Three stages of treatment for chondromalacia patellae: Stage 1: For patients with chondromalacia patellae, the first step is to find out if there is fluid in the knee joint. If there is fluid in the knee joint, it should first undergo a three-week effusion elimination treatment with physical therapy and medications such as diclofenac. Note that during the three-week effusion elimination treatment, it is important to reduce activity. If activity is not reduced enough, the effusion may not subside satisfactorily after three weeks by simply taking oral medications such as fotarolimus. If there is no effusion in the joint you can proceed directly to the second phase of medication below. Phase II: This phase of treatment is not started until the effusion has been effectively eliminated after three weeks, i.e., five weeks of oral glucosamine sulfate medication, and intra-articular injections of sodium hyaluronate, one injection per week, may be given for a total of five weeks. This is generally known by the local orthopedic surgeon. However, if the intra-articular fluid does not subside, it can affect the effectiveness of both medications. Phase 3: After the five weeks of glucosamine sulfate and sodium hyaluronate in the second phase, then follow the method on my website to perform squatting horse stance exercises and quadriceps medial head exercises to thicken the thighs, which will not only restore past activities but also reduce future recurrences. Specific exercises are as follows: 1, squatting horse stance: the purpose is to practice the strength of most muscle groups of the quadriceps. The posture is the same as in Chinese martial arts, horse riding squatting crotch action or called standing pile action, squatting horse stance. The patient’s legs apart, the distance between the two feet is slightly wider than the shoulders, the body remains upright position, can not lean forward, then the knees began to bend squat. The bending angle of both knees varies according to the patient’s physical condition and muscle strength. If the patient’s physical condition is good, good thigh muscle strength, squatting angle can reach 90 ° flexion, if the patient is weak, thigh muscle strength is weak, both knees can be lightly flexed, this time the half squat position is higher, the patient more effort, can be later with the exercise, thigh muscle strength increases, and then increase the angle of the knee flexion. Each patient will have a painful angle when squatting, some squatting to 30° pain, some squatting to 60°, or 40° pain. It is best to avoid the painful angle when practicing static squats. If squatting to 30° hurts, you can continue squatting down to 60° to avoid the 30° painful angle, and vice versa. The duration of a squat varies greatly from person to person, all squatting until they can’t hold on. Rest a minute between squats, do not rest too long. Then practice the second squat, and so on, for 30 minutes for the day’s squat exercise. Depending on your physical condition, decide how many times you want to practice. Practice 1-3 times a day. But the total time of a squat for people who have just started practicing can start from 5 minutes, and then gradually extend, to avoid a swelling of the knee practice. 2, quadriceps medial head exercise: knee joint in any position between 0 ~ 20 ° stationary, ankle hanging weights resistance exercise: the purpose is to practice in the squatting horse stance exercise is not easy to practice the quadriceps medial head (that is, the quadriceps most medial part of the muscle). The method is to sit on the edge of the bed, the knee joint is first completely taut, at this time the knee joint is at 0 °, and then slowly flex the knee, make it to flexion 20 °, and then slowly straighten to 0 °, which is the concept of 0 ° ~ 20 °. Repeat this several times to find a painless angle between 0° and 20°, staying still and resisting the weight hanging at the ankle joint. The weight hanging at the ankle joint is good to be able to hold in that position for 5 minutes. If it is too light and the activity is not felt for 10 minutes, or if it is too heavy and cannot be held for 1 minute, it does not make the practice satisfactory. 3, if the above two exercises in any of the angles have pain, each find an angle of the least pain practice can be. Because it is a static exercise, even if there is a little pain, the wear and tear on the joints is negligible. 4, assessment method: if your knee joint in bending the knee about 80 ° squatting horse stance duration can last 20 minutes in one breath, it means that your muscle strength is enough. 20 minutes of the standard from my teacher in the sports team to figure out, try not to casually lower the requirements. Otherwise the muscle strength is not enough to achieve the rehabilitation effect.