcome was the primary outcome. Fracture union- and stability were secondary outcomes. Pooled point estimates and their respective 95% confidence intervals (CIs) were derived using the random-effects model. A random-effects multivariable meta-regression model was used to correct for baseline co-variates when sufficiently reported. RESULTS: Forty-one studies met the inclusion criteria, of which forty were case series and one a cohort study. No clinical differences in outcomes including the Neck Disability Index (NDI, 700 patients), Visual Analogue Scale pain (VAS, 180 patients), and Smiley-Webster Scale (SWS, 231 patients) scores were identified between surgical and conservative treatments. However, fracture union was higher in surgically treated patients (pooled incidence 72.7%, 95% CI 66.1%, 78.5%, 31 studies, 988 patients) than in conservatively treated patients (40.2%, 95% CI 32.0%, 49.0%, 22 studies, 912 patients). This difference remained after correcting for age and fracture type. Fracture stability (41 studies, 1917 patients), although numerically favoring surgery, did not appear to differ between treatment groups. CONCLUSION: While surgically treated patients showed higher union rates than conservatively treated patients, no clinically relevant differences were observed in NDI, VAS pain, and SWS scores and stability rates. These results need to be further confirmed in well-designed comparative studies with proper adjustment for confounding, such as age, fracture characteristics, and osteoporosis degree.


Assuntos
Fraturas Ósseas , Processo Odontoide , Fraturas da Coluna Vertebral , Humanos , Idoso , Estudos de Coortes , Fraturas da Coluna Vertebral/epidemiologia , Fraturas da Coluna Vertebral/cirurgia , Processo Odontoide/cirurgia , Processo Odontoide/lesões , Dor , Resultado do Tratamento
7.
Neurotrauma Rep ; 4(1): 375-383, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37350794

RESUMO

Odontoid fractures are common, often presenting in the elderly after a fall and infrequently associated with traumatic spinal cord injury (tSCI). The goal of this study was to analyze predictors of mortality and neurological outcome when odontoid fractures were associated with signal change on magnetic resonance imaging (MRI) at admission. Over an 18-year period (2001-2019), 33 patients with odontoid fractures and documented tSCI on MRI were identified. Mean age was 65.3 years (standard deviation [SD] = 17.2), and 21 patients were male. The mechanism of injury was falls in 25 patients, motor vehicle accidents in 5, and other causes in 3. Mean Injury Severity Score (ISS) was 40.5 (SD = 30.2), Glasgow Coma Scale (GCS) score was 13 (SD = 3.4), and American Spinal Injury Association (ASIA) motor score (AMS) was 51.6 (SD = 42.7). ASIA Impairment Scale (AIS) grade was A, B, C, and D in 9, 2, 3, and 19 patients, respectively. Mean intramedullary lesion length was 32.3 mm (SD = 18.6). The odontoid peg was displaced ventral or dorsal in 15 patients. Twenty patients had surgical intervention: anterior odontoid screw fixation in 7 and posterior spinal fusion in 13. Eleven (33.3%) patients died in this series: withdrawal of medical care in 5; anoxic brain injury in 4; and failure of critical care management in 2. Univariate logistic regression indicated that GCS score (p < 0.014), AMS (p < 0.002), AIS grade (p < 0.002), and ISS (p < 0.009) were risk factors for mortality. Multi-variate regression analysis indicated that only AMS (p < 0.002) had a significant relationship with mortality when odontoid fracture was associated with tSCI (odds ratio, 0.963; 95% confidence interval, 0.941-0.986).

