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Daneshi A, Rahimizadeh A, Fattahi A, Darvishnia S, Masoudi O, Mohajeri SMR. Our experiences in patients with atlanto-occipital dislocation: A case series with literature review. JOURNAL OF CRANIOVERTEBRAL JUNCTION AND SPINE 2023; 14:103-107. [PMID: 37213571 PMCID: PMC10198206 DOI: 10.4103/jcvjs.jcvjs_152_22] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 01/15/2023] [Indexed: 03/14/2023] Open
Abstract
Atlanto-occipital dislocation (AOD) is an injury to the upper cervical spine that occurs after trauma. This injury is associated with a high mortality rate. According to studies, 8%-31% of deaths caused by accidents are due to AOD. Due to the improvement in medical care and diagnosis, the rate of related mortality has decreased. Five patients with AOD were evaluated. Two cases had type 1, one case had type 2, and two other patients had type 3 AOD. All patients had weakness in the upper and lower limbs and underwent surgery to fix the occipitocervical junction. Other complications in patients were hydrocephalus, 6 nerve palsy, and cerebellar infarction. All patients improved in follow-up examinations. AOD damage is divided into four groups: anterior, vertical, posterior, and lateral. The most common type of AOD is type 1 and the most instability is type 2. There are neurological and vascular injuries due to pressure on regional components; vascular injuries are associated with high mortality rate. In most patients, their symptoms improved after surgery. AOD requires early diagnosis and immobilization of the cervical spine along with maintaining the airway to save the patient's life. It is necessary to consider AOD in cases with neurological deficits or loss of consciousness in the emergency unit because earlier diagnosis could cause a wonderful improvement of the patient's prognosis.
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Affiliation(s)
- Abdoulhadi Daneshi
- Department of Neurosurgery, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Abolfazl Rahimizadeh
- Pars Advanced and Minimally Invasive Medical Manners Research Center, Affiliated to Iran University of Medical Sciences, Tehran, Iran
| | - Arash Fattahi
- Department of Neurosurgery, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Saina Darvishnia
- Departments of Anesthesiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Omid Masoudi
- Department of Neurosurgery, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
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Lambrechts MJ, Schroeder GD, Karamian BA, Canseco JA, Bransford R, Oner C, Benneker LM, Kandziora F, Shanmuganathan R, Kanna R, Joaquim AF, Chapman JR, Vialle E, El-Sharkawi M, Dvorak M, Schnake K, Kepler CK, Vaccaro AR. The AO spine upper cervical injury classification system: Do work setting or trauma center affiliation affect classification accuracy or reliability? Injury 2022; 53:3248-3254. [PMID: 36038389 DOI: 10.1016/j.injury.2022.08.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 08/14/2022] [Indexed: 02/02/2023]
Abstract
PURPOSE To assess the accuracy and reliability of the AO Spine Upper Cervical Injury Classification System based on a surgeons' work setting and trauma center affiliation. METHODS A total of 275 AO Spine members participated in a validation of 25 upper cervical spine injuries, which were evaluated by computed tomography (CT) scans. Each participant was grouped based on their work setting (academic, hospital-employed, or private practice) and their trauma center affiliation (Level I, Level II or III, and Level IV or no trauma center). The classification accuracy was calculated as percent of correct classifications, while interobserver reliability, and intraobserver reproducibility were evaluated based on Fleiss' Kappa coefficient. RESULTS The overall classification accuracy for surgeons affiliated with a level I trauma center was significantly greater than participants affiliated with a level II/III center or a level IV/no trauma center on assessment one (p1<0.0001) and two (p2 = 0.0003). On both assessments, surgeons affiliated with a level I or a level II/III trauma center were significantly more accurate at identifying IIIB injury types (p1 = 0.0007; p2 = 0.0064). Academic surgeons and hospital employed surgeons were significantly more likely to correctly classify type IIIB injuries on assessment one (p1 = 0.0146) and two (p2 = 0.0015). When evaluating classification reliability, the largest differences between work settings and trauma center affiliations was identified in type IIIB injuries. CONCLUSION Type B injuries are the most difficult injury type to correctly classify. They are classified with greater reliability and classification accuracy when evaluated by academic surgeons, hospital-employed surgeons, and surgeons associated with higher-level trauma centers (I or II/III).
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Affiliation(s)
- Mark J Lambrechts
- Rothman Institute at Thomas Jefferson University, Philadelphia, PA, USA..
| | | | - Brian A Karamian
- Rothman Institute at Thomas Jefferson University, Philadelphia, PA, USA
| | - Jose A Canseco
- Rothman Institute at Thomas Jefferson University, Philadelphia, PA, USA
| | - Richard Bransford
- Department of Orthopaedicand Sports Medicine, Harborview Medical Center, University of Washington, Seattle, WA, USA
| | - Cumhur Oner
- Department of Orthopedic Surgery, University Medical Center, University of Utrecht, Utrecht, The Netherlands
| | - Lorin M Benneker
- Spine Unit, Sonnenhof Spital Bern, University of Bern, Bern, Switzerland
| | | | | | - Rishi Kanna
- Department of Orthopedics and Spine Surgery, Ganga Hospital, Coimbatore, India
| | - Andrei F Joaquim
- Department of Neurology, Neurosurgery Division, State University of Campinas, Campinas, Sao Paulo, Brazil
| | - Jens R Chapman
- Swedish Neuroscience Institute, Swedish Medical Center, Seattle, WA, USA
| | - Emiliano Vialle
- Cajuru University Hospital, Catholic University of Paraná, Curitiba, Brazil
| | | | - Marcel Dvorak
- University of British Columbia, Vancouver, BC, Canada
| | - Klaus Schnake
- Center for Spinal and Scoliosis Surgery, Malteser Waldkrankenhaus St. Marien, Erlangen, Germany; Department of Orthopedics and Traumatology, Paracelsus Private Medical University Nuremberg, Nuremberg, Germany
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Grin A, Lvov I, Talypov A, Kordonskiy A, Godkov I, Khushnazarov U, Krylov V. Factors affecting the outcomes of traumatic atlanto-occipital dislocations in adults: a systematic review. World Neurosurg 2022; 162:e568-e579. [DOI: 10.1016/j.wneu.2022.03.055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 03/11/2022] [Accepted: 03/14/2022] [Indexed: 10/18/2022]
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Jung MK, Hörnig L, Stübs MMA, Grützner PA, Kreinest M. Analysis of diagnostics, therapy and outcome of patients with traumatic atlanto-occipital dislocation. Spine J 2021; 21:1513-1519. [PMID: 33757869 DOI: 10.1016/j.spinee.2021.03.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 03/08/2021] [Accepted: 03/16/2021] [Indexed: 02/03/2023]
Abstract
BACKGROUND CONTEXT Patients' outcome following traumatic atlanto-occipital dislocation (AOD) has been poor. In recent years, an increasing number of patients surviving the initial trauma are admitted to hospital. In order to further improve the management of these patients, the knowledge of diagnostics and therapy as well as possible complications should be increased. PURRPOSE The aim of this study was to evaluate diagnostic parameters, therapy, early complications and outcome of patients with traumatic AOD. STUDY DESIGN Monocentric retrospective cohort study. PATIENT SAMPLE A total of 12 patients were included in this study. OUTCOME MEASURES The main outcome measure was functional patient outcome. Furthermore, radiographic and treatment data were analyzed. METHODS All patients suffering from traumatic AOD within an 8-year time period were included. Demographic data, radiological diagnostic parameters (condylar sum, basion dens interval, basion axis interval, power´s ratio, x-line method), as well as treatment data and complications of every patient were analyzed. Radiological parameters were compared with each other. Outcome was analyzed by a follow up examination. RESULTS The accident mechanisms were motor vehicle accidents (MVA), fall from high and low height. Basion dens interval, basion axis interval, power's ratio and x-line method were not reliable in identifying traumatic AOD (only up to 33% of the patients were identified). Twelve patients could be reviewed. Three patients were treated with surgery, five patients were treated nonsurgically. Four patients died before surgical therapy. All seven surviving patients (survival rate: 58.3%) were re-examined (mean follow-up time: 6.7 months). All patients had a GCS of 15. Three surviving patients suffered from persisting neurological deficits. CONCLUSIONS The most reliable way to diagnose AOD in Computer Topography is using the condylar sum. Surgical and nonsurgical measures can be employed with reasonable outcomes. Patient specific injury burden and clinical presentation should be taken into account when making treatment decisions for AOD.
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Affiliation(s)
- Matthias K Jung
- BG Trauma Center Ludwigshafen, University of Heidelberg, Clinic for Trauma and Orthopaedic Surgery, Ludwig-Guttmann-Straße 13, 67071 Ludwigshafen on the Rhine, Germany
| | - Lukas Hörnig
- BG Trauma Center Ludwigshafen, University of Heidelberg, Clinic for Trauma and Orthopaedic Surgery, Ludwig-Guttmann-Straße 13, 67071 Ludwigshafen on the Rhine, Germany
| | - Michael M A Stübs
- Department of Anesthesiology, Stiftung Krankenhaus Bethanien, Bethanienstraße 21, 47441 Moers, Germany
| | - Paul A Grützner
- BG Trauma Center Ludwigshafen, University of Heidelberg, Clinic for Trauma and Orthopaedic Surgery, Ludwig-Guttmann-Straße 13, 67071 Ludwigshafen on the Rhine, Germany
| | - Michael Kreinest
- BG Trauma Center Ludwigshafen, University of Heidelberg, Clinic for Trauma and Orthopaedic Surgery, Ludwig-Guttmann-Straße 13, 67071 Ludwigshafen on the Rhine, Germany.
