Not so Fast: Extended Oral Antibiotic Prophylaxis Does Not Reduce 90-Day Infection Rate Following Joint Arthroplasty.

BACKGROUND: Periprosthetic joint infection (PJI) is a devastating complication following both total hip (THA) and knee (TKA) arthroplasty. Extended oral antibiotic (EOA) prophylaxis has been reported to reduce PJI following TJA in high-risk patients. The purpose of this study was to determine if EOA reduces PJI in all-comers and high-risk THA and TKA populations. METHODS: This is a retrospective cohort study, including 4,576 patients undergoing primary THA or TKA at a single institution from 2018 to 2022. Beginning in 2020, EOA prophylaxis was administered for 10 days following THA or TKA at our institution. Patients were separated into 2 cohorts (1,769 EOA, 2,807 no EOA) based on whether they received postoperative EOA. The 90-day and 1-year outcomes, with a focus on PJI, were then compared between groups. A subgroup analysis of high-risk patients was also performed. RESULTS: There was no difference in 90-day PJI rates between cohorts (EOA 1 versus no EOA 0.8%; P = .6). The difference in the rate of PJI remained insignificant at 1 year (EOA 1 versus no EOA 1%; P = .9). Similarly, our subgroup analysis of high-risk patients demonstrated no difference in postoperative PJI between EOA (n = 254) and no EOA (n = 396) (0.8 versus 2.3%, respectively; P = .2). Reassuringly, we also found no differences in the incidence of Clostridium difficile infection (EOA 0.1 versus no EOA 0.1%; P > .9) or in antibiotic resistance among those who developed PJI within 90 days (EOA 59 versus no EOA 83%; P = .2). CONCLUSIONS: With the numbers available for analysis, EOA prophylaxis was not associated with PJI risk reduction following primary TJA when universally deployed. Furthermore, among high-risk patients, there was no statistically significant difference. While we did not identify increased antibiotic resistance or Clostridium difficile infection, we cannot recommend wide-spread adoption of EOA prophylaxis, and clarification regarding the role of EOA, even in high-risk patients, is needed.

Impact of unplanned readmissions on lumbar surgery outcomes: a national study of 33,447 patients.

BACKGROUND CONTEXT: Unplanned readmissions following lumbar spine surgery have immense clinical and financial implications. However, little is known regarding the impact of unplanned readmissions on patient-reported outcomes (PROs) following lumbar spine surgery. PURPOSE: To evaluate the impact of unplanned readmissions, including specific readmission reasons, on patient reported outcomes 12 months after lumbar spine surgery. STUDY DESIGN/SETTING: A retrospective cohort study of prospectively collected data was conducted using patients included in the lumbar module of the Quality and Outcomes Database (QOD), a national, multicenter spine registry. PATIENT SAMPLE: A total of 33,447 patients who underwent elective lumbar spine surgery for degenerative diseases were included. Mean age was 59.8 (SD=14.04), 53.6% were male, 89.5% were white, 45.9% were employed, and 47.5% had private insurance. OUTCOME MEASURES: Unplanned 90-day readmissions and 12-month patient-reported outcomes (PROs) including numeric rating scale (NRS) scores for back and leg pain, Oswestry Disability Index (ODI) scores, EuroQol-5 Dimension (EQ-5D) scores, and North American Spine Society (NASS) patient-satisfaction scores. METHODS: The lumbar module of the QOD was queried for adults undergoing elective lumbar spine surgery for degenerative disease. Unplanned 90-day readmissions were classified into 4 groups: medical, surgical, pain-only, and no readmissions. Medical and surgical readmissions were further categorized into primary reason for readmission. 12-month PROs assessing patient back and leg pain (NRS), disability (ODI), quality of life (EQ-5D), and patient satisfaction were collected. Multivariable models predicting 12-month PROs were built controlling for covariates. RESULTS: A total of 31,430 patients (94%) had no unplanned readmission while 2,017 patients (6%) had an unplanned readmission within 90 days following lumbar surgery. Patients with readmissions had significantly worse 12-month PROs compared with those with no unplanned readmissions in covariate-adjusted models. Using Wald-df as a measure of predictor importance, surgical readmissions were associated with the worst 12-month outcomes, followed by pain-only, then medical readmissions. In separate covariate adjusted models, we found that readmissions for pain, SSI/wound dehiscence, and revisions were among the most important predictors of worse outcomes at 12-months. CONCLUSIONS: Unplanned 90-day readmissions were associated with worse pain, disability, quality of life, and greater dissatisfaction at 12-months, with surgical readmissions having the greatest impact, followed by pain-only readmissions, then medical readmissions. Readmissions for pain, SSI/wound dehiscence, and revisions were the most important predictors of worse outcomes. These results may help providers better understand the factors that impact outcomes following lumbar spine surgery and promote improved patient counseling and perioperative management.

