• Jong Seop Kim, Byung Hyun Ahn, Yoo-Sun Won, Woo Kyoung Kwak, Tae-Hong Min, and Cheungsoo Ha.
• Department of Orthopedic Surgery, Armed Forces Daejeon Hospital, Daejeon, 34059, Korea.
• Mil Med. 2025 Jan 11.

IntroductionThis study aims to analyze the characteristics of hip region stress fractures (HSFs) within a South Korean military cohort and identify the associated risk factors to provide insights for treatment and prevention strategies. Additionally, we will report the epidemiologic data and clinical outcomes of treating HSF within the second largest military hospital.Materials And MethodsBetween January 2022 and December 2023, this retrospective case series revised all HSF patients' medical records to analyze demographic and epidemiologic data and clinical progress. The incidence rate was calculated using the number of conscripted soldiers based on publicly open available statistics from government institution.ResultsA total of 95 hips from 60 patients were included in this study, and 35 patients (58.3%) exhibited bilaterality. The seasonal variation of HSF patients showed a bimodal distribution, with peaks from April to June and October to December. The incidence rate per 100,000 person-years is estimated to be between 55.3 in 2022 and 67.9 in 2023.ConclusionsHip region stress fractures can also be termed as "private's fractures," which accurately describe their nature. It is crucial to identify cases that necessitate early diagnosis and surgical intervention. Epidemiologically, HSF demonstrates high bilaterality and a bimodal distribution throughout the year. During this period, unit commanders and military doctors should be cautious of HSF among soldiers and conduct appropriate screenings.© The Association of Military Surgeons of the United States 2025. All rights reserved. For commercial re-use, please contact reprints@oup.com for reprints and translation rights for reprints. All other permissions can be obtained through our RightsLink service via the Permissions link on the article page on our site–for further information please contact journals.permissions@oup.com.

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