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Sarmiento JM, Chang D, Nisson PL, Chan JL, Perry TG. Occipitocervical fusion of traumatic atlanto-occipital dissociation in a patient with autofused cervical facet joints: illustrative case. JOURNAL OF NEUROSURGERY: CASE LESSONS 2021; 2:CASE21276. [PMID: 35854957 PMCID: PMC9272367 DOI: 10.3171/case21276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 05/24/2021] [Indexed: 11/10/2022]
Abstract
BACKGROUND Patients who survive traumatic atlanto-occipital dissociation (AOD) may
present with normal neurological examinations and near-normal-appearing
diagnostic images, such as cervical radiographs and computed tomography (CT)
scans. OBSERVATIONS The authors described a neurologically intact 64-year-old female patient with
a degenerative autofusion of her right C4–5 facet joints who
presented to their center after a motor vehicle collision. Prevertebral soft
tissue swelling and craniocervical subarachnoid hemorrhage prompted
awareness and consideration for traumatic AOD. An abnormal occipital
condyle–C1 interval (4.67 mm) on CT and craniocervical junction
ligamentous injury on magnetic resonance imaging (MRI) confirmed the
diagnosis of AOD. Her autofused right C4–5 facet joints were
incorporated into the occipitocervical fusion construct. LESSONS Traumatic AOD can be easily overlooked in patients with a normal neurological
examination and no associated upper cervical spine fractures. A high index
of suspicion is needed when evaluating CT scans because normal values for
craniocervical parameters are significantly different from the accepted
ranges of normal on radiographs in the adult population. MRI of the cervical
spine is helpful to evaluate for atlanto-occipital ligamentous injury and
confirm the diagnosis. Occipitocervical fusion construct may need to be
extended to incorporate spinal levels with degenerative autofusion to
prevent adjacent level degeneration.
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Affiliation(s)
- J. Manuel Sarmiento
- Department of Neurosurgery, Cedars-Sinai Medical Center, Los Angeles, California
| | - Daniel Chang
- Department of Neurosurgery, Cedars-Sinai Medical Center, Los Angeles, California
| | - Peyton L. Nisson
- Department of Neurosurgery, Cedars-Sinai Medical Center, Los Angeles, California
| | - Julie L. Chan
- Department of Neurosurgery, Cedars-Sinai Medical Center, Los Angeles, California
| | - Tiffany G. Perry
- Department of Neurosurgery, Cedars-Sinai Medical Center, Los Angeles, California
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Wu C, Deng JY, Li T, Zeng BF, Hu HG, Zhu YF, Wei Q. 3D-Printed Screw-Rod Auxiliary System for Unstable Atlas Fractures: A Retrospective Analysis. Orthop Surg 2021; 13:1006-1015. [PMID: 33826254 PMCID: PMC8126899 DOI: 10.1111/os.13015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 02/26/2021] [Accepted: 03/16/2021] [Indexed: 11/29/2022] Open
Abstract
Objective To develop and validate the efficacy of a 3D‐printed screw‐rod auxiliary system for unstable atlas fractures. Methods This research is a retrospective analysis, and a total of 14 patients, including 11 males and three females, were enrolled in our hospital from January 2017 to March 2019 who underwent occipitocervical fusion assisted by the 3D‐printed screw‐rod auxiliary system were reviewed, and with an average age of 53.21 ± 14.81 years, an average body mass index (BMI) of 23.61 ± 1.93 kg/m2. The operation time, blood loss and radiation times during the operation were recorded. The maximum fracture displacement values of pre‐ and post‐operation were measured based on CT imaging. All screw grades were evaluated after surgery. The occipital‐cervical 2 (O‐C2) angle and occipitocervical inclination (OCI) angle of pre‐operation, post‐operation and the last following‐up were measured. The dysphagia scale 3 months after surgery and at the last follow‐up, the Neck Disability Index (NDI) 3 months after surgery and at the last follow‐up were assessed. Results All patients were completed the surgery successfully. There was no patient with severe dysphagia or aggravation of nerve injury. The follow‐up was from 12 to 14 months, and with an average of 12.5 months. The average surgery time, average blood loss and average radiation times for the 14 patients were 112.14 min, 171.43 mL and 5.07 times, respectively. There was a significant difference in maximum fracture displacement between pre‐ and post‐operation values (P < 0.05). A total of 56 screws were inserted in 14 patients, among them, three screws were classified as grade 1, and the other screws were classified as grade 0. There was a significant difference in the O‐C2 between pre‐operation and 3 days after operation (P = 0.002); There was a significant difference in OCI angles between pre‐operation and 3 days after operation (P < 0.05); there was no significant difference in the O‐C2 or OCI angle between 3 days after the operation and the last follow‐up (P = 0.079; P = 0.201). The dysphagia scales of two patients were assessed as mild at 3 months after surgery, and the others were assessed as normal at 3 months after surgery. All patients' dysphagia scores returned to normal at the last follow‐up. The average NDI and average neck Visual Analogue Scale (VAS) scores at the last follow‐up were 2.53 and 8.41, respectively. Conclusion It can objectively restore the OCI to normal with few post‐operative complications under the assistance of a screw‐rod auxiliary system to perform occipitocervical fusion for unstable atlas fractures and atlantooccipital joint instability.
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Affiliation(s)
- Chao Wu
- Orthopaedics Center, Zigong Fourth People's Hospital, Zigong, China.,Digital Medical Center, Zigong Fourth People's Hospital, Zigong, China
| | - Jia-Yan Deng
- Digital Medical Center, Zigong Fourth People's Hospital, Zigong, China
| | - Tao Li
- Orthopaedics Center, Zigong Fourth People's Hospital, Zigong, China
| | - Bo-Fang Zeng
- Digital Medical Center, Zigong Fourth People's Hospital, Zigong, China
| | - Hai-Gang Hu
- Orthopaedics Center, Zigong Fourth People's Hospital, Zigong, China
| | - Yuan-Fang Zhu
- Health Management Center, Zigong Fourth People's Hospital, Zigong, China
| | - Qin Wei
- Orthopaedics Center, Zigong Fourth People's Hospital, Zigong, China
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Bakhsh A, Alzahrani A, Aljuzair AH, Ahmed U, Eldawoody H. Fractures of C2 (Axis) Vertebra: Clinical Presentation and Management. Int J Spine Surg 2020; 14:908-915. [PMID: 33560250 PMCID: PMC7872410 DOI: 10.14444/7139] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Injuries of the upper cervical spine are a major cause of morbidity and mortality due to associated spinal cord and head injuries. The injury patterns of the upper cervical spine are numerous, and the neurologic sequelae are diverse. The axis (C2) is the most commonly fractured vertebra in the upper cervical spine; its unique anatomy and architecture pose difficulties in the diagnosis and the management of its fractures. METHODS All cases of acute spinal injuries at Prince Mohammed Bin Abdulaziz Hospital in Riyadh, Saudi Arabia, were screened for fractures of C2 vertebrae. These patients underwent computerized tomography (CT) imaging of the cervical spine with special attention paid to the cranio-cervical junction. Magnetic resonance imaging (MRI) and angiography of the neck were performed to exclude ligamentous tears and vascular injuries. Unstable fractures were fixed surgically. In the remaining cases, a conservative trial was given. All patients were followed up once every 3 months for a period of 1 year. During follow-up, some patients underwent additional CT imaging of the cervical spine to monitor the healing of fractures. RESULTS Out of 230 spinal trauma patients, 43.5% suffered from cervical spine injury. C2 fractures were recorded in 26% cases, and fractures of the C2 vertebral body, including pedicles, laminae, lateral masses, and articular processes, were found in many cases, followed by odontoid fractures (50%). No case of atlanto-axial or atlanto-occipital dislocation was recorded. Road traffic accidents were found to be responsible for 92% of cases. The majority of patients were young males, and 96% of patients had no neurological deficit. Only 15% of the patients required surgery for their unstable fractures. Half of the patients attended outpatient follow -up appointments, all of whom underwent CT scanning of the cervical spine 9 months after the accident or operation. CONCLUSIONS The axis (C2) is the most commonly affected vertebra in cervical spine trauma, and odontoid fractures make up 50% of all C2 fractures. C2 fractures rarely cause any neurological deficit or vascular injury, and the majority of affected patients can be managed conservatively; only a small proportion requires surgical intervention. Surgical intervention leads to early and complete healing.