8.
Global Spine J ; 13(8): 2471-2478, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-35344677

RESUMO

STUDY DESIGN: Retrospective study. OBJECTIVES: Although type II odontoid fractures mainly occur due to high-energy trauma (HET), the number of odontoid type II fractures after low-energy trauma (LET) in the elderly is on the rise. However, there is a paucity of conclusive evidence on the relationship between trauma mechanism and cervical spine alignment in the elderly population. Consequently, we examined cervical alignment and osteoporotic and osteoarthritic patterns in elderly individuals (aged ≥65 years) with type II odontoid fractures. METHODS: We retrospectively assessed cervical spine alignment in 76 elderly individuals who experienced type II odontoid fractures after HET (n = 36) and LET (n = 40) between 2005 and 2020. Osteoporotic and osteoarthritic changes on computed tomography and cervical alignment parameters on sagittal plane radiographs were examined. RESULTS: Moderate and severe osteoporosis of the dens-body junction and osteoarthritis of the atlanto-odontoid joint were more prevalent in the LET than the HET group (P<.005). The anterior atlantodental interval (ADI) was significantly smaller in the LET group than in the HET group (.7 [.7] millimeter vs 1.2 [.8] mm; P=.003). An ADI equal 0 mm indicative for anterior fusion of C1/C2 was present in 37.5% of patients of the LET group. The C0-C2 angle, C1-C2 lordosis, and C2-C7 sagittal vertical axis were significantly different (HET vs LET: 33.2 [7.2]° vs 41.6 [11.4]°, P=.005; 28.1 [7.0]° vs 34.0 [8.0]°, P=.002; and 16.1 [11.1] millimeter vs 27.1 [12.4] mm, P=.008; respectively). CONCLUSION: Significantly higher rates of osteoporotic and degenerative changes were observed after LET. Furthermore, previous cervical malalignment represents a risk factor for type II odontoid fractures after LET.

9.
Surg Neurol Int ; 13: 457, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36324909

RESUMO

Background: In patients over 75 years of age, we applied a modified anterior transarticular C1/2 fixation with reduced pharyngeal mobilization versus the standard anterior triple/quadruple osteosynthesis procedures. Methods: From 2010 to 2018, 29 patients underwent a modified anterior transarticular C1/2 fixation utilizing single odontoid screw fixation through a right-sided Smith-Robinson - (i.e., short and steep screw trajectory for the right and long trajectory for the left side) approach. All the patients were 75 years of age or older (mean age 82.6) and had sustained odontoid Type II fractures. In addition, a subset exhibited further ligamentous injuries and/or atlas fractures. Their Mean Age-adjusted Charlson Comorbidity Index was 5.3 points (range 3-12), while mean American Society of Anesthesiologists scores averaged 2.9 (range 2-4). Results: The mean operating time was 55.8 min, there were no intraoperative complications, and there was minimal blood loss in all cases. The most common medical complications included aspiration pneumonia (24.1%, n = 7), altered mental status (17.2%, n = 5), and cardiac decompensation (6.9%, n = 2). One patient with delayed dysphagia and an infected implant resulting in loosening/dislocation required implant removal and long-term antibiotic therapy. The 30-day mortality rate was 13.8% (four patients) and the 1-year mortality rate was 27.6% (eight patients). Conclusion: Anterior transarticular C1/2/odontoid fixation with reduced pharyngeal mobilization and shorter operative times was associated with high morbidity/mortality rates. Dysphagia/aspiration was the major postoperative complications leading to some deaths especially in patients with dementia/Parkinsonism.

10.
J Craniovertebr Junction Spine ; 13(2): 198-200, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35837421

RESUMO

Treatment of atlantoaxial pathology is often associated with significant morbidity and mortality. While surgical techniques for fixation are well established, approaches that minimize blood loss and muscle dissection are advantageous for expediting recovering and minimizing surgical risk. We present a 34-year-old female who presented with a Type III odontoid fracture requiring surgical fixation. She underwent a C1-2 fusion employing a novel minimally invasive modification of the Goel-Harms atlantoaxial fusion using percutaneous screws and intra-articular cage.

