Comparison of Anterior Cruciate Ligament Vascularization after Reconstruction with Hamstring Autograft in two Methods of Maintaining Distal Tibial Insertion with and Without Fixation with Absorbable Interference Screw, based on the Findings of Dynamic Contrast Enhanced MRI, a Double Blind Randomized Clinical Trial Study

Comparison of Anterior Cruciate Ligament Vascularization after Reconstruction with Hamstring Autograft in two Methods of Maintaining Distal Tibial Insertion with and Without Fixation with Absorbable Interference Screw, based on the Findings of Dynamic Contrast Enhanced MRI,...

Randomized clinical trial, with parallel, double-blind, randomized groups, on 40 patients. Excel software was used for randomization.

The present study will be performed in the form of a randomized clinical trial on patients diagnosed with isolated anterior cruciate ligament injury who is a candidate for surgery referred to Shafa Yahyaian Hospital. After the approval of this plan in the ethics committee of the medical school of Iran University of Medical Sciences, and registration in the clinical trial system of the country, written informed ...

Inclusion criteria: - Age over 18 years and under 50 years Patients with ACL tear that is both clinically and MRI-confirmed - Provide written consent to enter the study Criteria for not entering: ACL partial tear Deformity of varus or valgus ACL reconstruction with allograft Previous history of knee surgery History of sensitivity to contrast material Exclusion criteria: Failure to follow post-treatment protocols - Do not refer for follow-up

The first group in which the distal attachment of the tendons is maintained will be used for fixation by Absorbable Iinterference Screw, which will lead to compression to the wall of the bony canal created in the tibia. the second group :This is the same in the surgical method group, but Absorbable Interference Screw And it is in this way that it is sufficient only to maintain the tibial connection of the tendons.

Tibial canal widening, femoral canal widening, ACL diameter, Functional score Womac, tegnerlysholm

Randomization method in the present study: For random assignment of patients to study groups, each eligible patient is assigned a number in the order of inclusion in the study. Randomization unit: will be individual Layers of randomization: Using stratified randomization Patients are randomly placed in different groups and random blocks are used for balance in groups. The samples are classified according to the center of the class and then in each class with the help of software to generate a random sequence. Randomization tool: Random numbers according to the number of patients by Excel software The method of constructing a random sequence is selected one by one Explanation of allocation concealment: Patients do not know the type of surgery and the person performing the analysis does not know the type of intervention.

At the time of obtaining informed consent, patients are explained in an understandable language that they will undergo one or two surgeries in one of two ways. Then a list of random numbers according to the number of patients is prepared by Excel software. This list is then divided into two parts (groups 1 and 2). Each patient will be included in the relevant group according to the number assigned to him / her upon arrival and the envelope with the patient group written on it will be delivered to the relevant doctor. Thus, the patient will not be aware of the type of intervention performed, while the physician will be aware of the type of surgical treatment adopted (double-blind). Random patients are operated on in one of two ways. There is no difference between the two methods in terms of preoperative and postoperative programs. There is no difference between the two methods in terms of pre- and postoperative interventions and the rate of complications. There is no difference between patients in terms of the appearance of organs after surgery. There is no difference in preoperative and postoperative rehabilitation between the two groups. The surgeon is aware of the type of surgery, but in the postoperative period he treats the patients in the same way. The surgeon is aware of the type of surgery, but he treats the patients in the same way in both groups.

All variables and all potential data can be shared after identifying individuals

Access period starts 6 months after the results are published

It will be available to researchers working in academic institutions, and people in industry can apply for it.

The data can be reviewed and used to improve clinical conditions and maintain patient health and perform meta-analyzes.

They can request the author's email or from the research center or university.

Apply by email or post to Iran University of Medical Sciences or Shafa Yahyaian Bone and Joint Reconstruction Research Center.