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Affiliation(s)
- Ahmed Bakhsh
- Prince Mohammed Bin Abdulaziz Hospital, Riyadh, Kingdom of Saudi Arabia
| | | | | | | | - Hany Eldawoody
- Department of Neurosurgery, Mansoura Faculty of Medicine, Mansoura University, Egypt, and Prince Mohammed Bin Abdulaziz Hospital, Riyadh, Kingdom of Saudi Arabia
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Huang J, Wang X, Nie Q, Zhang C, Wu H, Jian F. A Novel Construct Incorporating C2 Unilateral Pedicle and Contralateral Translaminar Screws for Occipitocervical Internal Fixation: An In Vitro Biomechanical Study. World Neurosurg 2020; 149:e1166-e1173. [PMID: 33715837 DOI: 10.1016/j.wneu.2020.10.087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 10/16/2020] [Accepted: 10/17/2020] [Indexed: 11/18/2022]
Abstract
BACKGROUND Occipitocervical fixation using bilateral C2 pedicle screws (C0-C2BiPS) and occipitocervical fixation using bilateral C2 translaminar screws (C0-C2BiLS) provide satisfactory stability. Bilateral fixation is not feasible for cases of C2 unilateral pedicle morphology abnormality and ipsilateral laminectomy. This study proposed and evaluated novel occipitocervical fixation using C2 unilateral pedicle screw and contralateral translaminar screws (C0-C2PSLS). METHODS In 6 human cadaveric specimens, an in vitro experiment was performed with 2.0-Nm moment control in flexion-extension, lateral bending, and axial rotation to investigate biomechanical stability. Neutral zone and range of motion (ROM) between the occiput (C0) and C2 were measured in the intact state, after destabilization, and after sequential stabilization using C0-C2BiPS, C0-C2BiLS, and C0-C2PSLS constructs. RESULTS Flexion-extension ROM of the intact specimens at C0-C2 was 27.4° ± 2.4°. Instrumentation with C0-C2PSLS, C0-C2BiPS, and C0-C2BiLS reduced flexion-extension ROM to 3.7° ± 1.3°, 4.7° ± 1.4°, and 4.5° ± 1.4°, respectively. In lateral bending, ROM values were 7.0° ± 0.6°, 4.5° ± 1.4°, 4.2° ± 1.4°, 2.7° ± 1.0°, respectively. In axial rotation, ROM values were 65.3° ± 5.7°, 2.5° ± 0.5°, 1.4° ± 0.5°, and 0.9° ± 0.6°, respectively. Comparing destabilized and intact specimens, all 3 constructs significantly reduced ROM and neutral zone values in flexion-extension, lateral bending, and axial rotation (P < 0.05). Direct comparisons between the 3 constructs revealed no significant difference (P > 0.05). CONCLUSIONS Novel C0-C2PSLS provides similar stabilization effect as C0-C2BiPS and C0-C2BiLS constructs and has potential for clinical use, especially for cases of C2 unilateral pedicle morphology abnormality and ipsilateral laminectomy.
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Affiliation(s)
- Juying Huang
- School of Biomedical Engineering, Capital Medical University, Beijing, China; Beijing Key Laboratory of Fundamental Research on Biomechanics in Clinical Application, Capital Medical University, Beijing, China
| | - Xingwen Wang
- Department of Neurosurgery, XuanWu Hospital, Capital Medical University, Beijing, China
| | - Qingbin Nie
- Department of Neurosurgery, XuanWu Hospital, Capital Medical University, Beijing, China
| | - Can Zhang
- Department of Neurosurgery, XuanWu Hospital, Capital Medical University, Beijing, China
| | - Hao Wu
- Department of Neurosurgery, XuanWu Hospital, Capital Medical University, Beijing, China
| | - Fengzeng Jian
- Department of Neurosurgery, XuanWu Hospital, Capital Medical University, Beijing, China.
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Kimchi G, Greenberg G, Traynelis VC, Witiw CD, Knoller N, Harel R. Integrity of the tectorial membrane is a favorable prognostic factor in atlanto-occipital dislocation. Br J Neurosurg 2020; 34:470-474. [PMID: 32368931 DOI: 10.1080/02688697.2020.1761292] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Objective: Atlanto-occipital dislocation is usually considered to be a fatal injury or one that leaves the victim with serious neurological deficits. The aim of this study is to illustrate a novel positive prognostic factor for atlanto-occipital dislocation, based on cervical MRI studies of patients who suffered this injury.Methods: Over the course of the past year, the authors have treated three consecutive patients with atlanto-occipital dislocation who attained an excellent clinical outcome. We retrospectively evaluated clinical, surgical and radiographic parameters in search of a common denominator to explain the excellent outcome of these patients.Results: All patients presented with severe polytrauma that required urgent surgical intervention including two laparotomies and a thoracotomy. The patients were subsequently treated with an occipitocervical fusion. No patient developed neurological deficits on long-term follow-up. The cervical MRI studies of all patients were notable for a having a preserved tectorial membrane, while other primary stabilizers of the craniocervical junction such as the apical, alar and cruciate ligaments were shown to be severely disrupted. We consider this anatomical distinction to account for their benign clinical course.Conclusion: A preserved tectorial membrane appears to be an important favorable prognostic factor in atlanto-occipital dislocation and may serve to mitigate neurological outcome in such injuries. To determine the integrity of the ligament and consequently affect clinical management, expeditious MRI of the cranio-cervical junction should be considered routinely in such injuries in addition to cervical CT scans.
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Affiliation(s)
- Gil Kimchi
- Department of Neurosurgery, Sheba Medical Center, Ramat-Gan, Israel (affiliated to Sackler School of Medicine, Tel Aviv University)
| | - Gahl Greenberg
- Department of Radiology, Neuroradiology Division, Sheba Medical Center, Ramat-Gan, Israel
| | - Vincent C Traynelis
- Department of Neurosurgery, Rush University Medical Center, Chicago, IL, USA
| | | | - Nachshon Knoller
- Department of Neurosurgery, Sheba Medical Center, Ramat-Gan, Israel (affiliated to Sackler School of Medicine, Tel Aviv University)
| | - Ran Harel
- Department of Neurosurgery, Sheba Medical Center, Ramat-Gan, Israel (affiliated to Sackler School of Medicine, Tel Aviv University)
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Rief M, Zoidl P, Zajic P, Heschl S, Orlob S, Silbernagel G, Metnitz P, Puchwein P, Prause G. Atlanto-occipital dislocation in a patient presenting with out-of-hospital cardiac arrest: a case report and literature review. J Med Case Rep 2019; 13:44. [PMID: 30803441 PMCID: PMC6390378 DOI: 10.1186/s13256-018-1926-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 11/13/2018] [Indexed: 12/18/2022] Open
Abstract
Background Atlanto-occipital dislocation is a rare and severe injury of the upper spine associated with a very poor prognosis. Case presentation We report the case of a 59-year-old European man who suffered from out-of-hospital cardiac arrest following a motor vehicle accident. Cardiopulmonary resuscitation was initiated immediately by bystanders and continued by emergency medical services. After 30 minutes of cardiopulmonary resuscitation with a total of five shocks following initial ventricular fibrillation, return of spontaneous circulation was achieved. An electrocardiogram recorded after return of spontaneous circulation at the scene showed signs of myocardial ischemia as a possible cause for the cardiac arrest. No visible signs of injury were found. He was transferred to the regional academic trauma center. Following an extended diagnostic and therapeutic workup in the emergency room, including extended focused assessment with sonography for trauma ultrasound, whole-body computed tomography, and magnetic resonance imaging (of his head and neck), a diagnosis of major trauma (atlanto-occipital dislocation, bilateral serial rip fractures and pneumothoraces, several severe intracranial bleedings, and other injuries) was made. An unfavorable outcome was initially expected due to suspected tetraplegia and his inability to breathe following atlanto-occipital dislocation. Contrary to initial prognostication, after 22 days of intensive care treatment and four surgical interventions (halo fixation, tracheostomy, intracranial pressure probe, chest drains) he was awake and oriented, spontaneously breathing, and moving his arms and legs. Six weeks after the event he was able to walk without aid. After 2 months of clinical treatment he was able to manage all the activities of daily life on his own. It remains unclear, whether cardiac arrest due to a cardiac cause resulted in complete atony of the paravertebral muscles and caused this extremely severe lesion (atlanto-occipital dislocation) or whether cardiac arrest was caused by apnea due the paraplegia following the spinal injury of the trauma. Conclusions A plausible cause for the trauma was myocardial infarction which led to the car accident and the major trauma in relation to the obviously minor trauma mechanism. With this case report we aim to familiarize clinicians with the mechanism of injury that will assist in the diagnosis of atlanto-occipital dislocation. Furthermore, we seek to emphasize that patients presenting with electrocardiographic signs of myocardial ischemia after high-energy trauma should primarily be transported to a trauma facility in a percutaneous coronary intervention-capable center rather than the catheterization laboratory directly.
