TKA post-operative unstable joint correction trousers, comprising: steppable elastic trousers (1), calf fixing straps (2), thigh fixing straps (3), a waist fixing strap (4), elastic fastening straps (5) between the calf and foot, elastic fastening straps (6) between the calf and thigh, elastic fastening straps (7) between the thigh and waist, and knee pad reinforcing straps (8)； the steppable elastic trousers (1) serve as the base, the fixing straps (4, 5, 6) are connected to the trouser body by means of trouser loops (11-14), the ends of the fixing straps (2, 3, 4) are provided with sleeve rings (21, 31, 41) and nylon velcro (22, 32, 42, 81), and both ends can be fixed to form a sleeve； the two ends of the elastic fastening straps (5, 6, 7) are provided with nylon velcro (51, 52, 61, 62) and are connected between two fixing straps (2, 3, 4)； the tightness of the elastic fastening straps (5, 6, 7) can be adjusted by means of strap holes (24, 34, 43) on the fixing straps (2, 3, 4), changing the tension between the fixing straps (2, 3, 4), and maintaining the normal physiological clearance between the knee joint femur and tibia. The present invention can improve knee joint clearance and has a corrective effect on flexion instability and knee hyperextension when the knee joint is active； operation is simple, convenient, and practical.L'invention concerne un pantalon de rééducation pour articulation instable après une arthroplastie totale du genou, comprenant : un pantalon élastique évolutif (1), des sangles de fixation au mollet (2), des sangles de fixation à la cuisse (3), une sangle de fixation à la taille (4), des sangles d'attache élastiques (5) entre le mollet et le pied, des sangles d'attache élastiques (6) entre le mollet et la cuisse, des sangles d'attache élastiques (7) entre la cuisse et la taille et des sangles de renfort protège-genou (8). Le pantalon élastique évolutif (1) sert de base, les sangles de fixation (4, 5, 6) sont reliées au corps du pantalon au
