Coloarticular fistulas extending to the hip joint are rare and serious pathologies causing morbidity and mortality due to sepsis. Herein, we present two cases with rarely seen coloarticular fistula complications following hip arthroplasty operations. One is with extracting gas from the cutaneous fistula after multiple revision total hip arthroplasty operations and one is after bipolar hip hemiarthroplasty with radiation therapy as a possible etiological factor. These reports emphasize that the drains must be followed for a possible color change and air uptake due to intestinal gas content after infected hip arthroplasty operations.