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Affiliation(s)
- Martin Rief
- Division of General Anaesthesiology, Emergency and Intensive Care Medicine, Medical University of Graz, Auenbruggerplatz 5, 8036, Graz, Austria. .,Department of Anaesthesiology and Intensive Care Medicine, Medical University of Graz, Auenbruggerplatz 5, 8036, Graz, Austria.
| | - Philipp Zoidl
- Division of General Anaesthesiology, Emergency and Intensive Care Medicine, Medical University of Graz, Auenbruggerplatz 5, 8036, Graz, Austria.,Department of Anaesthesiology and Intensive Care Medicine, Medical University of Graz, Auenbruggerplatz 5, 8036, Graz, Austria
| | - Paul Zajic
- Division of General Anaesthesiology, Emergency and Intensive Care Medicine, Medical University of Graz, Auenbruggerplatz 5, 8036, Graz, Austria.,Department of Anaesthesiology and Intensive Care Medicine, Medical University of Graz, Auenbruggerplatz 5, 8036, Graz, Austria
| | - Stefan Heschl
- Department of Anaesthesiology and Intensive Care Medicine, Medical University of Graz, Auenbruggerplatz 5, 8036, Graz, Austria.,Division of Cardiac, Thoracic and Vascular Anaesthesiology and Intensive Care Medicine, Medical University of Graz, Auenbruggerplatz 5, 8036, Graz, Austria
| | - Simon Orlob
- Division of General Anaesthesiology, Emergency and Intensive Care Medicine, Medical University of Graz, Auenbruggerplatz 5, 8036, Graz, Austria.,Department of Anaesthesiology and Intensive Care Medicine, Medical University of Graz, Auenbruggerplatz 5, 8036, Graz, Austria
| | - Günther Silbernagel
- Division of Angiology, Department of Internal Medicine, Medical University of Graz, Auenbruggerplatz 15, 8036, Graz, Austria
| | - Philipp Metnitz
- Division of General Anaesthesiology, Emergency and Intensive Care Medicine, Medical University of Graz, Auenbruggerplatz 5, 8036, Graz, Austria.,Department of Anaesthesiology and Intensive Care Medicine, Medical University of Graz, Auenbruggerplatz 5, 8036, Graz, Austria
| | - Paul Puchwein
- Department of Orthopedics and Trauma Surgery, Medical University of Graz, Auenbruggerplatz 5, 8036, Graz, Austria
| | - Gerhard Prause
- Division of General Anaesthesiology, Emergency and Intensive Care Medicine, Medical University of Graz, Auenbruggerplatz 5, 8036, Graz, Austria.,Department of Anaesthesiology and Intensive Care Medicine, Medical University of Graz, Auenbruggerplatz 5, 8036, Graz, Austria
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12
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Occipitocervical Dislocation in Low-Energy Trauma. Case Rep Orthop 2018; 2018:3931525. [PMID: 30631620 PMCID: PMC6304856 DOI: 10.1155/2018/3931525] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 11/19/2018] [Indexed: 11/18/2022] Open
Abstract
Traumatic occipitocervical dislocation (OCD) is described in the literature as a potentially fatal injury secondary to high-energy trauma. We describe a case of OCD occurring in a patient who sustained a ground-level fall whose only clinical symptom was posterior neck pain without neurologic compromise. Computed tomography (CT) and magnetic resonance imaging (MRI) were used to diagnose severe injury to the structurally important ligamentous complex that stabilizes the base of the skull to the spine, along with unstable fractures of the occipital condyle and C1. Emergent surgical instrumentation and fusion of occiput-C2 was performed. Postoperatively, neurologic integrity was maintained. This case illustrates that traumatic OCD is not exclusively secondary to high-energy mechanisms. It also demonstrates that severe neck pain as the only clinical manifestation in a patient with head or neck low-energy trauma is suggestive of a possible OCD. We highlight the importance of the use of head and neck CT as the first imaging-based diagnostic tool to aid in identifying this injury. Finally, surgical stabilization should be performed as soon as possible to minimize neurologic sequelae.
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13
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Liao S, Schneider NRE, Hüttlin P, Grützner PA, Weilbacher F, Matschke S, Popp E, Kreinest M. Motion and dural sac compression in the upper cervical spine during the application of a cervical collar in case of unstable craniocervical junction-A study in two new cadaveric trauma models. PLoS One 2018; 13:e0195215. [PMID: 29624623 PMCID: PMC5889057 DOI: 10.1371/journal.pone.0195215] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Accepted: 03/13/2018] [Indexed: 12/11/2022] Open
Abstract
Background Unstable conditions of the craniocervical junction such as atlanto-occipital dislocation (AOD) or atlanto-axial instability (AAI) are severe injuries with a high risk of tetraplegia or death. Immobilization by a cervical collar to protect the patient from secondary damage is a standard procedure in trauma patients. If the application of a cervical collar to a patient with an unstable craniocervical condition may cause segmental motion and secondary injury to the spinal cord is unknown. The aim of the current study is (i) to analyze compression on the dural sac and (ii) to determine relative motion of the cervical spine during the procedure of applying a cervical collar in case of ligamentous unstable craniocervical junction. Methods and findings Ligamentous AOD as well as AOD combined with ligamentous AAI was simulated in two newly developed cadaveric trauma models. Compression of the dural sac and segmental angulation in the upper cervical spine were measured on video fluoroscopy after myelography during the application of a cervical collar. Furthermore, overall three-dimensional motion of the cervical spine was measured by a motion tracking system. In six cadavers each, the two new trauma models on AOD and AOD combined with AAI could be implemented. Mean dural sac compression was significantly increased to -1.1 mm (-1.3 to -0.7 mm) in case of AOD and -1.2 mm (-1.6 to -0.6 mm) in the combined model of AOD and AAI. Furthermore, there is a significant increased angulation at the C0/C1 level in the AOD model. Immense three-dimensional movement up to 22.9° of cervical spine flexion was documented during the procedure. Conclusion The current study pointed out that applying a cervical collar in general will cause immense three-dimensional movement. In case of unstable craniocervical junction, this leads to a dural sac compression and thus to possible damage to the spinal cord.
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Affiliation(s)
- Shiyao Liao
- BG Trauma Center Ludwigshafen, Department of Trauma Surgery and Orthopaedics, Ludwigshafen, Germany
| | - Niko R. E. Schneider
- University Hospital Heidelberg, Department of Anesthesiology, Heidelberg, Germany
| | - Petra Hüttlin
- BG Trauma Center Ludwigshafen, Department of Trauma Surgery and Orthopaedics, Ludwigshafen, Germany
| | - Paul A. Grützner
- BG Trauma Center Ludwigshafen, Department of Trauma Surgery and Orthopaedics, Ludwigshafen, Germany
| | - Frank Weilbacher
- University Hospital Heidelberg, Department of Anesthesiology, Heidelberg, Germany
| | - Stefan Matschke
- BG Trauma Center Ludwigshafen, Department of Trauma Surgery and Orthopaedics, Ludwigshafen, Germany
| | - Erik Popp
- University Hospital Heidelberg, Department of Anesthesiology, Heidelberg, Germany
| | - Michael Kreinest
- BG Trauma Center Ludwigshafen, Department of Trauma Surgery and Orthopaedics, Ludwigshafen, Germany
- * E-mail:
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14
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Anania P, Fiaschi P, Sbaffi PF, Zona G. A Case of Asymptomatic Occipital Condyle Fracture with Incomplete Occipitocervical Dislocation: How Did It Happen? World Neurosurg 2017; 109:403-408. [PMID: 29081394 DOI: 10.1016/j.wneu.2017.10.082] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 10/13/2017] [Accepted: 10/14/2017] [Indexed: 12/15/2022]
Abstract
BACKGROUND Atlanto-occipital dislocation (AOD) is a lesion rarely observed in a trauma center, because of high mortality in the preclinical phase. The number of AOD survivors is increasing thanks to the improvement in prehospital resuscitation. CASE DESCRIPTION Our goal is to describe a case of incomplete atlanto-occipital dislocation presented without any neurologic, cardiorespiratory, or metabolic problems, which remained constant even after surgical treatment. Our purpose is also to discuss treatment approaches to minimize subsequent neurologic deficits. CONCLUSIONS We recommend a rapid immobilization with spine table and cervical collar, the consensual stabilization of hemodynamic and respiratory parameters, and a successive prompt occipitocervical stabilization. C2 should be included in the stabilization because of the ligamentous conformation of craniocervical joint.
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Affiliation(s)
- Pasquale Anania
- Department of Neurosurgery, San Martino-IST University Hospital, University of Genoa, Genoa, Italy
| | - Pietro Fiaschi
- Department of Neurosurgery, San Martino-IST University Hospital, University of Genoa, Genoa, Italy.
| | - Pier Filippo Sbaffi
- Department of Neurosurgery, San Martino-IST University Hospital, University of Genoa, Genoa, Italy
| | - Gianluigi Zona
- Department of Neurosurgery, San Martino-IST University Hospital, University of Genoa, Genoa, Italy
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15
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Robles LA, Mundis GM, Cuevas-Solórzano A. Atlanto-Occipital Rotatory Dislocation: A Case Report and Systematic Review. World Neurosurg 2017; 110:106-114. [PMID: 29133003 DOI: 10.1016/j.wneu.2017.11.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 10/31/2017] [Accepted: 11/02/2017] [Indexed: 10/18/2022]
Abstract
BACKGROUND Atlanto-occipital rotatory dislocation (AORD) has rarely been reported in the literature; for this reason, the clinicoradiologic characteristics of this injury are not well described. METHODS We describe the case of a 67-year-old man who sustained a cervical spine trauma. He reported only neck pain and was neurologically intact. A computed tomography scan showed a rotatory displacement of the atlanto-occipital joints associated with a widened condylar-C1 interval; in addition, magnetic resonance imaging showed injuries to the stabilizing ligaments of this area. A systematic literature review was also performed to identify previous cases of patients with AORD. RESULTS The patient was treated with craniocervical fixation from occipital to C1, achieving a good outcome. The literature review yielded 9 cases of patients with AORD. Compared with patients with atlanto-occipital dislocation, patients with rotatory dislocations have a less severe degree of displacement of the atlanto-occipital joints and better clinical outcome. CONCLUSIONS Compared with previously classified atlanto-occipital dislocations, AORD is an independent and unique variation. AORD presents with different biomechanical, clinicoradiologic, and prognostic characteristics and represents an important addition to the spectrum of atlanto-occipital dislocation injuries.
