Joint Diseases and Related Surgery (JDRS), the official journal of the Turkish Joint Diseases Foundation, is an international, peer-reviewed, immediate open access journal. All published articles in JDRS has been free for everyone, without embargo, since 1990.

Joint Diseases and Related Surgery (JDRS), the official journal of the Turkish Joint Diseases Foundation, is an international, peer-reviewed, immediate open access journal. All published articles in JDRS has been free for everyone, without embargo, since 1990.

Introduction: The purpose of this study was to demonstrate that patients undergoing ACL reconstruction with quadrupled semitendinosus suspensory femoral and tibial fixation have comparable results in muscle strength and knee function to those undergoing ACL reconstruction with four-strand semitendinosus-gracilis suspensory femoral fixation and a bioabsorbable tibial interference screw fixation. Materials and Methods: Between 2017 and 2019, 64 patients who were operated on by the same surgeon were included. Patients underwent ACL reconstruction technique with quadrupled semitendinosus suspensory femoral and tibial button fixation in Group 1, and patients underwent ACL reconstruction with coupled four-strand semitendinosus-gracilis suspensory femoral fixation and a bioabsorbable tibial interference screw in Group 2. Evaluation of patients was performed with the Lysholm and Tegner activity scale preoperatively and at the 1st and 6th months postoperatively. At the 6-month visit, isokinetic testing of the operated and non-operated limbs was performed in both groups. Results: There was no significant difference in the age, weight, and BMI values of the patients in Groups 1 and 2 (p < 0.05). According to the strength values of the operated sides of the patients in Group 1 and Group 2, there was no significant difference in the angular velocities of 60° s⁻¹, 180° s^−1, and 240° s⁻¹ in both extension and flexion phases between the operated sides of Groups 1 and 2 (p < 0.05). Conclusions: Patients who have ACL reconstruction with quadrupled semitendinosus suspensory femoral and tibial fixation have comparable muscle strength and knee function to those who undergo ACL reconstruction with four-strand semitendinosus-gracilis suspensory femoral fixation and a bioabsorbable tibial interference screw.

Purpose: This study aimed to compare the radiological, macroscopic, biomechanical and histological outcomes of osteochondral autograft transplantation (OAT) and a combination of intralesional scaffold with intra‐articular losartan injection in a rabbit model of osteochondral injury. Methods: Twelve rabbits received bilateral osteochondral defects (4 × 4 mm) in the trochlear region of both knees and were divided into two groups. Group A received scaffold implantation with intra‐articular losartan (1 mg per knee, injected in 0.1 mL of solution), while Group B underwent OAT with re‐implantation of the original plug. After 6 months, bilateral knee magnetic resonance imaging (MRI), macroscopic, histological and biomechanical assessments were performed. Results: Macroscopic examination demonstrated that the defect areas were filled and integrated with the surrounding cartilage. MRI evaluations revealed complete closure of the osteochondral defects. Histological evaluation using Wakitani scores showed no statistically significant difference between the groups (Group A: 3.63 ± 2.13, Group B: 2.63 ± 2.01, p = 0.423). Finally, no significant difference was observed in biomechanical load testing between the groups (Group A: 219.2 ± 72.9 N, Group B: 270.8 ± 67.6 N, p = 0.149). Conclusions: The scaffold‐losartan combination may offer a promising, less invasive alternative to traditional OAT for osteochondral defect repair. Level of Evidence: N/A.

Aim. The purpose of this study was to design a sensor that could monitor the skin‐cast contact surface pressure (SCCSP) of a limb under a cast and inform the user via a mobile application when the pressure increases. Methods. In this experimental study, an infant sphygmomanometer cuff was initially placed on the forearm of 10 volunteers. A pressure sensor with a Bluetooth chip was then placed on the volar aspect of the forearm. Short arm plaster was applied with synthetic cast material. The SCCSP under the plaster was measured by the sensor and the measured values were transmitted to a mobile application via a Bluetooth chip. The mobile application processed the data from the chip and converted it to mmHg. Results. Intracompartmental pressure (ICP) values were categorized as 0, 10, 20, 30, 40, 50, 60, and 75 mmHg. The highest SCCSP was 75 mmHg CP, while the lowest was 0 mmHg CP. The correlation coefficient of the mean pressure values was 0.993 (p ≤ 0.001) (SD 0.002, range 0.989–0.997), and there was a significant relationship between ICP and SCCSP values (p ≤ 0.05). Conclusion. We can monitor SCCSP, detect limb swelling, and notify the user via a mobile application by using Bluetooth pressure sensors.