11.
Eur J Trauma Emerg Surg ; 48(4): 2967-2976, 2022 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-35597894

RESUMO

OBJECTIVES: We carried out a retrospective cohort study to differentiate geriatric odontoid fractures into stable and unstable and correlated it with fracture fusion rates. Results are based on the literature and on our own experience. The authors propose that the simple Anderson and D'Alonzo classification may not be sufficient for geriatric patients. METHODS: There were 89 patients ≥ 65 years who presented at our institution with type II and III odontoid fractures from 2003 until 2017 and were included in this study. Each patient was categorized with CT scans to evaluate the type of fracture, fracture gap (mm), fracture angulation (°), fracture displacement (mm) and direction (ventral, dorsal). Fractures were categorized as stable [SF] or unstable [UF] distinguished by the parameters of its angulation (< / > 11°) and displacement (< / > 5 mm) with a follow-up time of 6 months. SFs were treated with a semi-rigid immobilization for 6 weeks, UFs surgically-preferably with a C1-C2 posterior fusion. RESULTS: The classification into SFs and UFs was significant for its angulation (P = 0.0006) and displacement (P < 0.0001). SF group (n = 57): A primary stable union was observed in 35, a stable non-union in 10, and an unstable non-union in 8 patients of which 4 were treated with a C1/2 fixation. The overall consolidation rate was 79%. UF group (n = 32): A posterior C1-C2 fusion was carried out in 23 patients, a C0 onto C4 stabilization in 7 and an anterior odontoid screw fixation in 2. The union rate was 100%. Twenty-one type II SFs (91%) consolidated with a nonoperative management (P < 0.001). A primary non-union occurred more often in type II than in type III fractures (P = 0.0023). There was no significant difference in the 30-day overall case fatality (P = 0.3786). CONCLUSION: To separate dens fractures into SFs and UFs is feasible. For SFs, semi-rigid immobilization provides a high consolidation rate. Stable non-unions are acceptable, and the authors suggest a posterior transarticular C1-C2 fixation as the preferred surgical treatment for UFs. LEVEL OF EVIDENCE: Level III.


Assuntos
Fraturas Ósseas , Processo Odontoide , Fraturas da Coluna Vertebral , Idoso , Parafusos Ósseos , Fixação Interna de Fraturas/métodos , Humanos , Processo Odontoide/diagnóstico por imagem , Estudos Retrospectivos , Fraturas da Coluna Vertebral/diagnóstico por imagem , Fraturas da Coluna Vertebral/cirurgia , Resultado do Tratamento
12.
Orthop Surg ; 14(2): 443-450, 2022 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-34914198

RESUMO

This study sought to investigate and evaluate a modified axial translaminar screw fixation for treating odontoid fractures. We performed a retrospective study at Wenzhou Medical University Affiliated Second Hospital between March 2016 and June 2018. We retrospectively collected and analyzed the medical records of 23 cases with odontoid fractures. All patients were identified as type II odontoid fractures without neurological deficiency and serious diseases following the classification of Anderson. The average age, gender ratio, and body mass index (BMI) were 54.3 ± 11.1 years, 12 men to 11 women, and 22.6 ± 2.4 kg/m2 , respectively. Patients in this study accepted screw fixation using our modified axial translaminar screw fixation combined with atlas pedicle or lateral mass screw fixation. Within the technique, a small cortical "window" was dug in the middle of the axial contralateral lamina, such that the screws in the lamina were visualized to prevent incorrectly implanting the posterior spinal canal through the visualized "window." A total of 46 bone screws were accurately inserted into the axial lamina without using fluoroscopy. The length of all translaminar screws ranged between 26 and 30 mm, while the diameter was 3.5 mm. During the follow-up survey, the visual analog scale (VAS) and neck disability index (NDI) were measured. We provide a simple modification of Wright's elegant technique with the addition of "visualized windows" at the middle of the axial lamina. In all patients, screws were inserted accurately without bony breach and the screw angle was 56.1 ± 3.0°. Mean operative time was 102 ± 28 min with an average blood loss of 50 ± 25 mL. Postoperative hemoglobin and mean length of hospital stay were 12.0 ± 1.4 g/dL and 10.4 ± 3.4 days, respectively. The average follow-up time of all cases was 14.7 months and no internal fixation displacement, loosening, or breakage was found. All patients with odontoid fractures reported being satisfied with the treatment during the recheck period and good clinical outcomes were observed. At 1, 6, and 12 months, NDI and VAS showed that the symptoms of neck pain and limitations of functional disability improved significantly during follow-up. Our results suggest that the modified translaminar screw fixation technique can efficiently treat Anderson type II odontoid fracture, followed by the benefits of less soft tissue dissection, simple operation, no fluoroscopy, and accurate placement of screws.


