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Management of a patient with a lamina fracture of the sixth cervical vertebra and concomitant subluxation.

OBJECTIVE: To discuss the chiropractic management of a patient who sustained a unilateral lamina fracture of the sixth cervical vertebra. CLINICAL FEATURES: The patient had suffered cervical trauma from a motor vehicle accident. Clinical evaluation revealed acute global neck pain with associated left arm radiculitis and approximately 75% loss of useful left-arm motor function. The patient also complained of headache and low back pain. Computerized tomography and radiographic findings indicated a left lamina fracture of the sixth cervical vertebra. INTERVENTION AND OUTCOME: A rigid cervical collar was prescribed for the patient and specific-contact, short lever-arm, high-velocity, low-amplitude adjustments were applied at the levels of C2, C7 and L5, on different treatment visits, 11 days after trauma. The patient continued to wear the orthosis after each adjustment. The patient recovered from his injury and had no late biomechanical or neurological instability as a result of this management approach. CONCLUSION: The chiropractic management of a patient who sustained a unilateral lamina fracture of C6 with concomitant subluxations at C2 and C7 is discussed. This case study is the second reported in the scientific literature in which conservative chiropractic methods were applied to a patient with a lamina fracture.

Accidents, Traffic↗

[Experimental research of viscoelasticity of C2-T1 cervical vertebra].

This is a research on the characteristics of stress relaxation and creep of cervical vertebra (c2-t1) of fresh body (18 cases). The effect of stress relaxation and creep of cervical vertebra was detected by simulating front and back routes operation. Reduced curve and data in the constant strain and stress were obtained. By using regression analysis method the reduced relaxation and creep functions were acquired. The experimental result showed the decrease of viscoelasticity in simulating operation conditions.

Adult↗

Traumatic enucleation of the body of the sixth cervical vertebra without neurologic sequelae: a case report.

STUDY DESIGN: Case report of an adult man with traumatic enucleation of the body of the sixth cervical vertebra with initial minimal neurologic damage and without vascular injury, which was successfully treated with surgery. OBJECTIVES: To describe the traumatic mechanism, diagnostic procedures, operative findings, and adopted management. SUMMARY AND BACKGROUND DATA: Literature review suggests that the observed case is exceptional. Similar vertebral injuries are usually associated with severe neurologic and vascular damages. METHODS: A 38-year-old farmer with enucleation of the body of the sixth cervical vertebra was admitted to the Orthopedic Clinic of Padua University. The patient initially was treated with halo traction. Two days later, he underwent anterior open reduction and internal fixation with plate. He was discharged 2 months later with a halo vest. RESULTS: Two years after surgery, the pedicles' fracture had healed solidly with normal intervertebral alignment and a slight loss of the height of the C6-C7 intervertebral space (fibrous union). He is asymptomatic and has totally resumed his habitual work. CONCLUSION: Traumatic enucleation of the body of a lower cervical vertebra is a rare injury. The case presented here demonstrates that such a lesion can be less severe than a complete dislocation or a burst fracture. The good outcome of surgery suggests that the treatment adopted was effective, although an interbody fusion would have been more adherent to conventional surgical principles.

Accidents, Occupational↗

Forelimb lameness associated with radiographic abnormalities of the cervical vertebrae.

Eight horses had forelimb lameness which was considered unrelated to primary forelimb pain, but was associated with radiographic abnormalities of one or more cervical vertebrae. There was no evidence of ataxia or weakness. The degree and character of the forelimb lameness varied between horses. In 4 horses, selective local analgesic techniques were used to rule out lameness associated with pain in the forelimb. In the other 4 horses, radiographic examination of the cervical region was performed on the basis of forelimb lameness seen in conjunction with neck stiffness and/or neck pain. Three horses had marked modelling of the synovial articular facet joints in the caudal cervical region; a 4th horse had modelling and a fracture involving the synovial articulation between the 4th and 5th cervical vertebrae. One horse had abnormalities of the intercentral articulation between the 7th cervical and 1st thoracic vertebrae and a discrete mineralised opacity dorsal to it. Two horses had large lucent zones in a vertebral body. One horse had a fracture of the body of the 7th cervical vertebra. Five horses were humanely destroyed, 2 returned to their previous level of activity after a prolonged period of rest and 1 was still being rested at the time of writing.

Animals↗

Pressures exerted against the cervical vertebrae by the standard and intubating laryngeal mask airways: a randomized, controlled, cross-over study in fresh cadavers.

