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  • 1
    In: Clinical Biomechanics, Elsevier BV, Vol. 31 ( 2016-01), p. 59-64
    Type of Medium: Online Resource
    ISSN: 0268-0033
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2016
    detail.hit.zdb_id: 632747-3
    SSG: 31
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  • 2
    Online Resource
    Online Resource
    Ovid Technologies (Wolters Kluwer Health) ; 2017
    In:  Spine Vol. 42, No. 10 ( 2017-05-15), p. E567-E574
    In: Spine, Ovid Technologies (Wolters Kluwer Health), Vol. 42, No. 10 ( 2017-05-15), p. E567-E574
    Abstract: A single-center, retrospective study. Objective. The aim of this study was to determine the safety and outcomes of total disc replacement (TDR) as an outpatient procedure in the ambulatory surgery center (ASC). Summary of Background Data. Anterior cervical discectomy and fusion (ACDF) has been demonstrated to be safe in the outpatient setting, as the awareness of same-day surgery procedures is on the rise due to better outcome and shorter recovery time. There is a need for motion preservation in a subset of patients TDR provides a solution. Transitioning spine surgery to the outpatient setting including cervical TDR is the next logical step. Methods. The medical records of 55 consecutive patients undergoing single level TDR (Group 1) were compared with our control group of 55 patients who had single-level ACDF (Group 2). Outcomes assessed included Visual Analogue Scale (VAS) neck, arm, neck disability index (NDI) scores, and complication rate. Results. Fifty-five patients in Group 1 (TDR, 60%) were male with the group's mean age being 42.6 ± 1.4 years and body mass index (BMI) 24.8 ± 1.2 kg/m 2 . Fifty-five patients in Group 2 (ACDF), 57%, were male with the group's mean age being 53 ± 1.0 years and mean BMI 27.9 ± 0.8 kg/m 2 . There was no statistically significant intergroup difference in 2-year VAS neck, arm and NDI scores. Dysphagia was the most common postoperative compliant in both groups (six patients), with no intergroup significance, P  = 0.4. Conclusion. In the ambulatory setting, TDR has shown statistical significant intragroup improvement in VAS neck, arm pain scores, and NDI scores ( P   〈  0.001). In this study, no patients reported serious complications, no incidence of hematoma formation, or worsening postop pain. We conclude that single-level TDR can be safely done in an ASC with satisfactory clinical and patient-reported outcomes. This is comparable to single-level ACDF in the outpatient setting and previous 2-year TDR studies. Level of Evidence: 3
    Type of Medium: Online Resource
    ISSN: 0362-2436 , 1528-1159
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2017
    detail.hit.zdb_id: 2002195-1
    detail.hit.zdb_id: 752024-4
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  • 3
    Online Resource
    Online Resource
    Ovid Technologies (Wolters Kluwer Health) ; 2017
    In:  Journal of the American Academy of Orthopaedic Surgeons Vol. 25, No. 5 ( 2017-05), p. 389-395
    In: Journal of the American Academy of Orthopaedic Surgeons, Ovid Technologies (Wolters Kluwer Health), Vol. 25, No. 5 ( 2017-05), p. 389-395
    Abstract: In anterior cervical diskectomy and fusion (ACDF), misaligned plates are concerning because of the risk of screw-and-plate failure; however, these plates also hypothetically have the potential for asymmetric micromotion on the facet and uncovertebral joint. The aim of this study was to determine whether misaligned plate placement during ACDF had clinical benefits compared with straight plate placement. Methods: Postoperative AP radiographs of 128 consecutive patients who underwent ACDF with anterior cervical plate (ACP) fixation were reviewed, and plate alignment was assessed. Patients were separated into control group 1 (straight plates) or group 2 (misaligned plates). Results: The mean age of patients was 51.5 ± 0.9 years, and women represented 51% of the total population. There was no significant difference between groups