Medial Tibial Stress Syndrome during Police Academy Training: A Case Report and Occupational Medicine Review

Abstract

Background: Medial tibial stress syndrome (MTSS), commonly referred to as shin splints, is one of the most frequent lower-extremity overuse injuries encountered among runners, military personnel, and law enforcement recruits [1,2]. Police academy training environments create a unique occupational risk because recruits are frequently exposed to abrupt increases in running volume, sprinting, jumping, obstacle courses, defensive tactics, formation marching, and load-bearing activities over a relatively short period.
MTSS is increasingly recognised as part of a continuum of bone stress injury rather than an isolated inflammatory process. Early identification is essential because progression may result in tibial stress fracture, prolonged training restrictions, delayed academy completion, and increased occupational attrition.
Case: A healthy 24-year-old female police academy recruit developed progressive bilateral shin pain during the third week of academy training following a substantial increase in physical training volume.
Before academy enrollment, the recruit participated in limited recreational running (approximately ½–2 miles per week). During academy training, running volume increased to approximately 18–22 miles per week within three weeks, accompanied by daily callisthenics, sprint drills, agility training, defensive tactics, and obstacle course activities.
Physical examination demonstrated diffuse tenderness along the posteromedial borders of both tibias extending greater than 5 cm, consistent with medial tibial stress syndrome. There was no evidence of tibial stress fracture, chronic exertional compartment syndrome, neurologic deficit, or vascular compromise.
MRI demonstrated periosteal oedema and bone marrow oedema without a cortical fracture line.
Treatment included temporary impact modification, physical therapy, footwear assessment, and a structured return-to-running program. The recruit returned to unrestricted academy participation after seven weeks and completed training without recurrence at six-month follow-up.
Conclusion: Early recognition of MTSS allows occupational medicine providers to balance injury management with preservation of academy participation. Diagnosis requires differentiation from more serious causes of exertional leg pain, particularly tibial stress fracture and chronic exertional compartment syndrome. Evidence supports conservative treatment emphasising relative rest, progressive loading, rehabilitation, biomechanical correction, and functional return-to-duty assessment.