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Affiliation(s)
- Luis A Robles
- Section of Neurosurgery, Hospiten, Puerto Vallarta, Jalisco, Mexico.
| | - Greg M Mundis
- San Diego Center for Spinal Disorders, La Jolla, California, USA
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16
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Liao S, Popp E, Hüttlin P, Weilbacher F, Münzberg M, Schneider N, Kreinest M. Cadaveric study of movement in the unstable upper cervical spine during emergency management: tracheal intubation and cervical spine immobilisation-a study protocol for a prospective randomised crossover trial. BMJ Open 2017; 7:e015307. [PMID: 28864483 PMCID: PMC5588953 DOI: 10.1136/bmjopen-2016-015307] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
INTRODUCTION Emergency management of upper cervical spine injuries often requires cervical spine immobilisation and some critical patients also require airway management. The movement of cervical spine created by tracheal intubation and cervical spine immobilisation can potentially exacerbate cervical spinal cord injury. However, the evidence that previous studies have provided remains unclear, due to lack of a direct measurement technique for dural sac's space during dynamic processes. Our study will use myelography method and a wireless human motion tracker to characterise and compare the change of dural sac's space during tracheal intubations and cervical spine immobilisation in the presence of unstable upper cervical spine injury such as atlanto-occipital dislocation or type II odontoid fracture. METHODS AND ANALYSIS Perform laryngoscopy and intubation, video laryngoscope intubation, laryngeal tube insertion, fiberoptic intubation and cervical collar application on cadaveric models of unstable upper cervical spine injury such as atlanto-occipital dislocation or type II odontoid fracture. The change of dural sac's space and the motion of unstable cervical segment are recorded by video fluoroscopy with previously performing myelography, which enables us to directly measure dural sac's space. Simultaneously, the whole cervical spine motion is recorded at a wireless human motion tracker. The maximum dural sac compression and the maximum angulation and distraction of the injured segment are measured by reviewing fluoroscopic and myelography images. ETHICS AND DISSEMINATION This study protocol has been approved by the Ethics Committee of the State Medical Association Rhineland-Palatinate, Mainz, Germany. The results will be published in relevant emergency journals and presented at relevant conferences. TRIAL REGISTRATION NUMBER DRKS00010499.
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Affiliation(s)
- Shiyao Liao
- Department of Trauma Surgery and Orthopedics, BG Trauma Center Ludwigshafen, Ludwigshafen, Germany
| | - Erik Popp
- Department of Anesthesiology, University Hospital Heidelberg, Heidelberg, Germany
| | - Petra Hüttlin
- Department of Trauma Surgery and Orthopedics, BG Trauma Center Ludwigshafen, Ludwigshafen, Germany
| | - Frank Weilbacher
- Department of Anesthesiology, University Hospital Heidelberg, Heidelberg, Germany
| | - Matthias Münzberg
- Department of Trauma Surgery and Orthopedics, BG Trauma Center Ludwigshafen, Ludwigshafen, Germany
| | - Niko Schneider
- Department of Anesthesiology, University Hospital Heidelberg, Heidelberg, Germany
| | - Michael Kreinest
- Department of Trauma Surgery and Orthopedics, BG Trauma Center Ludwigshafen, Ludwigshafen, Germany
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17
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Proposal for subclassification of type I dens axis fractures according to Anderson and D’Alonzo. Rechtsmedizin (Berl) 2016. [DOI: 10.1007/s00194-016-0138-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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18
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The craniocervical junction: embryology, anatomy, biomechanics and imaging in blunt trauma. Insights Imaging 2016; 8:29-47. [PMID: 27815845 PMCID: PMC5265194 DOI: 10.1007/s13244-016-0530-5] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 10/09/2016] [Accepted: 10/13/2016] [Indexed: 12/15/2022] Open
Abstract
Imaging of the blunt traumatic injuries to the craniocervical junction can be challenging but central to improving morbidity and mortality related to such injury. The radiologist has a significant part to play in the appropriate management of patients who have suffered injury to this vital junction between the cranium and the spine. Knowledge of the embryology and normal anatomy as well as normal variant appearances avoids inappropriate investigations in these trauma patients. Osseous injury can be subtle while representing important radiological red flags for significant underlying ligamentous injury. An understanding of bony and ligamentous injury patterns can also give some idea of the biomechanics and degree of force required to inflict such trauma. This will assist greatly in predicting risk for other critical injuries related to vital neighbouring structures such as vasculature, brain stem, cranial nerves and spinal cord. The embryology and anatomy of the craniocervical junction will be outlined in this review and the relevant osseous and ligamentous injuries which can arise as a result of blunt trauma to this site described together. Appropriate secondary radiological imaging considerations related to potential complications of such trauma will also be discussed. TEACHING POINTS • The craniocervical junction is a distinct osseo-ligamentous entity with specific functional demands. • Understanding the embryology of the craniocervical junction may prevent erroneous radiological interpretation. • In blunt trauma, the anatomical biomechanical demands of the ligaments warrant consideration. • Dedicated MRI sequences can provide accurate evaluation of ligamentous integrity and injury. • Injury of the craniocervical junction carries risk of blunt traumatic cerebrovascular injury.
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19
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Riascos R, Bonfante E, Cotes C, Guirguis M, Hakimelahi R, West C. Imaging of Atlanto-Occipital and Atlantoaxial Traumatic Injuries: What the Radiologist Needs to Know. Radiographics 2016; 35:2121-34. [PMID: 26562241 DOI: 10.1148/rg.2015150035] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Approximately one-third of all cervical spine injuries involve the craniocervical junction (CCJ). Composed of the occiput and the first two cervical vertebrae, this important anatomic landmark, in conjunction with an intricate ligamentous complex, is essential to maintaining the stability of the cervical spine. The atlantoaxial joint is the most mobile portion of the spine, predominantly relying on the ligamentous framework for stability at that level. As acute onsite management of trauma patients continues to improve, CCJ injuries, which often lead to death onsite where the injury occurred, are increasingly being encountered in the emergency department. Understanding the anatomy of the CCJ is crucial in properly evaluating the cervical spine, allowing the radiologist to assess its stability in the trauma setting. The imaging findings of important CCJ injuries, such as atlanto-occipital dissociation, occipital condyle fractures, atlas fractures with transverse ligament rupture, atlantoaxial distraction, and traumatic rotatory subluxation, are important to recognize in the acute setting, often dictating patient management. Thin-section multidetector computed tomography with sagittal and coronal reformats is the study of choice in evaluating the extent of injury, allowing the radiologist to thoroughly evaluate the stability of the cervical spine. Furthermore, magnetic resonance (MR) imaging is increasingly being used to evaluate the spinal soft tissues and ligaments, and to identify associated spinal cord injury, if present. MR imaging is also indicated in patients whose neurologic status cannot be evaluated within 48 hours of injury. .
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Affiliation(s)
- Roy Riascos
- From the Department of Diagnostic and Interventional Imaging, University of Texas Health Science Center at Houston, 6431 Fannin St, MSB 2.130B, Houston, TX 77030 (R.R., E.B., M.G., C.W.); and Department of Radiology, University of Texas Medical Branch, Galveston, Tex (C.C., R.H.)
| | - Eliana Bonfante
- From the Department of Diagnostic and Interventional Imaging, University of Texas Health Science Center at Houston, 6431 Fannin St, MSB 2.130B, Houston, TX 77030 (R.R., E.B., M.G., C.W.); and Department of Radiology, University of Texas Medical Branch, Galveston, Tex (C.C., R.H.)
| | - Claudia Cotes
- From the Department of Diagnostic and Interventional Imaging, University of Texas Health Science Center at Houston, 6431 Fannin St, MSB 2.130B, Houston, TX 77030 (R.R., E.B., M.G., C.W.); and Department of Radiology, University of Texas Medical Branch, Galveston, Tex (C.C., R.H.)
| | - Mary Guirguis
- From the Department of Diagnostic and Interventional Imaging, University of Texas Health Science Center at Houston, 6431 Fannin St, MSB 2.130B, Houston, TX 77030 (R.R., E.B., M.G., C.W.); and Department of Radiology, University of Texas Medical Branch, Galveston, Tex (C.C., R.H.)
| | - Reza Hakimelahi
- From the Department of Diagnostic and Interventional Imaging, University of Texas Health Science Center at Houston, 6431 Fannin St, MSB 2.130B, Houston, TX 77030 (R.R., E.B., M.G., C.W.); and Department of Radiology, University of Texas Medical Branch, Galveston, Tex (C.C., R.H.)
| | - Clark West
- From the Department of Diagnostic and Interventional Imaging, University of Texas Health Science Center at Houston, 6431 Fannin St, MSB 2.130B, Houston, TX 77030 (R.R., E.B., M.G., C.W.); and Department of Radiology, University of Texas Medical Branch, Galveston, Tex (C.C., R.H.)