with regard to the preoperative visual analog scale (VAS) and Neck Disability Index (NDI) scores ( P = 0.744 and P = 0.943, respectively). At 6 weeks postoperatively, the VAS scores for group 1 decreased from 7.6 ± 0.2 to 4.0 ± 0.2 compared with the scores in group 2, which decreased from 7.7 ± 0.2 to 2.1 ± 0.1, which demonstrated statistical significance ( P = 0.019). At 2-year follow-up, no significant difference was demonstrated between the groups’ VAS and NDI scores ( P = 0.670 and P = 0.266). Conclusion: Misaligned plates have increased torsional strength and are associated with better clinical outcomes compared with those of straight plates in the early postoperative period. After fusion, no significant difference in clinical outcomes between the groups was noted, which may reduce the concerns regarding misaligned plates. Level of Evidence: Retrospective comparative study
    Type of Medium: Online Resource
    ISSN: 1067-151X , 1940-5480
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2017
    detail.hit.zdb_id: 1200524-1
    detail.hit.zdb_id: 2078484-3
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  • 4
    Online Resource
    Online Resource
    Elsevier BV ; 2018
    In:  Journal of Orthopaedics Vol. 15, No. 4 ( 2018-12), p. 935-939
    In: Journal of Orthopaedics, Elsevier BV, Vol. 15, No. 4 ( 2018-12), p. 935-939
    Type of Medium: Online Resource
    ISSN: 0972-978X
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2018
    detail.hit.zdb_id: 2240839-3
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  • 5
    In: Journal of Orthopaedics, Elsevier BV, Vol. 15, No. 2 ( 2018-06), p. 412-415
    Type of Medium: Online Resource
    ISSN: 0972-978X
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2018
    detail.hit.zdb_id: 2240839-3
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  • 6
    In: Clinical Spine Surgery: A Spine Publication, Ovid Technologies (Wolters Kluwer Health), Vol. 30, No. 6 ( 2017-07), p. E791-E797
    Abstract: Level III. Objective: To report on the outcomes of midline cortical bone trajectory (CBT) pedicle screw surgical technique for posterior lumbar fixation in the outpatient surgery center (OSC) compared with traditional pedicle screws in the hospital. Summary of Background Data: Traditional pedicle screws have been the gold standard for posterior lumbar fusion. Advances in spine surgery, including less invasive procedures have propelled the design of instruments and implants to achieve greater posterior spinal fixation, with decreased tissue destruction and higher safety margins. Biomechanical studies have validated the superior pullout strength of cortical screws versus the traditional pedicle screws and represent an opportunity to perform safe lumbar fusions in OSCs with same day discharge. Materials and Methods: The medical records of 60 patients with prospectively collected data were reviewed. Two matched cohort groups consisting of 30 patients each, CBT pedicle screws performed in OSC patients (group 1) was compared with traditional pedicle screws performed in hospital patients (group 2). Outcomes were assessed with self-reported Visual Analog Scale (VAS) scores, Oswestry Disability Index scores, and radiologic fusion rate. Results: Totally, 33 males and 27 females, age range (28–75), average 58±3 years. Average body mass index was 29±1.15 kg/m 2 . A total of 65% of surgeries were at L5–S1 level. Significant improvement noted in VAS back pain scores in the OSC group from 7.8±0.5 to 2.5±0.7, P =0.001. Comparing intergroup VAS back pain scores and Oswestry Disability Index scores, OSC group demonstrated significant improvement, P =0.004 and 0.027, respectively. Fusion rate at 2 years was similar, P =0.855 between groups. Conclusions: We successfully transitioned our lumbar fusions from hospitals to OSCs using a midline CBT pedicle screw technique. Although traditional pedicle screw placement is effective and may be viable in an OSC, we see more advantages to use midline cortical screws over traditional pedicle screws.