Assuntos
Processo Odontoide , Fraturas da Coluna Vertebral , Fusão Vertebral , Adulto , Idoso , Parafusos Ósseos , Feminino , Fixação Interna de Fraturas/métodos , Humanos , Masculino , Pessoa de Meia-Idade , Processo Odontoide/diagnóstico por imagem , Processo Odontoide/lesões , Processo Odontoide/cirurgia , Estudos Retrospectivos , Fraturas da Coluna Vertebral/diagnóstico por imagem , Fraturas da Coluna Vertebral/cirurgia , Fusão Vertebral/métodos , Resultado do Tratamento
13.
J Neurosurg Spine ; 36(6): 968-978, 2022 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-34920424

RESUMO

OBJECTIVE: Posterior C1-2 fixation without fusion makes it possible to restore atlantoaxial motion after removing the implant, and it has been used as an alternative technique for odontoid fractures; however, the long-term efficacy of this technique remains uncertain. The purpose of the present study was to explore the long-term follow-up outcomes of patients with odontoid fractures who underwent posterior C1-2 fixation without fusion. METHODS: A retrospective study was performed on 62 patients with type II/III fresh odontoid fractures who underwent posterior C1-2 fixation without fusion and were followed up for more than 5 years. The patients were divided into group A (23 patients with implant removal) and group B (39 patients without implant removal) based on whether they underwent a second surgery to remove the implant. The clinical outcomes were recorded and compared between the two groups. In group A, the range of motion (ROM) of C1-2 was calculated, and correlation analysis was performed to explore the factors that influence the ROM of C1-2. RESULTS: A solid fracture fusion was found in all patients. At the final follow-up, no significant difference was found in visual analog scale score or American Spinal Injury Association Impairment Scale score between the two groups (p > 0.05), but patients in group A had a lower Neck Disability Index score and milder neck stiffness than did patients in group B (p < 0.05). In group A, 87.0% (20/23) of the patients had atlantoodontoid joint osteoarthritis at the final follow-up. In group A, the C1-2 ROM in rotation was 6.1° ± 4.5° at the final follow-up, whereas the C1-2 ROM in flexion-extension was 1.8° ± 1.2°. A negative correlation was found between the C1-2 ROM in rotation and the severity of tissue injury in the atlantoaxial region (r = -0.403, p = 0.024) and the degeneration of the atlantoodontoid joint (r = -0.586, p = 0.001). CONCLUSIONS: Posterior C1-2 fixation without fusion can be used effectively for the management of fresh odontoid fractures. The removal of the implant can further improve the clinical efficacy, but satisfactory atlantoaxial motion cannot be maintained for a long time after implant removal. A surgeon should reconsider the contribution of posterior C1-2 fixation without fusion and secondary implant removal in preserving atlantoaxial mobility for patients with fresh odontoid fractures.