Retired Orthopedic Surgeons' Reflections on Their Lives and Careers: A Cross-Sectional Study.

Background: Retired surgeons often have limited opportunities to disseminate their wisdom and expertise in a structured manner to their younger colleagues. In addition, when asked to reflect on their personal and professional lives, many physicians say they wish they had done something differently. The extent to which this is true of retired orthopedic surgeons is not known. Purpose: We sought to determine the percentage of retired orthopedic surgeons who say that they would like to have changed something in their life/career and delineate the most commonly desired changes. Methods: We conducted a cross-sectional study of retired orthopedic surgeons, by emailing a Qualtrics survey to 5864 emeritus members of the American Academy of Orthopaedic Surgeons (AAOS), with 1 initial email invitation in April 2021 followed by 2 reminders in May 2021. The survey employed a branching logic, with up to 16 questions designed to determine whether they would have done anything differently in their life/career. Results: The survey was completed by 1165 of 5864 emeritus AAOS members, for a response rate of nearly 20%. The 3 most represented surgical subspecialties were general orthopedics, adult reconstruction, and hand and upper extremity surgery. Respondents' average age was 74.9 years and age at retirement was 67.8 years; nearly half worked part-time before retiring. More than 80% of the participants said that they had retired at the appropriate time, and 28.5% said they wished they had done something differently. The wished-for changes most often noted were spending more time with family, spending more time on personal wellness, and selecting better practice partners. Conclusion: The results of our survey of retired orthopedic surgeons show that while most were satisfied with their lives and careers, some had regrets. These findings suggest that there may be factors in the work lives of current surgeons that could be altered to reduce regret. Further study is warranted.

Assessing the Insurance Deductible Effect on Outcomes After Elective Spinal Surgery.

BACKGROUND: Private insurers use the calendar deductible system, placing pressure on patients and medical personnel to perform medical services before the end of the year to maximize patient savings. The impact of the deductible calendar on patient-reported outcomes (PROs) after spine surgery is poorly understood. The objective of our study was to investigate if patients undergoing surgery in December had different PROs and demographics compared with all other months. METHODS: The Quality Outcome Database, a national spine registry, was queried for patients who underwent elective spine surgery between January 2012 and January 2021 for degenerative spine conditions. PROs and demographics were compared between the December and non-December groups using various statistical tests. RESULTS: A total of 978 patients (9.3%) underwent anterior cervical discectomy and fusion in December versus 9548 (90.7%) in other months. There was a significantly higher percentage of patients in December who had private insurance and were employed. A total of 1104 patients (8.5%) underwent lumbar fusion in December versus 11,826 (91.5%) in other months. There was a significantly greater chance of undergoing surgery in December if patients had private insurance and were employed. Although some PROs were statistically significant for the lumbar and cervical cohorts between December and non-December patients, none were clinically significant. CONCLUSIONS: Patients undergoing elective spine surgery in December were more likely to have private insurance and be employed. PROs for ACDF and lumbar fusions were not affected by surgical timing (December yes/no). Other spinal procedures directed at more chronic diseases might be more susceptible to external influence of insurance deductibles.

Frailty and Sarcopenia: Impact on Outcomes Following Elective Degenerative Lumbar Spine Surgery.

