Upper Extremity Motor Dysfunction

The goal of this clinical trial is to learn whether the ZEPU-2000A, ZEPU-2000D and ZEPU-2000E robotic rehabilitation trainers help people with weakness or movement problems in their arms and legs. These devices are used to guide repeated arm and leg movements as part of rehabilitation therapy. The study will also look at whether the devices are safe to use. The main questions it aims to answer are: Is training with the ZEPU-2000 devices safe, and how well do patients tolerate and stick with the training sessions? Does adding robotic training to usual rehabilitation improve muscle strength, joint movement, balance, walking, and daily function more than usual rehabilitation alone? Researchers will compare a group receiving robotic-assisted rehabilitation plus usual care to a group receiving usual rehabilitation care alone, to see whether the robotic devices provide added benefit. Participants will: Be adults aged 18-60 with arm and/or leg movement problems caused by stroke, incomplete spinal cord injury, traumatic brain injury, or an orthopedic condition Attend training sessions 3 times a week for 12 weeks (about 36 sessions total), each lasting approximately 45 minutes Undergo assessments of strength, movement, balance, and daily function at the start of the study and every 2 weeks throughout the 12-week period Be monitored for any side effects or safety concerns, such as skin irritation, falls, or discomfort, at every session