UNLABELLED: In this randomized, controlled, cross-over study, we measured the pressures exerted by the standard laryngeal mask airway (LMA) and the intubating laryngeal mask airway (ILM) against the cervical vertebrae during insertion, intubation, and maneuvers commonly used to facilitate intubation. We also assessed the effect of these pressures on cervical spine (C-spine) movement. Twenty cadavers (6-24 h postmortem) without cervical abnormality were initially studied. Three microchip pressure sensors were implanted into the pharyngeal surface of C2-3. The size 5 ILM and LMA were inserted in random order into each cadaver with the head-neck in the neutral position. Maximal cervical pressures (CPmax) were recorded for both devices during cuff inflation from 0-40 mL and with the intracuff pressure (ICP) at 60 cm H2O, insertion, fiberscope-guided intubation, partial withdrawal/reinsertion (ILM only), elevation/depression of the handle with 20 N of force applied (ILM only). In five additional matched cadavers, the effect of pressure on posterior displacement of C3 was assessed, and CPmax was measured during laryngoscope- and fiberscope-guided oro/nasotracheal intubation (controls). CPmax was higher for the ILM than the LMA over the inflation range (96 vs 15 cm H2O; P < 0.0001) and with the ICP at 60 cm H2O (95 vs 10 cm H2O; P < 0.0001). During cuff inflation, CPmax was generally unchanged for the ILM but was always increased for the LMA. CPmax for the LMA and ILM was similar during insertion (224 vs 273 cm H2O) but higher for the ILM during fiberscope-guided intubation (96 vs 43 cm H2O; P < 0.0001). At 60 cm H2O ICP, CPmax increased during LMA (224 cm H2O; P < 0.0001) and ILM insertion (273 cm H2O; P < 0.0001) and increased for the LMA (43 cm H2O; P < 0.0001) but was unchanged for the ILM (96 cm H2O) during fiberscope-guided intubation. For the ILM, CP-max increased during handle depression (394 cm H2O; P < 0.0001) and partial withdrawal/reinsertion (265 cm H2O; P < 0.0001) but decreased during handle elevation (6 cm H2O; P < 0.00001). CPmax for the controls was usually zero and was always less than the LMA/ ILM (P < 0.0001). The mean (range) for posterior displacement of C3 was 0.8 (0-2) mm at 100 cm H2O and 2.8 (1-5) mm at 400 cm H2O. Laryngeal mask devices exert greater pressures against the cervical vertebrae than established intubation techniques and can produce posterior displacement of the C-spine. IMPLICATIONS: Laryngeal mask devices exert greater pressures against the cervical vertebrae than established intubation techniques and can produce posterior displacement of the cervical spine. We recommend that laryngeal mask devices only be used in the unstable cervical spine if difficulties are anticipated or encountered with established techniques, pending the results of studies demonstrating its relative safety.

Aged↗

Dysphagia secondary to osteoid osteoma of the transverse process of the second cervical vertebra.

Dysphagia due to bony lesions of the cervical spine is rare. Almost all reported cases have been secondary to cervical osteophyte formation. We present an unusual case of a 58-year-old male who presented with dysphagia of insidious onset. Investigations revealed osteoid osteoma arising from the transverse process of the second cervical vertebra extending anteriorly in a curvilinear manner. The surgical management of this case is discussed in this report. To our knowledge, this is the first reported case of dysphagia secondary to osteoid osteoma of cervical spine.

Cervical Vertebrae↗

Simultaneous fracture of every cervical vertebra: a case study.

STUDY DESIGN: The case of a 14-year-old boy who sustained simultaneous fractures of every cervical vertebra in a high-energy snowmobile accident is reported. OBJECTIVE: To describe a case of multiple cervical spine fractures and their management. SUMMARY OF BACKGROUND DATA: Injuries from all-terrain vehicles and off-road vehicles, including snowmobiles, are increasing in severity and frequency. The reported case illustrates a result of high-impact loading in which the driver struck his head after being thrown from a snowmobile at high speed. METHODS: The 14-year-old boy in the reported case fractured C1-C7, but had no neurologic sequelae. RESULTS: The fractures were treated with a halo vest after traction and reduction of the displaced odontoid fracture. All the fractures healed with no residual cervical instability. CONCLUSIONS: This case report is the first to describe a patient of any age who sustained simultaneous fractures of every cervical vertebra. Treatment with a halo vest was successful in protecting the cervical spine until healing was complete.

Accidents↗

The arterial blood supply of the cervical vertebrae of the ox (bos taurus l.).

The arterial supply to the cervical vertebrae of the ox was studied in 22 animals (Friesland, Jersey and Guernsey cross-breeds), ranging from near full-term foetuses to adults. Various techniques, including angiography and clearing of bone, were employed to expose the extra- and intraosseous distribution of the arteries and a description is given of a modified Spalteholtz clearing technique. The extraosseous nutrient arteries are described and illustrated. A uniform pattern emerged from the investigation and it is suggested that the main branches be named: (1) the artery of the vertebral arch; (b) the artery of the transverse process; (c) the basivertebral arteries. Frequent anastomoses between epi- and metaphysial vessels in young animals are reported, and stress is laid on the effective collateral supply maintained by the extra- and intraosseous nutrient vessels.

