Objectives: The objectives of this study are (1) to quantify social media use among active American Cervical Spine Research Society (CSRS) members; (2) to determine if there is an association between practice setting, region, or years of active membership and social media use. Summary of Background Data:Many patients now seek health and physician information online, including on social media. Indeed, social media use by orthopedic surgeons has been shown to be associated with more and improved ratings on physician review websites. Further, social media can provide a means for improved doctor-patient relationships, educational endeavors, and professional networking. However, there is a paucity of literature examining social media use among spine surgeons. Materials and Methods:In January 2019, the CSRS membership directory was used to identify all active American spine surgeon members. Through a Google search, social media use of each spine surgeon on the following platforms was identified: provider page/ official website; Facebook; Twitter; Instagram; LinkedIn; and YouTube. In addition, surgeon characteristics were recorded. The percentage of spine surgeons using each social media platform was reported. Bivariate analysis was used to compare social media use by practice setting, region, and years of active CSRS membership.Results: Nearly all spine surgeons have a provider page/official website (98%) and over half (56%) have a LinkedIn presence. Less than one third of spine surgeons are on any of the remaining social media platforms analyzed. The least frequently used social media platform was Instagram (3.2%). There was no difference in any social media platform use by practice setting, region, and years of active CSRS membership.Conclusions: As social media becomes even more common place and the role of it in medical care continues to be better defined, there is notable room for increased social media use among active American members of the CSRS.

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Study Design: Retrospective Objective: To evaluate functional outcomes and characteristics associated with gunshot wound (GSW) to the spine. Methods: Patients with GSW to the spine managed at a Level 1 Trauma Center from January 2003 to December 2017 were enrolled. Patient demographics, diagnoses, level of injury, American Spinal Injury Association (ASIA) score, ambulatory status at follow-up, bowel and bladder function, clinical improvement, and mortality were evaluated. Clinical improvement was defined as a progression in ambulatory status category at latest follow up. Results: 51 patients with GSW of the spine were identified. 48 (94.1%) were male and 3 (5.9%) were female, with a mean age of 27 years-old (range 15-56). 38 (74.5%) were Caucasian, 7 (13.7%) were African American, 1 (2.0%) Asian-American, and 5 (9.8%) were Other/Unknown. 46 (90.2%) patients had GSW related spinal fractures and 44 (86.3%) had neurological deficits. Among patients with neurologic deficits, 5 (9.8%) had Cauda Equina Syndrome, 1 (2%) had Brown-Sequard Syndrome, and 38 (74.5%) spinal cord injuries: ASIA A 26 (68.4%); ASIA B 3 (7.9%); ASIA C 7 (18.4%); ASIA D 2 (5.3%). At mean follow-up time of 4.2 years (SD 3.9), 27 (52.9%) patients were wheelchair bound, 11 (21.6%) were ambulating with assistance, and 13 (25.5%) had normal ambulation. ASIA grade (A or B) was significantly, P < 0.00001, associated with being wheelchair bound and having neurogenic bowel or bladder at follow-up. Conclusions: Most spinal GSW patients (70.6%) did not have any clinical improvement in ambulatory status and most injuries were ASIA A.

Introduction: Revision total hip arthroplasty in the setting of acetabular bone loss remains a challenging clinical entity. Deficiencies of the acetabular rim, walls, and/or columns may limit the bony surface area and initial acetabular construct stability necessary for osseointegration of cementless components. Press-fit acetabular components with supplemental acetabular screw fixation represent a common technique aimed to minimize implant micromotion and allow for definitive osseointegration. Although acetabular screw fixation is commonly practiced in revision hip arthroplasty, few studies to date have examined the screw properties associated with maximal acetabular construct stability. The purpose of the present report is to examine acetabular screw fixation in a pelvis model mimicking Paprosky IIB acetabular bone loss. Methods: Measuring bone-implant interface micromotion as a surrogate for initial implant stability, experimental models assessed the effect of screw number, screw length, and screw position on construct stability subject to a cyclic loading protocol designed to replicate joint reaction forces of two common daily activities. Results: Trends towards increasing stability were demonstrated with increasing screw number, increasing screw length, and concentrating screws in the supra-acetabular dome. All experimental constructs yielded micromotion levels sufficient for bone ingrowth, except when screws in the dome were moved to the pubis and ischium. Conclusions: When using a porous coated revision acetabular implant to treat Paprosky IIB defects, screws should be used, and furthermore, increasing number, length, and position within the acetabular dome may help further stabilize the construct.