14.
Orthop Clin North Am ; 52(4): 451-479, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-34538354

RESUMO

Craniocervical injuries (CCJs) account for 10% to 30% of all cervical spine trauma. An increasing number of patients are surviving these injuries due to advancements in automobile technology, resuscitation techniques, and diagnostic modalities. The leading injury mechanisms are motor vehicle crashes, falls from height, and sports-related events. Current treatment with urgent rigid posterior fixation of the occiput to the cervical spine has resulted in a substantial reduction in management delays expedites treatment of CCJ injuries. Within CCJ injuries, there is a spectrum of instability, ranging from isolated nondisplaced occipital condyle fractures treated nonoperatively to highly unstable injuries with severely distracted craniocervical dissociation. Despite the evolution of understanding and improvement in the management of cases regarding catastrophic failure to diagnose, subsequent neurologic deterioration still occurs even in experienced trauma centers. The purpose of this article is to review the injuries that occur at the CCJ with the accompanying anatomy, presentation, imaging, classification, management, and outcomes.


Assuntos
Articulação Atlantoaxial/lesões , Articulação Atlantoccipital/lesões , Vértebras Cervicais/lesões , Luxações Articulares , Osso Occipital/lesões , Traumatismos da Coluna Vertebral , Articulação Atlantoaxial/diagnóstico por imagem , Articulação Atlantoaxial/cirurgia , Articulação Atlantoccipital/diagnóstico por imagem , Articulação Atlantoccipital/cirurgia , Vértebra Cervical Áxis/diagnóstico por imagem , Vértebra Cervical Áxis/lesões , Vértebra Cervical Áxis/cirurgia , Atlas Cervical/diagnóstico por imagem , Atlas Cervical/lesões , Atlas Cervical/cirurgia , Vértebras Cervicais/diagnóstico por imagem , Vértebras Cervicais/cirurgia , Humanos , Luxações Articulares/complicações , Luxações Articulares/diagnóstico , Luxações Articulares/cirurgia , Luxações Articulares/terapia , Osso Occipital/diagnóstico por imagem , Osso Occipital/cirurgia , Fraturas da Coluna Vertebral/complicações , Fraturas da Coluna Vertebral/diagnóstico , Fraturas da Coluna Vertebral/cirurgia , Fraturas da Coluna Vertebral/terapia , Traumatismos da Coluna Vertebral/complicações , Traumatismos da Coluna Vertebral/diagnóstico , Traumatismos da Coluna Vertebral/cirurgia , Traumatismos da Coluna Vertebral/terapia , Traumatismos do Sistema Nervoso/etiologia , Traumatismos do Sistema Nervoso/cirurgia , Traumatismos do Sistema Nervoso/terapia
15.
World Neurosurg ; 153: e153-e167, 2021 09.
Artigo em Inglês | MEDLINE | ID: mdl-34166831

RESUMO

OBJECTIVE: Management of pediatric odontoid fractures is tricky and controversial. This study will enrich world literature with intricacies of anterior odontoid screw (OS) fixation in the pediatric population learned over the last decade. METHODS: In this retrospective study, all patients with pediatric odontoid fracture who underwent anterior odontoid screw fixation from January 2010 to December 2019 were included and evaluated for surgical outcome. RESULTS: Thirteen patients were included in this study (mean age, 15 years; range, 6-18 years; male/female, 11:2; type II, 10; type IIA, 1; type III, 2). Common causes of injury were motor vehicle accidents (61.5%) followed by fall from height (38.5%) and all were acute fractures (2-30 days). Five patients had neurologic deficits. Accurate placement of screw was achieved in 92.3% of patients, including all 9 patients who used intraoperative O-arm. K wire migration during bicortical drilling resulted in neurovascular injury, with 1 mortality (7.7%). The remaining 12 patients were available for follow-up (mean, 36 months; range, 20-72 months) and all had preservation of neck movements. Successful OS fixation was achieved in 84.6% of patients, including 1 patient (7.7%) who had a fibrous union. One patient (8.3%) had nonunion because of migration of the screw head in the C2 body. CONCLUSIONS: Anterior odontoid screw fixation in the pediatric population provides good functional outcomes with instant fixation by direct osteosynthesis. However, the surgeon should be meticulous in the surgical approach and should achieve a lag effect. The surgeon should stop after engaging the outer cortex of the odontoid peg with K wire to avoid cranial migration. Intraoperative O-arm guidance is useful.