Animals↗

Aneurysmal bone cyst of the first cervical vertebrae in a child treated with percutaneous intralesional injection of calcitonin and methylprednisolone. A case report.

STUDY DESIGN: First published report of a child with an aneurysmal bone cyst (ABC) of the first cervical vertebrae treated successfully with intralesional injection of calcitonin and methylprednisolone. OBJECTIVES: To describe a safe and effective nonsurgical treatment method for an ABC of the first cervical vertebrae. SUMMARY OF BACKGROUND DATA: Aneurysmal bone cysts of the spine comprise from 3% to 20% of all such lesions. Upper cervical spine involvement is rare and these lesions are difficult to treat. Standard treatment with curettage and bone grafting or other alternatives such as radiation therapy or embolization may not be possible in this location. Percutaneous injection with a variety of agents has also been described. Methylprednisolone and calcitonin were selected in this case in an effort to combine the proposed angiostatic and fibroblastic inhibitory effects of steroid with the proposed osteoclastic inhibitory and promotion of new bony trabeculae formation effects of calcitonin. METHOD: This case was described, and pertinent literature reviewed. RESULTS: Sclerosis and shrinkage of the lesion with concomitant symptom resolution occurred after two injections with calcitonin and methylprednisolone via computed tomography (CT) guidance. No complications occurred. The lesion remained quiescent at a 2-year 7-month follow-up. CONCLUSIONS: Percutaneous intralesional injection of an ABC of the first cervical vertebrae with calcitonin and methylprednisolone in a child via CT guidance was a safe and effective treatment. This is a promising treatment for surgically inaccessible aneurysmal bone cysts.

Bone Cysts, Aneurysmal↗

Three-dimensional finite element modeling of a cervical vertebra: an investigation of burst fracture mechanism.

Finite element modeling was used to study the mechanical behavior of a cervical vertebra under axial compressive loading. A three-dimensional (3-D) finite element (FE) model of a mid-cervical vertebra using inhomogeneous material properties was generated from quantitative computed tomographic (CT) scan data. This model improved upon previous vertebral FE models by using a highly refined mesh to represent the 3-D variation in material properties of vertebral bone. Traumatic loading of the vertebra was simulated by applying an axial compressive displacement through linear spring elements. Bone strength was computed from the CT scan data and compared with predicted stress. Based on the maximum shear stress theory of failure, the model predicts initiation of failure in the central cancellous region of the vertebral body. The type of fracture pattern predicted by the model is consistent with the typical cervical burst fracture that is seen clinically after compressive loading of the cervical spine. As such, we have developed a tool that can be useful for validating proposed fracture mechanisms in the cervical spine.

Cervical Vertebrae↗

Transverse process fractures of the cervical vertebrae: are they insignificant?

Transverse process fractures of the cervical vertebrae have been considered rare and insignificant. In a retrospective study of 216 patients with cervical fractures evaluated by plain films and computed tomography, we found that transverse process fractures were common. Transverse process fractures were present in 24% of patients with cervical fractures and accounted for 13.2% of all cervical fractures. Cervical radiculopathy and brachial plexus palsy were present in 10% of patients with transverse process fractures. In 78% of transverse process fractures, CT scanning showed that the fracture extended into the transverse foramen. Vertebral angiography, performed in eight patients with fractures involving the transverse foramen, showed dissection or occlusion of the vertebral artery in seven (88%) instances. Two of these seven patients had clinical evidence of vertebral-basilar artery stroke. Vertebral angiography should be considered when patients with transverse process fractures extending into the transverse foramen develop signs and symptoms of vertebral-basilar artery insufficiency.

Adolescent↗

A patient with self-inflicted injuries of the cervical vertebrae and spinal cord.

INTRODUCTION: We encountered a patient with methamphetamine addiction who had self-inflicted injuries of the cervical vertebrae and spinal cord. MATERIALS AND METHODS: The patient hit his head on the wall many times and showed abnormal behavior due to the addiction. Radiograph and CT revealed cervical vertebral injuries. Clinical findings indicated that the injuries had affected the spinal cord. RESULTS: Conservative treatment was performed because reduction of the cervical vertebrae was good.

Adult↗

[A case of Parkinson's disease associated with pyogenic spondylitis in the cervical vertebrae].

A 68-year-old woman with Parkinson's disease (PD) was admitted due to aspiration pneumonia. The symptoms improved partly by administration of antimicrobial agents and a steroid-pulse treatment, but she suffered repeated MRSA pneumonia, which caused a long-term bed confinement. Shoulder pain that appeared after she started rehabilitation did not improve on administration of NSAIDs. We suspected pyogenic spondylitis in the cervical vertebraes based on the cervical X-rays and the cervical MRI. Patients of PD often have a shoulder pain due to various causes. When a patient with PD has a severe shoulder pain, we should suspect pyogenic spondylitis in the cervical vertebraes as one of the differential diagnoses. It is necessary to do immediately thorough imaging examinations.

Aged↗