Background: Soft tissue injuries (STIs) of lower extremities are considered as a very common complaint in those patients that were admitted to the emergency department. One of the main purposes in these patients' treatment strategies is early returning to work and regular activities. This study purpose was to compare the results of two lower limb (leg) splinting methods: standard-sized short leg splinting, and also half-sized short leg splinting.Methods: In this randomized controlled clinical trial research, we enrolled those patients with STI of the lower limb and without bone fracture. The setting was Haftom Tir trauma center and all patients signed the written consent before the study starting. We categorized participants into two groups: standard-sized short leg splint and halfsized short leg splint. The data were entered into SPSS ۱۸ software and also were analyzed using that. Results: ۳۰۰ patients were included in this study totally. The splinting complications were similar in two groups, but the splint fracture and skin burn frequency were significantly lower in half-sized short leg splint (p value <۰.۰۰۵). The mean score of pain and swelling frequency had no significant differences in both groups (P>۰.۰۰۵). Conclusions: The results indicated that the performance of standardsized and half-sized short leg splinting was similar in lower limbs STIs. The difficulties were less in half-sized short leg splint. Therefore, this study recommend that emergency physicians could consider half-sized short leg splinting in STIs, but the recommendation may be considered as valuable when this study results reassess in other clinical trials with multicenter researches and more sample size.Background: Soft tissue injuries (STIs) of lower extremities are considered as a very common complaint in those patients that were admitted to the emergency department. One of the main purposes in these patients' treatment strategies is early returning to work and regular activities. This study purpose was to compare the results of two lower limb (leg) splinting methods: standard-sized short leg splinting, and also half-sized short leg splinting. Methods: In this randomized controlled clinical trial research, we enrolled those patients with STI of the lower limb and without bone fracture. The setting was Haftom Tir trauma center and all patients signed the written consent before the study starting. We categorized participants into two groups: standard-sized short leg splint and halfsized short leg splint. The data were entered into SPSS ۱۸ software and also were analyzed using that. Results: ۳۰۰ patients were included in this study totally. The splinting complications were similar in two groups, but the splint fracture and skin burn frequency were significantly lower in half-sized short leg splint (p value <۰.۰۰۵). The mean score of pain and swelling frequency had no significant differences in both groups (P>۰.۰۰۵). Conclusions: The results indicated that the performance of standardsized and half-sized short leg splinting was similar in lower limbs STIs. The difficulties were less in half-sized short leg splint. Therefore, this study recommend that emergency physicians could consider half-sized short leg splinting in STIs, but the recommendation may be considered as valuable when this study results reassess in other clinical trials with multicenter researches and more sample size.