Objective: To create awareness of the possibility of this uncommon cause of infertility among caregivers and Teachers in Gynecology and Ultrasonography and to also emphasize the need for proper evaluation of patients with secondary infertility. Clinical Presentation and Intervention: 37-year old P 0+1 with 7 years secondary infertility and history of induced mid-trimester abortion 20 years previously. Vaginal ultrasound scan and saline infusion sonohysterography suggested retained foetal bones, which were confirmed by histology. Retained foetal bones acting like an intrauterine contraceptive device, may cause secondary infertility. Conclusion: Prolonged retained foetal bones in a case of secondary infertility. When there is a history of mid-trimester abortion, the possibility of retained foetal bones should be borne in mind.