“…109 The LSDI 109,110,119,[111][112][113][114][115][116][117][118] was the most commonly included PROM, followed by the Visual Analogue Scale (VAS). [120][121][122][123][124][125][126][127][128] Several postoperative stiffness indicators were included in studies investigating outcome measures and complications after surgical intervention (see Table 2). For example, stiffness was reported as a symptom of myelopathy, 129,130 prolotherapy, 131 cervical dorsal rhizotomy, 132 and postoperative complication of disc arthroplasty.…”