Assuntos
Parafusos Ósseos , Fixação Interna de Fraturas/métodos , Procedimentos Neurocirúrgicos/métodos , Processo Odontoide/lesões , Fraturas da Coluna Vertebral/cirurgia , Acidentes por Quedas , Acidentes de Trânsito , Adolescente , Fios Ortopédicos , Criança , Feminino , Consolidação da Fratura , Fraturas não Consolidadas , Humanos , Complicações Intraoperatórias/etiologia , Masculino , Processo Odontoide/cirurgia , Falha de Prótese/efeitos adversos , Hemorragia Subaracnóidea/etiologia , Cirurgia Assistida por Computador
16.
Br J Neurosurg ; 35(5): 607-610, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-33998359

RESUMO

BACKGROUND: Type II odontoid fractures are known to have low fusion rates following conservative management with a hard collar. However, most patients are elderly with comorbidities and are not fit for surgery. The present study identified the rates of bony fusion, complications, and clinical outcomes following conservative management of type II odontoid fractures. METHODS: We included consecutive patients referred with a suspected odontoid fracture to a Major Trauma Centre in the UK between March 2015 and December 2017. Data including patient demographics, fracture management, complications and outcomes. Bony fusion was assessed by two neurosurgeons and one neuroradiologists. Results were analysed with simple statistics and chi-squared test. RESULTS: 102 patients were included in the study (mean age = 80.4 ± 15.3). 10 (9.8%) were managed surgically and 92 (90.2%) were managed conservatively with a hard collar, for a mean of 87 days. Patients were followed up for a mean of 28.1 months (range 1-855 days) until discharge. 37% developed collar complications, namely pain, stiffness and non-tolerance. Bony union was achieved in 37.3% of patients treated with a hard collar (versus 80% in the surgical group, p = 0.0096). Increasing age was an independent risk factor for non-union (p < 0.001). Of the patients without bony union, none reported symptoms, and 90% were discharged without a collar. CONCLUSION: The management of type II odontoid fractures are difficult in an elderly, co-morbid population. With conservative management fusion rates are low, and collar complications are not insignificant. However, outcomes are good regardless of union.


Assuntos
Fraturas Ósseas , Processo Odontoide , Fraturas da Coluna Vertebral , Idoso , Idoso de 80 Anos ou mais , Humanos , Processo Odontoide/lesões , Processo Odontoide/cirurgia , Estudos Retrospectivos , Fraturas da Coluna Vertebral/cirurgia , Resultado do Tratamento
17.
J Orthop ; 24: 280-283, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33897130

RESUMO

OBJECTIVE: The purpose of this study was retrospectively to analyze the risk factors for non-union in Anderson-D'Alonzo type III odontoid fractures with conservative treatment. METHODS: 25 patients with type III fractures were analyzed. Coronal and sagittal tilt as well as sagittal and lateral mass gaps were measured by using computed tomography. RESULTS: The non-union group had significantly higher age, greater coronal tilt and lateral mass gap. Especially, the lateral mass gap was >2 mm in all cases with non-union. CONCLUSIONS: Higher age, coronal tilt, and lateral mass gap were significant risk factors for non-union.

