Semi-automated Hip Morphology Software Programme (SHIPS): Read Me File S.Thiagarajah1, L.Yang1, JM.Wilkinson1. 1Academic Unit of Bone Metabolism, Department of Human Metabolism, University of Sheffield, Sheffield, United Kingdom and NIHR Biomedical Research Unit for Musculoskeletal Disease, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK, 2011 . LICENSE AND DISTRIBUTION The Semi-automated HIP morphology Software programme (SHIPS) is freeware and can be used by anyone free of charge. Re-distribution without the authors’ permission is forbidden. WARRANTIES The program comes with no warranties whatsoever. CITATION If you use the Semi-automated Hip Morphology Software Programme (SHIPS) please cite it as: S.Thiagarajah, S.J. MacInnes, L.Yang, M.Doherty, JM.Wilkinson. Quantifying the Characteristics of the Acetabulum and Proximal Femur Using a Semi-automated Hip Morphology Software Programme (SHIPS). Hip International, in press. BACKGROUND An individual’s risk of developing hip osteoarthritis (OA) associates with joint shape. However, validated accurate tools to quantify these morphological characteristics are few. We developed a Matlab-based Semi-automated HIP Software program (SHIPS) that measures 10 morphologic characteristics of the hip that associate with OA using a digitized radiograph. INPUT Digitised radiograph (JPEG, TIFF). Minimum exposure: Pelvis AP. REQUIREMENTS Matlab R2007b (MathWorks Inc, Cambridge, UK) or more recent versions. Download available: http://www.mathworks.co.uk/products/matlab/ INSTALLATION (WINDOWS) Copy SHIPS file into your computer RUNNING THE PROGRAM Run Matlab. In Matlab terminal type <SHIPS> Browse folders to identify JPEG/TIFF image to be analysed. Follow the user-prompts on-screen. OUTPUT Excel spreadsheet sent to the same folder as those of the first digitized radiograph to be analysed. Open excel spreadsheet. The acetabular angular measurement characteristics are acetabular tilt (AT), horizontal toit externe (HTE), lateral centre-edge angle (LCEA), and Sharpe’s angle (SA). The software also calculates the acetabular index depth to width ratio (AIDWR). The calculated proximal femoral angular measurement characteristics are the alpha angle (AA), the modified proximal femoral angle (MPFA), and the femoral neck-shaft angle (FNSA). The calculated proximal femoral linear measurement ratios are the femoral head-to-neck ratio (FHFNR) and the femoral neck length-to-width ratio (FNLWR). In addition, are several linear measurements (recorded in pixels); inter-femoral head width (IFHW); interacetabular width (IAW); acetabular width (AW), acetabular depth (AD); femoral head diameter (FHD); femoral neck width (FNW); femoral neck length (FNAL); sacrococcygeal joint to pubic symphysis distance (SCJPD). foramen width ratio (ROFW). CONTACT For any further information: Mr Shankar Thiagarajah Academic Unit of Bone Metabolism, Department of Human Metabolism, University of Sheffield, Sheffield, United Kingdom s.thiagarajah@sheffield.ac.uk Finally obturator