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20
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Fard SA, Avila MJ, Johnstone CM, Patel AS, Walter CM, Skoch J, Sattarov KV, Baaj AA. Prognostic factors in traumatic atlanto-occipital dislocation. J Clin Neurosci 2016; 33:63-68. [PMID: 27554925 DOI: 10.1016/j.jocn.2016.05.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Accepted: 05/05/2016] [Indexed: 12/19/2022]
Abstract
Traumatic atlanto-occipital dislocation (AOD) is an ominous injury with high mortality and morbidity in trauma patients. Improved survival has been observed with advancements in pre-hospital and hospital care. Furthermore, high quality imaging studies are accessible at most trauma centers; these are crucial for prompt diagnosis of AOD. The objective of this study is to perform a comprehensive literature review of traumatic AOD, with specific emphasis on identifying prognostic factors for survival. A review of the literature was performed using the Medline database for all traumatic atlanto-occipital articles published between March 1959 and June 2015; 141 patients from 60 total studies met eligibility criteria for study inclusion. A binary logistic regression model was utilized to identify prognostic factors. The analysis assessed age, sex, spinal cord injury (SCI), traumatic brain injury (TBI), polytrauma injury (PI), and Traynelis AOD Classification. Only TBI was statistically significantly associated with death (OR 8.05 p<0.05); SCI did not reach statistical significance for predicting mortality in AOD patients (OR 1.25 p>0.05). Age, sex, PI, and Traynelis AOD Classification did not meet significance to predict mortality in AOD patients. We found that patients with TBI are eight times more likely to die than patients without TBI. A high degree of suspicion for AOD during pre-hospital care, as well as, prompt diagnosis and management in the trauma center play a key role in the treatment of this devastating injury. The relationship between survival and factors such as TBI and SCI should be further explored.
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Affiliation(s)
- Salman Abbasi Fard
- Division of Neurosurgery, University of Arizona, 1501 N Campbell Ave, Tucson, AZ 85724, USA
| | - Mauricio J Avila
- Weill Cornell Brain and Spine Center, 525 East 68 Street, Box 99, New York, NY 10065, USA.
| | - Cameron M Johnstone
- Division of Neurosurgery, University of Arizona, 1501 N Campbell Ave, Tucson, AZ 85724, USA
| | - Apar S Patel
- Division of Neurosurgery, University of Arizona, 1501 N Campbell Ave, Tucson, AZ 85724, USA
| | - Christina M Walter
- Division of Neurosurgery, University of Arizona, 1501 N Campbell Ave, Tucson, AZ 85724, USA
| | - Jesse Skoch
- Division of Neurosurgery, University of Arizona, 1501 N Campbell Ave, Tucson, AZ 85724, USA
| | - Kamran V Sattarov
- Division of Neurosurgery, University of Arizona, 1501 N Campbell Ave, Tucson, AZ 85724, USA
| | - Ali A Baaj
- Weill Cornell Brain and Spine Center, 525 East 68 Street, Box 99, New York, NY 10065, USA
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21
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Theodore N, Aarabi B, Dhall SS, Gelb DE, Hurlbert RJ, Rozzelle CJ, Ryken TC, Walters BC, Hadley MN. The diagnosis and management of traumatic atlanto-occipital dislocation injuries. Neurosurgery 2013; 72 Suppl 2:114-26. [PMID: 23417184 DOI: 10.1227/neu.0b013e31827765e0] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Affiliation(s)
- Nicholas Theodore
- Division of Neurological Surgery, Barrow Neurological Institute, Phoenix, Arizona, USA
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22
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Zhang S, Wadhwa R, Haydel J, Toms J, Johnson K, Guthikonda B. Spine and spinal cord trauma: diagnosis and management. Neurol Clin 2013. [PMID: 23186900 DOI: 10.1016/j.ncl.2012.09.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Spine trauma is a devastating clinical condition that affects many people annually on a worldwide basis. Management of spinal trauma has become much more surgically oriented with advances in stabilization techniques over the past two decades. The degree of injury to the spinal cord dictates the prognosis of the patient in cervical and thoracolumbar trauma. Traumatic spinal cord injury is a major area of socioeconomic burden and, as such, is a burgeoning area of ongoing research interest.
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Affiliation(s)
- Shihao Zhang
- Department of Neurosurgery, LSU HSC, Shreveport, LA 71103, USA
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23
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Munoz-Mahamud E, Combalia A, Bori G. Traumatic atlanto-occipital dislocation: a case report. J Orthop Surg (Hong Kong) 2012; 20:391-4. [PMID: 23255654 DOI: 10.1177/230949901202000327] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
We report a 30-year-old man with atlanto-occipital dislocation after a traffic accident. Diagnosis was based on radiography, computed tomography, and magnetic resonance imaging. Owing to the critical conditions that did not fulfil advanced trauma and life support protocols, surgical treatment was deferred, and the patient died 10 hours later.
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Affiliation(s)
- Ernesto Munoz-Mahamud
- Department of Orthopaedic Surgery and Traumatology, Hospital Clinic of Barcelona, University of Barcelona, Spain
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24
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Kim YJ, Yoo CJ, Park CW, Lee SG, Son S, Kim WK. Traumatic Atlanto-occipital Dislocation (AOD). KOREAN JOURNAL OF SPINE 2012; 9:85-91. [PMID: 25983794 PMCID: PMC4432366 DOI: 10.14245/kjs.2012.9.2.85] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2012] [Revised: 06/21/2012] [Accepted: 06/22/2012] [Indexed: 12/29/2022]
Abstract
OBJECTIVE Traumatic atlanto-occipital dislocation (AOD) results from high energy trauma and is an uncommon and usually fatal injury due to an injury to the cervicomedullary junction. Recently, improved prehospital management, early diagnosis and effective treatment led to increasing reports of survival. This study of patients with AOD initial imaging modalities recognizes the clinical features and diagnostic considerations for a quick diagnosis. METHODS In this article, five survived adult patients with traumatic AOD are presented and retrospectively reviewed. Diagnosis was made by lateral cervical spine x-ray, cervical computed tomography (CT), or magnetic resonance imaging(MRI). Treatment consisted of early immobilization, respiratory support, and subsequent occipitocervical fusion. RESULTS Four patients were male and the other one was female. Three were diagnosed early and the others were delayed in confirmations. One was type I AOD and four were type II AOD. All patients were applied occipitocervical fusion. Two cases were worse; neurological states and the other three that showed no change. Lateral X-ray film of all patients in the prevertebral soft tissue swelling at the C2 level was noted. The mean thickness of prevertebral soft tissue C2 level was 17.88 mm(15.18 to 20.17mm). Two were in the normal range of dens-basion index(DBI), three showed abnormalities, and Power's ratio was abnormal in 3 patients. CONCLUSION As for damages caused by a strong external force in patients with severe prevertebral soft tissue swelling at C2 level abnormaly, the doctor determines whether more should be carefully AOD and considers 3D CT or MRI to confirm AOD in these patients.
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Affiliation(s)
- Yeon-Joon Kim
- Department of Neurosurgery, Gachon University Gil Hospital, Incheon, Korea
| | - Chan-Jong Yoo
- Department of Neurosurgery, Gachon University Gil Hospital, Incheon, Korea
| | - Chan-Woo Park
- Department of Neurosurgery, Gachon University Gil Hospital, Incheon, Korea
| | - Sang-Gu Lee
- Department of Neurosurgery, Gachon University Gil Hospital, Incheon, Korea
| | - Seong Son
- Department of Neurosurgery, Gachon University Gil Hospital, Incheon, Korea
| | - Woo-Kyung Kim
- Department of Neurosurgery, Gachon University Gil Hospital, Incheon, Korea
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25
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Ehlinger M, Charles YP, Adam P, Bierry G, Dosch JC, Steib JP, Bonnomet F. Survivor of a traumatic atlanto-occipital dislocation. Orthop Traumatol Surg Res 2011; 97:335-40. [PMID: 21273154 DOI: 10.1016/j.otsr.2010.10.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2010] [Revised: 08/05/2010] [Accepted: 10/04/2010] [Indexed: 02/07/2023]
Abstract
Atlanto-occipital dislocation is a devastating ligamentous injury that most often turns fatal. However, because of on-site resuscitation improvements, the emergency teams are increasingly dealing with this condition. We report a rare case of atlanto-occipital dislocation (AOD) in a surviving patient with more than one-year follow-up. The mechanism of injury appears to be an extreme hyperextension applied to the head. This injury occurs more frequently in children since they are anatomically predisposed (flat articulation between the occiput and the atlas, increased ligamentous laxity). The diagnosis should be suggested by severe neurological injury after high trauma but also post-traumatic cardiorespiratory deficit. There have been reports of atlanto-occipital dilocations without neurologic impairment. A radiographic examination must be performed and lateral cervical radiographs should be acquired. However, additional imaging with CT or MRI may be required to aid diagnosis of AOD in cases in which radiographic findings are equivocal. Once the diagnosis of AOD has been confirmed, an anatomical classification should be made according to the magnitude of displacement. Fatal lesions are of neurological and vascular origin and some authors advocate the systematic use of angiography. Consensus regarding the management of AOD in adults has been achieved. Occipito-cervical arthrodesis is the recommended treatment option. We advocate a two-stage surgery: the patient is initially fitted with a halo vest then occipitocervical fusion is performed. Surgical treatment should be combined with cardiorespiratory management. The emergency teams should get familiar with this injury since they will be increasingly confronted to it. Early recognition and standard appropriate management is essential to avoid delayed treatment and complications.
