The effect of gender in hallux valgus surgery. A propensity score matched study.

BACKGROUND: Males and females who undergo hallux valgus (HV) surgery have different expectations.

METHODS: Data from 439 patients, with 26 males, were prospectively collected between 2007-2015. Propensity score matching (PSM) of one male to two females was performed using logistic regression of six variables to minimize selection bias. Hallux visual analogue scale (VAS) scores, AOFAS scores, SF-36, satisfaction and expectation scores were analysed at two years.

RESULTS: There were no significant differences in patient demographics after PSM. At two years, males and females attained similar VAS and AOFAS scores but males had significantly lower SF-36 general health score (males 68.7, females 79.3). 26.9% of males and 21.2% of females were not satisfied after surgery. Higher proportion of males did not have their expectations fulfilled (males 19.2%, females 5.8%) although this was not statistically significant.

CONCLUSIONS: Both genders attain similar outcome at two years. There is a trend towards lower expectation fulfilment in males after surgery.