STUDY DESIGN: This is a retrospective review of prospectively collected data. OBJECTIVE: The aim was to evaluate the impact of frailty and sarcopenia on outcomes after lumbar spine surgery. SUMMARY OF BACKGROUND DATA: Elderly patients are commonly diagnosed with degenerative spine disease requiring surgical intervention. Frailty and sarcopenia result from age-related decline in physiological reserve and can be associated with complications after elective spine surgery. Little is known about the impact of these factors on patient-reported outcomes (PROs). METHODS: Patients older than 70 years of age undergoing elective lumbar spine surgery were included. The modified 5-item frailty index (mFI-5) was calculated. Sarcopenia was defined using total psoas index, which is obtained by dividing the mid L3 total psoas area by VB area (L3-TPA/VB). PROs included Oswestry disability index (ODI), EuroQual-5D (EQ-5D), numeric rating scale (NRS)-back pain, NRS leg pain (LP), and North American Spine Society (NASS) at postoperative 12 months. Clinical outcomes included length of stay (LOS), 90-day readmission and complications. Univariate and multivariable regression analyses were performed. RESULTS: Total 448 patients were included. The mean mFI-5 index was 1.6±1.0 and mean total psoas index was 1.7±0.5. There was a significant improvement in all PROs from baseline to 12 months ( P <0.0001). After adjusting for age, body mass index, smoking status, levels fused, and baseline PROs, higher mFI-5 index was associated with higher 12-month ODI ( P <0.001), lower 12-month EQ-5D ( P =0.001), higher NRS-L P ( P =0.039), and longer LOS ( P =0.007). Sarcopenia was not associated with 12-month PROs or LOS. Neither sarcopenia or mFI-5 were associated with 90-day complication and readmission. CONCLUSIONS: Elderly patients demonstrate significant improvement in PROs after elective lumbar spine surgery. Frailty was associated with worse 12 months postoperative ODI, EQ-5D, NRS-LP scores, and longer hospital stay. While patients with sarcopenia can expect similar outcomes compared with those without, the mFI-5 should be considered preoperatively in counseling patients regarding expectations for disability, health-related quality of life, and leg pain outcomes after elective lumbar spine surgery. LEVEL OF EVIDENCE: 3.

The impact of afterschool program attendance on academic outcomes of middle school students.

This evaluation examined the effects of afterschool programs-supported by an afterschool system intermediary organization (ASIO)-on middle school students' academic performance and examined how those effects varied by student characteristics and program engagement. In this longitudinal, quasi-experimental matched comparison group evaluation, propensity score matching was used to create demographically balanced samples of ASIO-supported afterschool program participants and nonparticipants. Students enrolled in the afterschool programs did not differ from non-participants in growth over time on most academic outcomes. Students attending the afterschool programs showed less growth on certain state test scores compared to nonparticipants. Student demographic characteristics did not consistently influence participant outcomes. Among program participants only, students who were enrolled more than 1 year demonstrated a 7-percentile-point increase in state test scores per year of program engagement. There was no consistent evidence that ASIO-supported afterschool program participation was associated with improved student academic outcomes. However, study results support increased emphasis on afterschool program retention, given that longer duration of participation in the afterschool programs was associated with more growth on multiple academic outcomes.

The interrelationship between concepts about agency and students' use of teachable-agent learning technology.

To successfully interact with software agents, people must call upon basic concepts about goals and intentionality and strategically deploy these concepts in a range of circumstances where specific entailments may or may not apply. We hypothesize that people who can effectively deploy agency concepts in new situations will be more effective in interactions with software agents. Further, we posit that interacting with a software agent can itself refine a person's deployment of agency concepts. We investigated this reciprocal relationship in one particularly important context: the classroom. In three experiments we examined connections between middle school students' concepts about agency and their success learning from a teachable-agent-based computer system called "Betty's Brain". We found that the students who made more intentional behavioral predictions about humans learned more effectively from the system. We also found that students who used the Betty's Brain system distinguished human behavior from machine behavior more strongly than students who did not. We conclude that the ability to effectively deploy agency concepts both supports, and is refined by, interactions with software agents.