Intrameniscal ossicles are rare lesions in humans. They are usually located in the posterior horn of the medial meniscus and are frequently misdiagnosed on roentgenogram as intraarticular loose body. We report a case of meniscal ossicle that occured in a 58-year-old male who had diffuse pain and intermittent locking sensation in the knee. We successfully treated the case with arthroscopic resection of the intrameniscal ossicle and partial meniscectomy of the surrounding meniscus. There was no recurrence of symptom during more than six months after operation.