What is proprioception? Most people, except for professionals, may be confused or have never even heard of the term. Proprioception is not like muscle strength and mobility or other athletic qualities that can be seen and felt. Whether the muscles are strong or not, and whether the joints can move or not, is immediately apparent. If there is a decline in function, it is also immediately known and experienced. Therefore, it is not easy to ignore, and it is the focus of rehabilitation exercises that the patients themselves can know. But what about proprioception? Joint proprioception is a special form of sensory perception that includes joint motion and position perception. It mainly includes static perception of joint position, dynamic perception of joint movement, and regulation of muscle contraction reflex and muscle tension. The static perception of joint position and the dynamic perception of joint motion mainly reflect the afferent activity of proprioception, while the muscle contraction reflex and the regulation of muscle tone reflect the activity of proprioceptive afferents. Studies have shown that the normal structure of muscles, tendons, ligaments, etc. around a joint is the material basis for the proprioceptive function of the joint. Therefore, when a joint is injured or operated on, the damage to the tissue inevitably leads to varying degrees of decreased proprioceptive sensation and decreased 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 reduce the visible muscle atrophy joint mobility, but also reduce the proprioception of the muscles, tendons, and ligaments surrounding 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 turning and stopping 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 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 the international level and the efforts of the majority 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 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 you practice it? The proprioceptive exercises such as kinesiology, balance training, sensory training, neuromuscular facilitation techniques, etc. are commonly used. Knee braces and elastic bandages used after an injury are also ways to strengthen proprioception and joint stability through external means. More specific methods will have to be introduced later in the functional rehabilitation exercises for different injuries, because each joint and limb has different movement patterns and dysfunctions after the injury, so we can only “analyze specific problems” and cannot compile a general “program It is impossible to compile a general “program”. This article is just to draw parents’ attention to the importance of “proprioception” during PT training, or at least to identify the medical level of the rehabilitator in charge of the child’s rehabilitation. If parents leave their child with a doctor who only knows how to do mechanical rehabilitation actions but not the inner mechanism, the child’s later development will be very worrying!