Letter to the Editor concerning “The role of non-rigid cervical collar in pain relief and functional restoration after whiplash injury: a systematic review and a pooled analysis of randomized controlled trials” by Ricciardi L, et al. (Eur Spine J; [2019] 28:1821–1828)

[摘要] We read with interest the systematic review by Ricciardi et al. [1] on the efect of non-rigid cervical collar (nRCC) in the rehabilitation of whiplash injury. The conclusion of their review favors an active “non-immobilization” approach [1], in line with most literature on the topic. However, after reading the review, we do have some methodological concerns that could have signifcant impact on the interpretation of the fndings.