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Affiliation(s)
- M Ehlinger
- Department of Orthopaedic and Trauma Surgery, Hautepierre Hospital, Strasbourg University Hospitals, 1, avenue Molière, 67098 Strasbourg cedex, France.
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Atlanto-occipital dislocation: Case report and discussion. Radiol Case Rep 2011; 6:573. [PMID: 27307941 PMCID: PMC4899932 DOI: 10.2484/rcr.v6i4.573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Traumatic atlanto-occipital dislocation is an uncommon injury that frequently results in either a fatal outcome or severe neurologic deficit. This diagnosis must be considered for any patients who may have had cervical spine damage after high trauma, even in the absence of neurologic signs, as there have been reports of cases without neurologic impairment. In addition to radiographic examination, including lateral cervical radiographs, supplemental imaging with CT or MRI may be required to confirm diagnosis in equivocal cases, and to help in evaluation of bone and nervous structures. Moreover, these modalities allow measurement of the magnitude of dislocation and aid in classification of type of dislocation, which helps guide management. A systematic approach to evaluating the cranio-cervical relationship is critical to identifying atlanto-occipital dislocation. This case report presents and discusses imaging findings that will assist in the diagnosis of atlanto-occipital dislocation.
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Thomann KD, Schomerus C, Sebestény T, Rauschmann M. ["Isolated injury" of the alar ligaments: MRI diagnosis and surgical therapy]. DER ORTHOPADE 2010; 39:285-98. [PMID: 20177876 DOI: 10.1007/s00132-009-1546-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
UNLABELLED Spinal distortions caused by traffic collisions play a large role in medical expert opinions. Prolonged or chronic conditions present particular difficulties. The radiologist E. Volle developed and published a system for the classification of isolated injuries of the alar ligaments. As a result, surgery on the craniocervical junction was carried out in a large number of patients and the results published on multiple occasions. This article describes the anatomy of the alar ligaments, complicated injuries, the concept of the isolated lesion of the alar ligaments and their surgical management. German and international publications are evaluated. RESULT It was impossible to substantiate isolated injuries to alar ligaments. According to current knowledge, the published results are based on a misinterpretation of MRI findings. These results are to be considered as artefacts. There is no anatomical correlation for the classification of isolated injuries to alar ligaments. Surgical stabilisation due to an allegedly isolated injury to the alar ligaments is therefore not indicated. This statement does not apply to injuries sustained in high-speed trauma in combination with complex injuries of the atlanto-occipital and atlanto-dental-joint (joint capsules, atlanto-occipital membrane) with clear signs of instability.
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Affiliation(s)
- K-D Thomann
- Institut für Versicherungsmedizin, Eschersheimer Landstr. 353, 60320, Frankfurt/Main, Deutschland.
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Intraarticular atlantooccipital fusion for the treatment of traumatic occipitocervical dislocation in a child: a new technique for selective stabilization with nine years follow-up. Spine (Phila Pa 1976) 2010; 35:E421-6. [PMID: 20393390 DOI: 10.1097/brs.0b013e3181c91fa1] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN A case report of traumatic atlantooccipital dislocation (AOD) managed by intraarticular-posterior fusion from a posterior approach at the C0-C1 level with preservation of C1-C2 motion. OBJECTIVE To present a new technique for atlantooccipital fusion with long-term follow-up. SUMMARY OF BACKGROUND DATA There is an increasing number of patients with AOD who have preservation of neurologic function. The most frequent method used to treat this condition is occipitocervical fusion. There has been a tendency in recent years to minimize the extent of stabilization, performing occipitoatlantal fusion only. However, it is difficult to achieve a solid fusion between C0 and C1, and the long-term effect of the insufficiency of lig. alaria on C0-C2 stability is unknown. The authors present a modified technique of C0-C1 fusion that aims to enhance fusion and achieve greater stability. METHODS A 11-year-old child with AOD was initially treated unsuccessfully with a halo device for 3 months. As instability persisted, an isolated C0-C1 fusion was performed from a posterior approach. This anatomically based intraarticular fusion technique comprises removal of the articular cartilage of the atlantooccipital joints, and cancellous bone autografting at the atlantooccipital joints and between the occiput and posterior arch of C1, supported by an occipital plate linked by rods to lateral mass screws in the atlas. RESULTS This technique of increased bony fusion surface and internal fixation provided an excellent result with full recovery of minor neurologic deficits. At long-term follow-up, 9 years after surgery, the patient was free of signs and symptoms; solid fusion of the C0-C1 joint, and normal values for rotation of the C1-C2 segment were recorded. CONCLUSION Intraarticular and posterior fusion of the atlantooccipital joint was able to provide an excellent long-term clinical outcome in the treatment of traumatic AOD in a child. This is the first report of an intraarticular fusion of the C0-C1 segment and the longest follow-up published on isolated C0-C1 stabilization.
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Radcliff KE, Ben-Galim P, Dreiangel N, Martin SB, Reitman CA, Lin JN, Hipp JA. Comprehensive computed tomography assessment of the upper cervical anatomy: what is normal? Spine J 2010; 10:219-29. [PMID: 20207332 DOI: 10.1016/j.spinee.2009.12.021] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2009] [Revised: 11/27/2009] [Accepted: 12/25/2009] [Indexed: 02/08/2023]
Abstract
BACKGROUND CONTEXT High-speed computed tomography (CT) exams have replaced traditional radiographs for assessment of cervical spine injuries in many emergency departments. Recent evidence demonstrates that even subtle displacements can indicate significant upper cervical spine injuries. Many different anatomical measurements have been described in the upper cervical spine to date, most of them based on X-ray. The range of anatomical relationships that exist in an uninjured population must be known to reliably detect abnormal relations. The measurements with the lowest normal variation are likely to be most useful in detecting injuries. PURPOSE The purpose of this study was to describe the normal quantitative anatomical relationships as well as the threshold measurements most likely to detect injury in the upper cervical spine. STUDY DESIGN/SETTING Retrospective anatomical case review. PATIENT SAMPLE Seventy-six thin-sliced cervical CT scans randomly selected from a trauma population, all negative for injury in the cervical spine. METHODS Forty-two different anatomical measurements were made of the upper cervical spine. These included traditional historical measurements and other detailed dimensions to characterize occipitocervical (OC) and atlantoaxial (AA) joint relationships. RESULTS After review of all the anatomical measurements performed in the upper cervical spine, direct measurements of the joint space had the least variation. The mean OC joint space was 0.6mm, with an upper 95% confidence interval (CI) of 1mm at the most anterior or posterior aspects of the joints. This was true for both sagittal and coronal measurements. The mean AA joint space was 0.6mm, with an upper 95% CI of 1.2mm at the lateral aspect of the joint on the coronal image only. The midsagittal structures demonstrated significantly higher standard deviation and variability. CONCLUSIONS These results revealed consistently narrow joint spaces and left-right symmetry in the upper cervical spine joints that do not vary according to demographics. There was distinctly greater consistency in the coronal plane, which enabled more precise diagnostic measurement and side-to-side comparison of measurements. This precision will enable more accurate identification of abnormal scans, which should prompt consideration for additional workup. Thus, better understanding of these relationships may enable earlier detection of subtle craniocervical dissociative injuries based on CT scan data. This is important, because the only evidence of a severe injury on CT can be subtle misalignment.
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Affiliation(s)
- Kristen E Radcliff
- Department of Orthopedic Surgery, Baylor College of Medicine, 6620 Main St., 11th Floor, Houston, TX 77030, USA
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Diagnostic Determinants of Craniocervical Distraction Injury in Adults. AJR Am J Roentgenol 2009; 192:52-8. [DOI: 10.2214/ajr.07.3993] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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[Traumatology of the spine]. Chirurg 2008; 79:918, 920-6. [PMID: 18719864 DOI: 10.1007/s00104-008-1517-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Spinal trauma poses considerable threats to survival and quality of life. Especially cervical spine injuries are often associated with neurologic deficits. A thorough diagnostic pathway, often including computed tomography with sagittal reconstruction, is mandatory to evaluate the extent and consequences of spinal trauma. Every treatment must aim to restore stability and prevent secondary neurologic deterioration. Compression fractures usually can be treated successfully with conservative treatment, while burst fractures usually, and flexion/distraction injuries, and fracture-dislocation generally require internal stabilization. Injuries of the upper cervical spine can be treated conservatively or operatively, depending on the degree of instability. In the lower cervical spine, most injuries require internal fixation.
