3.1. Data Source

Studies were identified in PubMed, Rehabilitation and Sports, Scopus, Web of Science, and CINAHL and were published from the earliest time point until 1 May 2022. The search terms were: “Osteoporosis AND (bracing OR back orthosis OR spinal orthosis) AND kyphosis”. Grey literature (e.g., abstracts, conference proceedings, and editorials) and reviews were excluded. After the duplicates were removed, two authors (BSPP and GGPS) independently screened the titles and abstracts and then evaluated the full texts of potentially relevant studies. Disagreements were resolved through consultation with a third review author (CRM). Studies were eligible for inclusion if they met the eligibility criteria. All excluded studies were recorded, and the reasons for exclusion were provided.