PURPOSE: To investigate the geometry of the clavicle and to assess the reliability of Picture Archiving Communication System (PACS) for its measurement. METHODS: One hundred pairs of dry clavicles from 78 males and 22 females were measured on radiographs using PACS. Measurements included all of the following parameters: length, width, medial and lateral angulation. The intraclass correlation coefficient (ICC) for the inter-observer and intra-observer reliability was calculated. RESULTS: The mean left clavicle length among males and females was 149.25 ± 9.64 and 133.30 ± 8.32 mm, respectively. The respective mean right clavicle length among the males and females was 147.77 ± 9.99 and 132.08 ± 6.92 mm. The clavicles from male cadavers were significantly longer, wider and thicker than those from females, on both the left and right (P < 0.05). Among both the male and female clavicles, the left side was significantly longer than the right (P < 0.05). There was good to excellent intra-observer reliability (ICC > 0.70) for all parameters. Inter-observer reliability was also found good to excellent for all parameters except for medial clavicular angulation; for which there was fair reliability (ICC = 0.697). CONCLUSION: The geometry of the clavicle is influenced by sex and side. Use of PACS as a measurement tool is reliable. Data from this study will be useful for pre-contouring plate or improving future designs of the anatomical plate of the clavicle.
PURPOSE: To investigate the geometry of the clavicle and to assess the reliability of Picture Archiving Communication System (PACS) for its measurement. METHODS: One hundred pairs of dry clavicles from 78 males and 22 females were measured on radiographs using PACS. Measurements included all of the following parameters: length, width, medial and lateral angulation. The intraclass correlation coefficient (ICC) for the inter-observer and intra-observer reliability was calculated. RESULTS: The mean left clavicle length among males and females was 149.25 ± 9.64 and 133.30 ± 8.32 mm, respectively. The respective mean right clavicle length among the males and females was 147.77 ± 9.99 and 132.08 ± 6.92 mm. The clavicles from male cadavers were significantly longer, wider and thicker than those from females, on both the left and right (P < 0.05). Among both the male and female clavicles, the left side was significantly longer than the right (P < 0.05). There was good to excellent intra-observer reliability (ICC > 0.70) for all parameters. Inter-observer reliability was also found good to excellent for all parameters except for medial clavicular angulation; for which there was fair reliability (ICC = 0.697). CONCLUSION: The geometry of the clavicle is influenced by sex and side. Use of PACS as a measurement tool is reliable. Data from this study will be useful for pre-contouring plate or improving future designs of the anatomical plate of the clavicle.
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