18.
J Neurosurg Case Lessons ; 2(20): CASE21501, 2021 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-36061093

RESUMO

BACKGROUND: Displaced odontoid fractures that are irreducible with traction and have cervicomedullary compression by the displaced distal fracture fragment or deformity caused by facetal malalignment require early realignment and stabilization. Realignment with ultimate solid fracture fusion and atlantoaxial joint fusion, in some situations, are the aims of surgery. Fifteen such patients were treated with direct anterior extrapharyngeal open reduction and realignment of displaced fracture fragments with realignment of the atlantoaxial facets, followed by a variable screw placement (VSP) plate in compression mode across the fracture or anterior atlantoaxial fixation (transarticular screws or atlantoaxial plate screw construct) or both. OBSERVATIONS: Anatomical realignment with rigid fixation was achieved in all patients. Fracture fusion without implant failure was observed in 100% of the patients at 6 months, with 1 unrelated mortality. Minimum follow-up has been 6 months in 14 patients and a maximum of 3 years in 4 patients, with 1 unrelated mortality. LESSONS: Most irreducible unstable odontoid fractures can be anatomically realigned by anterior extrapharyngeal approach by facet joint manipulation. Plate (VSP) and screws permit rigid fixation in compression mode with 100% fusion. Any associated atlantoaxial instability can be treated from the same exposure.

19.
Eur Spine J ; 30(2): 498-506, 2021 02.
Artigo em Inglês | MEDLINE | ID: mdl-33098009

RESUMO

OBJECTIVE: The objective of the study was to compare the safety, efficacy, and accuracy of the pedicle screws with the three-dimensional (3D) printed navigation template to the free-hand screws for type II odontoid fractures. PATIENTS AND METHODS: A total of 60 patients with type II odontoid fractures, treated with either template guiding pedicle screws or free-hand screws, were retrospectively assessed. The guiding group was treated with pedicle screws with the assistance of a virtual reality (VR) software-designed, 3D printed navigation template with two guide tubes. The safety rate and treatment efficacy of the screw placement, as well as the trajectory accuracy, were evaluated by respective measures and compared between two surgical groups. RESULTS: There were reduced surgical time (P < 0.05), blood loss (P < 0.01), and C-arm shots (P < 0.01) with 3D printed template guiding screws. The rates of safe pedicle screws in both C1 and C2 were significantly higher in 3D guiding group (P < 0.01) compared to the free-hand group, and the scores of visual analogue scale (VAS) and impairment scale (ASIA) were improved in guiding group at 1 week post-surgery (P < 0.01 and P < 0.05, respectively). Postoperative CT and image reconstruction showed the 3D guiding group had better horizontal screw accuracy on both sides of C1 (L: P < 0.001, R: P < 0.01) and C2 (L: P < 0.001, R: P < 0.01) than free-hand group. CONCLUSION: The herein screw technique using 3D printed navigation template leads to greater improvement in the screw safety, efficacy, and accuracy, which may be a promising alternative to free-hand surgery for the treatment of odontoid fractures.


Assuntos
Fraturas Ósseas , Processo Odontoide , Parafusos Pediculares , Cirurgia Assistida por Computador , Humanos , Imageamento Tridimensional , Processo Odontoide/diagnóstico por imagem , Processo Odontoide/cirurgia , Impressão Tridimensional , Estudos Retrospectivos
20.
Childs Nerv Syst ; 37(4): 1377-1380, 2021 04.
Artigo em Inglês | MEDLINE | ID: mdl-32778938

RESUMO

BACKGROUND: Odontoid synchondral fractures in very young children with displacement/angulation are highly unstable and require surgical intervention. Soft and small bones with poor pull-out strengths make instrumentation and manipulation difficult. CASE REPORT: We report an 18-month-old child with such a fracture where minimal traction made C1-2 dysjunction apparent with neurological worsening. The C1-2 facets were fixed with a short plate and facetal screws. The child had a good outcome. CONCLUSION: Traction should be applied cautiously to avoid distraction injuries. Careful intraoperative manipulation should be planned to avoid any pull outs/fractures while realigning the spine and fixing it.


Assuntos
Fraturas Ósseas , Processo Odontoide , Fraturas da Coluna Vertebral , Criança , Pré-Escolar , Fixação Interna de Fraturas , Humanos , Lactente , Processo Odontoide/diagnóstico por imagem , Processo Odontoide/lesões , Processo Odontoide/cirurgia , Fraturas da Coluna Vertebral/complicações , Fraturas da Coluna Vertebral/diagnóstico por imagem , Fraturas da Coluna Vertebral/cirurgia , Tração
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