IRCT20190429043413N2 IRCT 2023-08-29 directorate of Health, Rescue and Treatment of Police Headquarter of Islamic Republic of Iran platelet-rich plasma (PRP) in mandibular condyle fractures PRP Assessing of the use of platelet-rich plasma (PRP) in improving function and healing in the treatment of mandibular condyle fractures by the closed reduction In traumatized patients 2023-07-08 anticipated 64 Complete https://irct.ir/trial/72240 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Supportive, Randomization description: in this study, random allocation software was used for simple randomization. after allocation in 2 groups with 32 persons, concealed in sequentially numbered, sealed, opaque envelopes, Blinding description: Participants , after choose of one sealed envelopes, place on one of groups and because of doing procedure under general anesthesia, they don't have any information about PRP injection into the fracture site. Also, evaluators don't know what is the group of any patient and PRP injection. Data analyzer analysis data without any information about groups. 3 mandibular condyle fracture. Intervention 1: Intervention group: in this group, PRP is injected into the fracture area. Patients in intervention group, underwent arch bar insertion under general anesthesia. then, 10cc venal blood is taken and PRP is extracted. About 2 cc of PRP is injected into the fracture area( palpitation of joint for detect the injection position). for 2-4 weeks, patients have MMF. Intervention 2: Control group: no intervention, just usual fracture treatment. Under general anesthesia, arch bar is inserted and then for 2-4 weeks patients have MMF. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is no more information