Background: High Tibial Osteotomy (HTO) is an approved surgical technique for varus knee deformity. For open wedge HTO multiple fixation methods and devices have been used. Advantages and disadvantages of these methods and devices are reported in various studies. Few studies have been conducted on use and final outcome of correction of varus knee deformity by implementation of non locking plates and benefits of this method is not fully evaluated.
Objectives: To assess clinical and radiographic features of non-locking 4.5 millimeter L-buttress plate and T-buttress plate, which is used in open wedge High Tibial Osteotomy (HTO), and to find out whether this device is efficient enough or not.
Methods: This cross-sectional study was conducted on 39 patients with tibial deformity recruited from a referral orthopedic hospital in Iran. Patients’ information, including their baseline characteristics, Range of Motion (ROM) of the knee, comorbidities, time of weight-bearing, union time in x-ray, graft type, and time of follow-up were reported at two stages: before and after the operation. Radiographic images were taken from their legs in both stages. Although different surgeons operated on the cases, they all used the same method. After the surgery, they were checked up in 2, 6, 12, and 24 weeks and a second alignment view was taken from the patients.
Results: Thirty-nine patients underwent surgery for the correction of genu varus deformity and the follow-up time was between 6-48 months. There was no case of non-union and the ROM was perfectly restored in all the patients.
Conclusion: Although the rate of the success in the use of the locking plate in HTO is higher, the use of a 4.5-mm non-locking plate seems to have decent results, too; therefore, it could be used as an alternative yet functional fixation tool in HTO.

Total joint arthroplasty (TJA) of the lower extremities is a successful surgical procedure for end-stage degeneration and is gaining increasing popularity worldwide. Preexisting neurological conditions have been a significant challenge for arthroplasty surgeons for a long time, and they have avoided performing TJA in these patients. Parkinson’s disease (PD), an age-related neurodegenerative disorder, is prevalent and associated with a higher likelihood of gait imbalance, falling, and osteoarthritis (OA). The number of patients with PD who experience hip and knee OA is increasing. As a result, some of these individuals may need to undergo total hip or knee arthroplasty (THA/TKA) to alleviate symptoms and improve their function. Patients with PD present a remarkable set of challenges for surgeons owing to increased muscle tone, higher fracture risk, and ligament instability. Currently, limited information is available regarding the outcomes and effectiveness of these procedures in PD patients. The lack of data is a concern because it prevents surgeons from making informed decisions regarding the use of TJA in this patient population. This study aims to summarize the recent literature regarding total hip arthroplasty (THA) and total knee arthroplasty (TKA) procedures in patients with PD to help surgeons in this challenging setting and improve their knowledge of potential complications and outcomes in this complex background.