Chronic low back pain during COVID-19 lockdown: is there a paradox effect?

The coronavirus 2019 (COVID-19) pandemic led to a compulsory lockdown of 3 months with strict restrictions. The impact of the COVID-19 pandemic has shown broad repercussions on patients with chronic pain; especially for conditions that present a significant emotional participation such as chronic low back pain (cLBP). We performed a prospective study on 50 patients. Pre- and 1-month post-lockdown questionnaires such as: the Impact of Event Scale (IES), the Oswestry Disability Index (ODI), the Roland–Morris questionnaire (RMQ) and the visual analogue scale (VAS) for back and leg pain intensity were collected. The mean time of the evolution of cLBP was 33.04 months (range 5–120 months). Eighteen (36%) patients improved their cLBP (i-cLBP), whereas for 14 (28%) it was worse (w-cLBP). Cox multivariate proportional hazard model identified that MODIC 1 disc disease [OR 19.93, IC95% (2.81–102.13), p = 0.015] and at-home workouts [OR 18.854, IC95% (1.151–204.9), p = 0.040] were good prognosis factors of the improvement of cLBP while subclinical/mild Covid-19 anxiety (IES score   26) significantly improved their cLBP [OR 0.58, IC95% (0.025–0.834), p = 0.01]. Lockdown affected the somatic component of cLBP by decreasing activities and physical measures, whereas the SARS-CoV-2 pandemic spectrum paradoxically improved the psychic and emotional component of cLBP.