Tehran University Medical Journal

Background: Recently, the surgical methods are used in patients with anterior cruciate ligament rupture and have been associated with successful results. There are different results in the term of using of the surgical methods for anterior cruciate ligament that often is associated with some complications such as infection, static laxity, remaining the pain, need to recurrence surgery, and limitation in the range of motion. Therefore, in this study, we aimed to compare outcomes of anterior cruciate ligament reconstruction with the fixed loop and the adjustable loop.
Methods: This cross-sectional study was done on 60 patients undergoing anterior cruciate ligament reconstruction referred to Kashani Hospital of Isfahan, Iran, from March 2017 to February 2019. Also, this study was approved in the Isfahan University of Medical Sciences, Isfahan, Iran. 30 patients were assigned to a fixed loop and 30 patients under the adjustable loop method. Postoperative outcomes were compared with the fixed loop group and the adjustable loop group.
Results: The frequency of static laxity below 8 mm in the fixed loop group was 83.3% and the frequency of static laxity below 8 mm in the adjustable loop was 76.7%. There was no significant difference between the fixed loop group and the adjustable loop group based on static laxity. Also, no infection was seen in the fixed loop group and the adjustable loop group. There was no significant difference between the fixed loop group and the adjustable loop group in terms of range of motion and knee score before and after surgery. After surgery, 96.7% of the fixed loop group and 86.7% of the adjustable loop group returned to normal activity. There was no significant difference between the fixed loop group and the adjustable loop group in terms of return to normal activity and satisfaction.
Conclusion: Using the fixed loop is effective, useful, and with low-complication for the patients with anterior cruciate ligament and also using the adjustable loop grafts is effective, useful, and with low-complication for the patients with the anterior cruciate ligament rupture.

Background: One of the most significant factors in the success of dental implant procedures, can be mentioned by the quality and quantity of jaw bone. The occurrence of some problems such as trauma, infection, pathological lesions and the long-term absence of teeth in patients, it causes irregularities in the jaw bone and can get bone resorption. Sever defects after trauma or tumor resection needs bone reconstruction. Sticky bone is a new biological agent that provides stabilization of bone graft in the defect, and therefore, ameliorates tissue repairing and decreases bone loss during healing period. In this study, the evaluation of sticky bone performance to reconstruction of defects in two patients jaw's bone was considered.
Case Presentation: Two patients (1 male, 1 female) with an average age of 50 years underwent surgery, due to the history of tooth extraction. They had resorption of jaw bone for implant surgery. The teeth were 11 and 37. This study was performed in Al-Mortaza's Clinic, Qom province, Iran, from May 2016 to January 2017. 10 ml of blood were taken individually and centrifuged at 1300 revolutions per minute (rpm) for 8 minutes to separate the platelet-rich fibrin. Then, platelet-rich fibrin was combined with allogeneic bone to form sticky bone. Sticky bone prepared during implant surgery, with implant inside the patient's jaw bone was used.
Conclusion: The use of sticky bone to stimulate and induce bone resorption in toothless area was associated with increased implant's success. Sticky bone due to multiple growth factors, such as TGF-β1 and VEGF, usability is an appropriate and efficiency method for stimulation of bone resorption.