Association of musculoskeletal pain in other body parts with new-onset shoulder pain: A longitudinal study among survivors of the Great East Japan Earthquake

Yoshihiro Hagiwara, Yutaka Yabe, Takuya Sekiguchi, Yumi Sugawara, Masahiro Tsuchiya, Shinichirou Yoshida, Takahiro Onoki, Tadahisa Takahashi, Jun Iwatsu, Ichiro Tsuji, Eiji Itoi

Research output: Contribution to journalArticlepeer-review

Abstract

Objective Shoulder pain is a common health problem coexisting with other musculoskeletal pain. However, the effects of pre-existing musculoskeletal pain on the development of shoulder pain are not clear. The present study aimed to elucidate the association between coexisting musculoskeletal pain at other body sites and new-onset shoulder pain among survivors of the Great East Japan Earthquake (GEJE). Design This is a longitudinal study. Setting The study was conducted at the severely damaged coastal areas in Ishinomaki and Sendai cities. Participants The survivors who did not have shoulder pain at 3 years after the GEJE were followed up 1 year later (n=2131). Interventions Musculoskeletal pain (low back, hand and/or foot, knee, shoulder and neck pain) was assessed using self-reported questionnaires. Main outcome measures The outcome of interest was new-onset shoulder pain, which was defined as shoulder pain absent at 3 years but present at 4 years after the disaster. The main predictive factor for new-onset shoulder pain was musculoskeletal pain in other body parts at 3 years after the GEJE; this was categorised according to the number of pain sites (0, 1, ≥2). Multiple regression analyses were conducted to calculate the odds ratio (OR) and 95% confidence interval (CI) for new-onset shoulder pain due to musculoskeletal pain in other body parts. Results The incidence of new-onset shoulder pain was 6.7% (143/2131). Musculoskeletal pain in other body parts was significantly associated with new-onset shoulder pain. Using the survivors without other musculoskeletal pain as reference, the adjusted OR and 95% CI for new-onset shoulder pain were 1.86 (1.18 to 2.94) for those with one body part and 3.22 (2.08 to 4.98) for those with ≥2 body parts presenting with musculoskeletal pain (p<0.001). Conclusions Pre-existing musculoskeletal pain in other body parts was significantly associated with new-onset shoulder pain among survivors; this provides useful information for clinical and public health policies.

Original languageEnglish
Article numbere041804
JournalBMJ open
Volume11
Issue number2
DOIs
Publication statusPublished - 2021 Feb 15

Keywords

  • epidemiology
  • pain management
  • public health
  • shoulder

ASJC Scopus subject areas

  • Medicine(all)

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