DOS 2018

208 · DOS Abstracts Acute Achilles tendon rupture - The influence of gender and age on treatment outcome. A registry study from the Danish Achilles tendon Database. Allan Cramer, Nanna Cecilie Jacobsen, Maria Swennergren Hansen, Håkon Sandholdt, Per Hölmich, Kristoffer Weisskirchner Barfod Sports Orthopedic Research Center - Copenhagen (SORC-C), Arthroscopic Center, Department of Orthopedic Surgery, Copenhagen University Hospital, Amager-Hvidovre; Physical Medicine and Rehabilitation Research – Copenhagen (PMR-C), Department of Physiotherapy and Occupational Therapy, Copenhagen University Hospital, Amager-Hvidovre; Clinical Orthopedic Research Hvidovre (CORH), Copenhagen University Hospital, Amager-Hvidovre Background: Studies suggest that women have worse treatment outcome than men after acute Achilles tendon rupture (ATR). The combined influence of age and gender remains unexplored in the literature. Studies with large sample size including a sound number of women are needed to further investigate this. Purpose / Aim of Study: To investigate if gender and age affect patient re- ported and functional outcome following ATR. Materials and Methods: The study was performed as a registry study in the Danish Achilles tendon Database. The endpoints were the Achilles tendon Total Rupture Score (ATRS) at 4 months, 1 year and 2 years after injury, heel-rise height (HRH) and Achilles tendon resting angle (ATRA) at 4 months, and return to same type of work and sport at 1 and 2 years. Findings / Results: Data were collected from April 2012 to March 2018. 1524 patients participated at 4 months, 1277 at 1 year and 899 at 2 years. Women scored mean (CI) 4.8 (1.8;7.8) points lower in ATRS than men at 4 months (p<0.01), 9.9 (4.3;15.5) at 1 year (p<0.01) and 3.6 (-3.1;10.2) at 2 years (p=0.30). No statistically significant differences were found between gender in HRH and ATRA. Age showed a weak correlation to ATRS at 1 year (r=0.12), but not at 4 months and 2 years. Operated and non- operated patients showed no statistically significant differences in treatment outcomes. Conclusions: Women scored statistically significantly less than men in ATRS at 4 months and 1 year after ATR, but not after 2 years. The difference was less than half the clinically relevant difference at 4 months and peaked at 1 year where it equaled the clinically relevant difference. The functional outcomes did not reflect the difference at 4 months. Age did not seem to influence the out- come after ATR. 149.