Negative heel shoes are professional orthopedic rehabilitation shoes, which are serious scientific innovation products based on three national invention patents and a number of academic papers on human mechanics. They are by no means simple. Different from fashion products, the design is based on human mechanical structure.

Professional products are divided into three categories, K-type for low back pain rehabilitation rather than walking backwards, P-type for flat foot rehabilitation and C-type for postpartum physical recovery. Different types have different structures and functions, and professionals should be consulted before purchasing to avoid wrong selection and adverse effects. In the process of rehabilitation, if you have any questions, you should consult professionals in time and get rehabilitation guidance, which is necessary for all professional rehabilitation supplies.

Negative heel shoes are the scientific research achievements of the Institute of Human Mechanics, and many related academic papers have been published. Related disciplines involved: foot surgery, non-surgical orthopedics, gait analysis, rehabilitation medicine, (dance) body training, sports biomechanics, footprinting. It is one of the hot research directions of human mechanics, orthopedics and gait analysis. There are many papers and patents, and the products are quite common abroad.

Heel shoes belong to orthopedic shoes. As a functional shoe for rehabilitation, the outside of the sole must be moderately raised to reduce the pressure on the outside and avoid injury. It can't be slippers, and the heel thickness can't exceed 15 mm, otherwise it's useless and unsafe.

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The backward inclination angle of negative heel shoes is 2 to 7 degrees. Adult's plantar height is about 20 mm, if the backward inclination is small, the correction effect will be very small, and if the backward inclination is large, it will be difficult to control, which will lead to abnormal walking posture (gait), new bad posture and increased correction difficulty. Some people think that increasing the backward angle correction will be stronger and the effect will be better, but this is natural for laymen. The key factor of correction is time, and the final evaluation result is still the time that can be maintained. Long-term low intensity is the basic principle of correction and rehabilitation. Excessive intensity will cause unnecessary tension, which not only has no corrective effect, but also easily leads to other bad postures, which is counterproductive. At the same time, the height transition of the sole of negative heel shoes should be continuous and gentle, from the forefoot to the heel, the sole of the foot should not be suspended, otherwise it will also lead to improper tension, affect the effect, and may also form new bad posture.

Second, there should be an inward inclination angle, that is, the sole should be slightly inclined inward from the outside, and the outside is about two millimeters higher than the inside. Because people's heel bone is round, it is easy to cause the center of gravity to shift to the outside after moving to the heel. You can see that the wear on the outside of the sole is always more serious than that on the inside, and negative heel shoes will aggravate this trend. If you don't lean inward, on the one hand, the correction effect will be greatly reduced, and more seriously, it is easy to sprain your ankle. (Note: Flat-footed negative heel shoes need special treatment)

Third, the sole material must ensure proper hardness. Soft materials have insufficient hardness and are easily deformed under pressure. Hardness is closely related to correction strength. Without hardness, there is no correction function. Too hard materials, such as wood, plastic, metal, etc., can't make the soles bend (not bend), it is difficult to walk normally, and the gait is abnormal, which has no corrective effect. High-quality rubber has moderate hardness, is not easy to deform and is wear-resistant.