What is proprioception? The vast majority of people, except for professionals, may be confused or have never even heard of the term. These two paragraphs above are the definition of proprioception and what it entails. I believe that most people can’t know exactly what they are talking about even after reading them two or three times. This is what is known as “a mountain of a molehill”, because without the relevant knowledge as a foundation, it is impossible to understand the definition clearly, and it is not very clear even after reading it. If I were to look at the circuit diagram and operating principle of an electrical appliance, I would have the same effect, as they are all Chinese characters, but I just can’t understand them. Therefore, when practicing rehabilitation functions, it is often necessary to “not seek to understand much”. That is, you don’t have to know what the computer does and how it works, as long as you can operate it basically and can use it. The principle and design of functional rehabilitation exercises should be left to specialized rehabilitation doctors and rehabilitation therapists, and patients only need to know the general function of the exercises, know the requirements and points of the exercises, and practice them carefully. If you really want to understand the theory before practicing, the function of your arms and legs will all be delayed! Research shows that the muscles, tendons, ligaments and other structures around the joints are normal and are the material basis for the proprioceptive function of the joints. Therefore, when a joint injury occurs, or surgery, etc., due to damage to the tissue, it will inevitably lead to different degrees of decline and loss of joint proprioception, as well as the weakening of neuromuscular control. At the same time, after surgery for sports system injuries, a certain degree of limb braking is necessary to protect the tissues and allow them to heal and grow, such as wearing a cast, splint, brace, etc. These brakes not only allow us to see a decrease in muscle atrophy joint mobility (written specifically in “Why Muscles Atrophy” and “Why Joints Stick”), but also reduce the proprioception of the muscles, tendons and ligaments around the joint due to reduced or even stopped activity, causing these receptors to lose the ability to control the movement of the limb. This causes instability of the joints, decreased control of joint movement, adjustment of body posture during movement and decreased balance. The entire motor function of the body is then reduced! It is important to note that the decrease in proprioception is not like muscle atrophy and joint adhesions, which limb is injured and which limb has problems. Because proprioception includes the afferent and integrative modulation of proprioceptive functions by the nervous system, the decline in proprioception is systemic, even if only one leg is injured resulting in reduced activity! That is, the proprioception of the uninjured arm and leg also decreases! After an injury or surgery, it usually takes several months for the muscle strength and joint mobility of the limb to largely recover, so proprioception decreases for several months at the same time. The phenomenon is that although muscle strength is restored, complex and difficult motor movements such as jumping, for example, still do not return to normal levels. In particular, due to the lack of balance, coordination and adaptability of the movement, such as acceleration, deceleration, sharp turn and stop, and other movements that require agility and reaction speed, the level is significantly worse. Therefore, while restoring muscle strength and joint mobility, restoring proprioceptive and neuromuscular control is an important part of restoring motor function. The motor function mentioned here can not only refer to running, jumping, playing ball, fast steps up and down the stairs, run a few steps to chase the bus, step on something slippery quickly adjust body movements without falling …… and so on these are the motor function of the human body, are the motor ability necessary for daily life. Do not think that you are not an athlete, not on the field of play can muscle mobility proprioception are not well practiced. The consequence is certainly not to be an athlete, but also not enough ability to do ordinary people, to complete the necessary activities of life! Rehabilitation functional exercises, muscle strength exercises can make a part of the proprioception recovery, but this is far from enough. Full restoration of proprioception and neuromuscular control is a matter of special training to gradually restore it. Unfortunately, a few years ago in China proprioceptive exercises were usually neglected, and people only paid attention to the visible muscles and joint mobility training, but ignored the invisible ones! So many people although the surface recovery is good, there is strength angle is also enough, but the motor function is always not, complex and fast or difficult some of the movements, after half a year are not recovered. The good thing is that in the past one or two years, the proprioceptive rehabilitation training is getting more and more attention! This is also the result of the efforts to catch up with international standards and the efforts of rehabilitation workers:) In the rehabilitation of sports system injuries and post-surgery treatment and rehabilitation exercises, not only should we systematically restore joint mobility and muscle strength, but also systematically practice and strengthen this “often neglected” proprioceptive exercise. This is because proprioceptive exercises are very important for limb and body function. This is because proprioception is essential for the further recovery of limb and joint function, and for avoiding re-injury during sports! Since proprioception is so important, how do we practice it? For proprioceptive exercises, such as kinesiology, balance training, biofeedback (an exercise performed with the help of sophisticated electronic equipment), neuromuscular facilitation techniques (PNF), etc. are common methods. The use of knee braces and elastic bandages after an injury are also ways to enhance proprioception and joint stability through external means. More specific methods can only be described later in the introduction of functional exercises for rehabilitation of different injuries, because each joint and limb has different movement patterns and dysfunction after injury, so we can only “analyze specific problems” and cannot compile a general “program It is not possible to compile a general “program”. This article is a start to emphasize the importance of proprioception and related rehabilitation training. The details will be explained at ……