Spine
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Comparative Study
Biomechanical analysis comparing three C1-C2 transarticular screw salvaging fixation techniques.
This is an in vitro biomechanical study. ⋯ Fixation of atlantoaxial complex using unilateral transarticular screw supplemented with contralateral C1 lateral mass and C2 intralaminar screws is biomechanically equivalent to C1 lateral mass and C2 pedicle screws and both are biomechanically superior to C1-C2 sublaminar wire in axial rotation.
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Observational prospective study. ⋯ This first Spanish version of the Neck Disability Index is reliable, valid, and sensitive to change.
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Laboratory investigation, ex vivo. ⋯ The low degree of heating and minor artifacts associated with the Resolve-based cervical external immobilization devices indicated that these products are safe for patients undergoing MRI at 3-Tesla.
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A validation study of the Acute Low Back Pain Screening Questionnaire Dutch Language Version (ALBPSQ-DLV). ⋯ The internal consistency and both construct and convergent validity of the ALBPSQ-DLV are well established in a Dutch population of 69 patients with (sub) acute nonspecific LBP referred to primary care physical therapy.
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A cadaveric study with postoperative computed tomography scan to evaluate instrumentation placement. ⋯ Use of the S2 iliac technique may be a viable option in minimally invasive thoracolumbar deformity surgery. The screws were all in-line and connected easily to the cephalad instrumentation. On average, a length of approximately 90 mm was attained. No visceral or neurovascular structure was injured. Visualization of the first dorsal foramen and a standard anteroposterior and inlet radiograph were used for placement.