UC Irvine Department of Medicine

Background

Patients who undergo lumbar discectomy may experience ongoing lumbosacral radiculopathy (LSR) and seek spinal manipulative therapy (SMT) to manage these symptoms. We hypothesized that adults receiving SMT for LSR at least one year following lumbar discectomy would be less likely to undergo lumbar spine reoperation compared to matched controls not receiving SMT, over two years' follow-up.

Methods

We searched a United States network of health records (TriNetX, Inc.) for adults aged ≥ 18 years with LSR and lumbar discectomy ≥ 1 year previous, without lumbar fusion or instrumentation, from 2003 to 2023. We divided patients into two cohorts: (1) chiropractic SMT, and (2) usual care without chiropractic SMT. We used propensity matching to adjust for confounding variables associated with lumbar spine reoperation (e.g., age, body mass index, nicotine dependence), calculated risk ratios (RR), with 95% confidence intervals (CIs), and explored cumulative incidence of reoperation and the number of SMT follow-up visits.

Results

Following propensity matching there were 378 patients per cohort (mean age 61 years). Lumbar spine reoperation was less frequent in the SMT cohort compared to the usual care cohort (SMT: 7%; usual care: 13%), yielding an RR (95% CIs) of 0.55 (0.35-0.85; P = 0.0062). In the SMT cohort, 72% of patients had ≥ 1 follow-up SMT visit (median = 6).

Conclusions

This study found that adults experiencing LSR at least one year after lumbar discectomy who received SMT were less likely to undergo lumbar spine reoperation compared to matched controls not receiving SMT. While these findings hold promise for clinical implications, they should be corroborated by a prospective study including measures of pain, disability, and safety to confirm their relevance. We cannot exclude the possibility that our results stem from a generalized effect of engaging with a non-surgical clinician, a factor that may extend to related contexts such as physical therapy or acupuncture.

Registration

Open Science Framework ( https://osf.io/vgrwz ).

Purpose

Young adult childhood cancer survivors (YACCSs) are often impacted by cancer-related cognitive impairment (CRCI) and psychological distress. Using the Project Forward Cohort, we evaluated the relationship between CRCI and substance use behaviors.

Methods

YACCSs were surveyed between 2015 and 2018 (N = 1,106, female = 50.8%, Hispanic = 51.5%, median age = 25.5 years). Associations between CRCI and substance use (tobacco, binge drinking, marijuana, prescription drug misuse, and e-cigarette/vaporizer) were examined in multivariate logistic or log-binomial regressions, adjusting for child at diagnosis (0-14 years), years since diagnosis, sex, race/ethnicity, cancer type, and treatment intensity. Mediation analysis was performed to determine opportunities for interventions.

Results

CRCI was reported by 144 (13.0%) survivors. The highest prevalence was observed in CNS cancers (25.4%) and leukemia (13.3%) survivors. After covariate adjustment, CRCI was associated with 2.26 times the odds of prior 30-day vaping (95% CI, 1.24 to 4.11; P = .007). Mediators with significant indirect effects in the CRCI-vaping relationship include depressive symptoms (Center for Epidemiological Studies Depression Scale) and having two or more cancer-related late effects (P < .05).

Conclusion

CRCI among YACCSs was associated with reports of vaping. Oncologists should screen for vaping behavior if CRCI is apparent. Increasing access to long-term follow-up clinics, addressing physical and mental health issues, and monitoring and educating on vaping and other substance use behaviors is recommended to improve the long-term health of YACCSs.