Introduction: Slipped capital femoral epiphysis (SCFE) is a disease that occurs as a result of the posterior and inferior displacement of the femur head. SCFE is the most common hip pathology in adolescence. It is classified as stable and unstable SCFE according to the loadability of the affected leg. The widely accepted method for stable SCFE treatment is in situ pinning. In situ pinning is an effective method for relieving pain in the early period and preventing the progression of slippage. On the other hand, because of the non-anatomic reduction of physis, it is expected in middle and long-term osteo-arthritis. Our aim in this study is to report the long-term functional outcomes of patients with SCFE who were treated with in situ fixation at a trauma center.