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Abstract
Traumatic atlanto-occipital dislocation carries a significant mortality and morbidity. We present the clinical and radiological features of a case of traumatic skeletal and central nervous system disunion. Thanks to a combination of early resuscitation and luck, the patient survived an improbably severe injury to leave hospital and enjoy a degree of independent life. Such severe injuries are usually fatal and the literature on such extensive cervical disruption is often confined to postmortem evidence.
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Affiliation(s)
- Benjamin M Bloom
- Intensive Care Unit, Fremantle Hospital, Alma Street, Fremantle, West Australia, Australia.
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33
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Horn EM, Feiz-Erfan I, Lekovic GP, Dickman CA, Sonntag VKH, Theodore N. Survivors of occipitoatlantal dislocation injuries: imaging and clinical correlates. J Neurosurg Spine 2007; 6:113-20. [PMID: 17330577 DOI: 10.3171/spi.2007.6.2.113] [Citation(s) in RCA: 100] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
OBJECT Although rare, traumatic occipitoatlantal dislocation (OAD) injuries are associated with a high mortality rate. The authors evaluated the imaging and clinical factors that determined treatment and were predictive of outcomes, respectively, in survivors of this injury. METHODS The medical records and imaging studies obtained in 33 patients with OAD were reviewed retrospectively. Clinical factors that predicted outcomes, especially neurological injury at presentation and imaging findings, were evaluated. The most sensitive method for the diagnosis of OAD was the measurement of basion axial-basion dens interval on computed tomography (CT) scanning. Five patients with severe traumatic brain injuries (TBIs) were not treated and subsequently died. Of the 28 patients in whom treatment was performed, 23 underwent fusion and five were fitted with an external orthosis. Abnormal findings of the occipitoatlantal ligaments on magnetic resonance (MR) imaging, associated with no or questionable abnormalities on CT scanning, provided the rationale for nonoperative treatment. Of the 28 patients treated for their injuries, perioperative death occurred in five, three of whom had presented with severe neurological injuries. The mortality rate was highest in patients with a TBI at presentation. The mortality rate was lower in patients presenting with a spinal cord injury, but in this group there was a higher rate of persistent neurological deficits. CONCLUSIONS The spines in patients with CT-documented OAD are most likely unstable and need surgical fixation. In patients for whom CT findings are normal and MR imaging findings suggest marginal abnormalities, nonoperative treatment should be considered. The best predictors of outcome were severe brain or upper cervical injuries at initial presentation.
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Affiliation(s)
- Eric M Horn
- Division of Neurological Surgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, Arizona 85013, USA
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Krakenes J, Kaale BR. Magnetic resonance imaging assessment of craniovertebral ligaments and membranes after whiplash trauma. Spine (Phila Pa 1976) 2006; 31:2820-6. [PMID: 17108836 DOI: 10.1097/01.brs.0000245871.15696.1f] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN Review article. OBJECTIVES To review the literature on soft tissue lesions of the upper cervical spine in whiplash trauma with focus on imaging. SUMMARY OF BACKGROUND DATA Whiplash injury is associated with chronic impairment in a substantial number of patients. There are different opinions as to the nature and prognosis of this condition, and the role of diagnostic imaging is debated. METHODS Review the literature on the anatomic source of the chronic whiplash syndrome. Review the literature on imaging of the upper cervical spine, emphasizing on the author's own research. RESULTS MRI shows structural changes in ligaments and membranes after whiplash injury, and such lesions can be assessed with reasonable reliability. Lesions to specific structures can be linked with specific trauma mechanisms. There is a correlation between clinical impairment and morphologic findings. CONCLUSION Whiplash trauma can damage soft tissue structures of the upper cervical spine, particularly the alar ligaments. Structural lesions in this area contribute to the understanding of the chronic whiplash syndrome.
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Affiliation(s)
- Jostein Krakenes
- Department of Radiology, Haukeland University Hospital, and Department of Surgical Sciences, University of Bergen Medical School, Bergen, Norway.
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Payer M, Sottas CC. Traumatic atlanto-occipital dislocation: presentation of a new posterior occipitoatlantoaxial fixation technique in an adult survivor: technical case report. Neurosurgery 2006; 56:E203; discussion E203. [PMID: 15799814 DOI: 10.1227/01.neu.0000144171.37158.f0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2004] [Accepted: 08/20/2004] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE AND IMPORTANCE More survivors of traumatic atlanto-occipital dislocation (AOD) in adults have recently been reported. Surgical management options are therefore of increasing interest. We present a new technique of posterior C0-C1-C2 fixation. CLINICAL PRESENTATION A 29-year-old motorcyclist survived a traumatic vertical AOD of 15 mm. No spinal cord or medullary lesion was present. Brain contusion and diffuse axonal injuries led to a cortical biplegia, which recovered progressively over a period of 6 months. Twelve months after surgery, no neurological deficit was present except for slightly increased deep tendon reflexes. INTERVENTION Posterior C0-C1-C2 fixation was performed with two bicortical occipital screws, one bicortical lateral mass screw in the atlas, and one monocortical pars screw in the axis on each side, connected to a plate-rod on the right and left sides. Fusion was performed with monocortical bone graft from the posterior iliac crest. CONCLUSION The surgical technique described was thought to be safe to perform and resulted in immediate stability without external immobilization. Solid fusion was achieved 6 months after surgery.
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Affiliation(s)
- Michael Payer
- Department of Neurosurgery, University Hospital of Geneva, Geneva, Switzerland.
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Gautschi OP, Woodland PR, Zellweger R. Complete medulla/cervical spinal cord transection after atlanto-occipital dislocation: An extraordinary case. Spinal Cord 2006; 45:387-93. [PMID: 17003771 DOI: 10.1038/sj.sc.3101975] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
STUDY DESIGN Case report. SUMMARY OF BACKGROUND DATA Traumatic atlanto-occipital dislocation (AOD) with a complete medulla/spinal cord transection is rare and believed to be fatal owing to the high level of the spinal cord injury. Clinical outcome is poor. Consequently, relatively few case reports of adult patients surviving this injury appear in the literature. OBJECTIVES AND RESULT: We present the case of a 20-year-old male, who sustained an AOD with a complete medulla/spinal cord transection in a motorcycle accident to discuss the possibility of long-term survival with this condition. The patient underwent occipito-cervical stabilization. With an Injury Severity Score of 75, by definition unsurvivable, the patient is 16 months after the injury, ventilated and fully dependent for all care. CONCLUSION Long-term survival following AOD with a complete medulla/spinal cord transection is possible if immediate resuscitation at the scene is available. Nevertheless, it remains questionable whether or not a patient with such a devastating injury and without any prospect of functional recovery should be kept alive under all circumstances.
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Affiliation(s)
- O P Gautschi
- Department of Orthopaedic and Trauma Surgery, Royal Perth Hospital, Perth, Western Australia
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van de Pol GJ, Hanlo PW, Oner FC, Castelein RM. Redislocation in a halo vest of an atlanto-occipital dislocation in a child: recommendations for treatment. Spine (Phila Pa 1976) 2005; 30:E424-8. [PMID: 16025021 DOI: 10.1097/01.brs.0000170595.83169.94] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN A case of a child with a traumatic atlanto-occipital dislocation (AOD), with unexpected secondary redislocation in a halo vest is presented. An extensive literature review was performed. OBJECTIVES To show the difficulties in diagnosing AOD, to emphasize its intrinsic instability, and to make recommendations for treatment of this condition. SUMMARY OF BACKGROUND DATA AOD is a rare condition that is difficult to diagnose. Because of the high neurologic morbidity, this injury often results in death. Different diagnostic approaches have been evaluated throughout the literature. Also, there are different opinions on how to treat AOD. There is no large trial that compares conservative treatment with surgery. METHODS A 4-year-old child with a longitudinal distraction of the head is described. Because of his tenuous medical condition, initial treatment was in a halo vest. However, redislocation occurred inside the vest, so surgical stabilization was performed as soon as the patient's condition allowed. RESULTS To diagnose AOD, different measuring techniques can be applied on a lateral cervical spine radiograph. Using a combination of these tools, the sensitivity of the examination can be increased. There are 3 types of dislocation. Type II, which is a longitudinal distraction, is most unstable. Once confirmed, AOD should be immobilized. This can temporarily be performed with a halo-frame, but our case shows that this does not necessarily provide a stable situation, and early surgical reconstruction should be considered. CONCLUSIONS AOD can be an extremely unstable lesion and is difficult to diagnose. Although initial treatment in a halo vest is recommended, redislocation can occur even in the vest. We recommend urgent surgical stabilization.
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Affiliation(s)
- Gerrit J van de Pol
- Department of Orthopaedic Surgery, Radboud University Nijmegen Medical Centre, The Netherlands
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