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37 Possible Causes for Atlanto-Occipital Instability

  • Joint Dislocation

    Flatness of the bilateral atlanto-occipital joint may have induced this instability.[ncbi.nlm.nih.gov] A lateral cervical radiograph in the neutral position 1 year after surgery showed the reduction of atlanto-occipital joint, moreover, it was maintained even in an extended[ncbi.nlm.nih.gov]

  • Nystagmus

    Incidence and characteristics of voluntary nystagmus. Abstract A survey of a college age population revealed that 8% could produce voluntary nystagmus. Seventy-nine per cent of this sample had relatives who could also produce it. A systematic investigation of the characteristics of voluntary nystagmus under a[…][dx.doi.org]

  • Skeletal Dysplasia

    He has bilateral inguinal hernias and atlanto-axial as well as atlanto-occipital instability that have not been previously associated with B3GAT3 mutations.[ncbi.nlm.nih.gov]

  • Rheumatoid Arthritis

    […] from erosive synovitis in the atlantoaxial, atlanto-odontoid, and atlanto-occipital joints and the bursa between the odontoid and the transverse ligament (see the image below[emedicine.medscape.com] The destructive synovitis results in ligamentous laxity and bony erosion with resultant cervical instability and subluxation. [15, 16, 17] Atlantoaxial subluxation results[emedicine.medscape.com]

  • Spinal Trauma

    […] the atlanto-occipital and atlantoaxial articulations, and a combined 24 of motion may be achieved. 1 Flexion is limited by contact between the odontoid process and the anterior[anesthesiology.pubs.asahq.org] The Adult Cervical Spine: Stability, Injury, and Instability Movement and Stability of the Upper Cervical Spine Flexion–extension occurs in the upper cervical spine at both[anesthesiology.pubs.asahq.org]

  • Teardrop Fracture of the Cervical Spine

    Occipital-Cervical Spine (Occiput-C2) Atlanto-Occipital Dislocation (AOD) Occipital Condyle Fracture Atlanto-Axial Instability Atantoaxial Rotatory Subluxation Atlas Fractures[uscspine.com] Occipital Condyle Fractures Atlanto-Axial (C1-C2) Instability (TAL Insufficiency) Cord at risk if 5mm instability If 3 attenuated, 5 ruptured, 7mm need surgery If C1 fx with[uscspine.com] Atlanto-Occipital Dislocation (AOD) Initially, all should be carefully reduced with positioning, halo vest. Almost all require Occ-C2 PSF.[uscspine.com]

  • Cervical Spine Fracture

    Occipital-Cervical Spine (Occiput-C2) Atlanto-Occipital Dislocation (AOD) Occipital Condyle Fracture Atlanto-Axial Instability Atantoaxial Rotatory Subluxation Atlas Fractures[uscspine.com] Occipital Condyle Fractures Atlanto-Axial (C1-C2) Instability (TAL Insufficiency) Cord at risk if 5mm instability If 3 attenuated, 5 ruptured, 7mm need surgery If C1 fx with[uscspine.com] Atlanto-Occipital Dislocation (AOD) Initially, all should be carefully reduced with positioning, halo vest. Almost all require Occ-C2 PSF.[uscspine.com]

  • Cerebellar Ataxia

    Cerebellar ataxia is a form of ataxia originating in the cerebellum. Non-progressive congenital ataxia (NPCA) is a classical presentation of cerebral ataxias. Cerebellar ataxia can occur as a result of many diseases and may present with symptoms of an inability to coordinate balance, gait, extremity and eye[…][en.wikipedia.org]

  • Accessory Nerve Palsy

    An injury to the spinal accessory nerve is mostly reported after surgical procedures performed in the posterior triangle of the neck. In addition, it may be caused by fractures in the jugular foramina, traumas or skull base tumors. Clinically, paralysis of the trapezius muscle leads to weakness, downward rotation[…][ncbi.nlm.nih.gov]

  • Atlanto-Occipital Instability

    Abstract A patient with Down's syndrome and asymptomatic atlanto-occipital instability is described.[ncbi.nlm.nih.gov] It is proposed that the Type I odontoid fracture is a likely manifestation of atlanto-occipital instability and rarely occurs as an isolated or stable injury.[ncbi.nlm.nih.gov] Abstract A 48-year-old woman with an extensive pituitary adenoma developed atlanto-occipital instability secondary to erosion of the base of the skull by the tumor.[ncbi.nlm.nih.gov]

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