https://www.selleckchem.com/products/OSI-906.html 8%) and disc degeneration (33.6%). Age, male gender, spinal parameters including PI, bone mineral density, back muscle strength, and gait ability differed significantly between the groups, whereas frailty and sarcopenia were not significantly different. Low PI, low lumbar lordosis, elder age, male gender, high BMI, and weak back muscle strength were significant risk factors for lumbar osteophyte formation and disc degeneration. CONCLUSIONS Low PI was identified as a risk factor for lumbar osteophyte formation and disc degeneration, both of which reduce physical QOL in middle-aged and elderly people. These slides can be retrieved under Electronic Supplementary Material.PURPOSE Clinical registries are used for quality management and clinical research. Due to the importance and implications of both aims, completeness and high quality of data are of paramount importance. However, this remains uncertain, as none of these registries have implemented independent monitoring. The aim of this study was to determine the accuracy and completeness of registry data o the example of the German Spine Society (DWG) registry. METHODS In a prospective study, audits by a board-certified neurosurgeon were conducted at certified spine centers with mandatory registry input, a setting comparable to most existing registries worldwide. A 2-week period was analyzed, and any discrepancy between patients' charts and the registry entry was evaluated. A median of 31 items per patient was evaluated including completeness and accuracy of data. RESULTS Out of 17 centers willing to participate, 4 were still lacking any data entries. Even in the remaining 13 centers eligible for audits, 28.50% (95%-CI = [22.46-34.55]) of entries were finalized only after the audits were announced. Only 82.55% (95%-CI = [79.12-85.98]) of surgeries were documented, and on average 14.95% (95%-CI = [10.93-19.00]) of entries were not accurate with a wide variation (range; 6