    Type of Medium: Online Resource
    ISSN: 2380-0186
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2017
    detail.hit.zdb_id: 2849646-2
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  • 7
    Online Resource
    Online Resource
    Ovid Technologies (Wolters Kluwer Health) ; 2017
    In:  Clinical Spine Surgery: A Spine Publication Vol. 30, No. 10 ( 2017-12), p. E1352-E1358
    In: Clinical Spine Surgery: A Spine Publication, Ovid Technologies (Wolters Kluwer Health), Vol. 30, No. 10 ( 2017-12), p. E1352-E1358
    Abstract: Level III. Purpose: To retrospectively review the eligibility of surgical patients meeting predetermined outpatient surgery criteria in a single-surgeon private practice. Summary of Background Data: There is a burgeoning awareness among patients, surgeons, and insurers of the cost benefits and safety of outpatient spine surgeries. At the end of 2014, Centers for Medicare & Medicaid Services have released its final 2015 payment rules and codes for spinal decompression and fusion. This move confirms the safety of procedures being performed in the ambulatory surgery centers (ASCs). Methods: We conducted a database review between 2008 and 2014 and identified 1625 orthopedic procedures. All nonsurgical spine procedures were excluded from the study. Eligibility for outpatient spine surgery was based on criteria generated from a combination of published standard of care for major operations and the chief surgeon’s experience. A matched cohort based on type of surgery in each facility of all spine surgery patients was created, group 1 (hospital patients) and group 2 (ASC patients). Results: A total of 708 patients underwent spinal surgery during this time period with a 53% female population. A total of 557 of 708 (79%) patients were eligible for outpatient spine surgery. There were 210 surgical procedures in group 1 (inpatient) comprised of 72 decompression and 138 fusion procedures. In group 2 (outpatient), there were 347 procedures made up of 150 patients undergoing decompression and 197 undergoing fusion or disc replacement. To confirm that hospital procedures are eligible to be performed in the ASC, the χ 2 test was performed. We found that ASC-eligible hospital patients can indeed be done in an ASC ( P =0.037). Conclusions: Outpatient spine surgery is feasible in 79% of patients in this single-surgeon private practice. On the basis of these results, a majority of spine procedures can be performed in an outpatient setting following our eligibility criteria.
    Type of Medium: Online Resource
    ISSN: 2380-0186
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2017
    detail.hit.zdb_id: 2849646-2
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  • 8
    In: Clinical Spine Surgery: A Spine Publication, Ovid Technologies (Wolters Kluwer Health), Vol. 32, No. 10 ( 2019-12), p. E469-E473
    Abstract: This is a level III retrospective study. Objective: The authors aim to review the outcomes and complications of ball and socket total disk replacements (TDRs). Summary of Background Data: TDR is a motion-preserving technique that closely reproduces physiologic kinematics of the cervical spine. However, heterotopic ossification and spontaneous fusion after implantation of the total cervical disk have been reported in several studies to decrease the range of motion postulated by in vitro and in vivo biomechanical studies. Methods: The medical records of 117 consecutive patients undergoing cervical TDR over a 5-year period with Mobi-C, Prodisc-C, Prestige LP, and Secure-C implants were followed. Outcomes assessed included Visual Analogue Scale neck and arm and Neck Disability Index scores. The radiographic assessment looked at heterotopic ossification leading to fusion and complication rates. Results: Of the 117 patients that underwent TDR, 56% were male with the group’s mean age being 46.2±10.3 years and body mass index of 18.9±13.6 kg/m 2 . The longest follow-up was 5 years with Prodisc-C group, with overall fusion noted in 16% of patients. One patient was also noted to have fusion which was not seen radiographically but noted intraoperatively for adjacent segment disease. There has been no demonstrable radiographic fusion seen in the Prestige LP group, however, the follow-up has only been 12–24 months for this group. Conclusion: In this study, we have demonstrated radiographic fusion anterior to the ball and socket TDR as well as the uncovertebral joint. We postulate that with the use of a mobile core disk there is an increased potential for fusion leading to a nonfunctional disk replacement.
    Type of Medium: Online Resource
    ISSN: 2380-0186
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2019
    detail.hit.zdb_id: 2849646-2
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  • 9
    Online Resource
    Online Resource
    Elsevier BV ; 2019
    In:  Journal of Orthopaedics Vol. 16, No. 5 ( 2019-09), p. 390-392
    In: Journal of Orthopaedics, Elsevier BV, Vol. 16, No. 5 ( 2019-09), p. 390-392
    Type of Medium: Online Resource
    ISSN: 0972-978X
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2019
    detail.hit.zdb_id: 2240839-3
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  • 10
    Online Resource
    Online Resource
    Elsevier BV ; 2020
    In:  Journal of Orthopaedics Vol. 21 ( 2020-09), p. 375-378
    In: Journal of Orthopaedics, Elsevier BV, Vol. 21 ( 2020-09), p. 375-378
    Type of Medium: Online Resource
    ISSN: 0972-978X
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2020
    detail.hit.zdb_id: 2240839-3
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