To explore the application value of continuous passive motion (CPM) machine combined with traditional Chinese medicine fumigation and washing in patients with knee stiffness after lower extremity fractures.

A total of 80 patients with knee stiffness after lower extremity fractures admitted to the Department of Orthopedics of Yangzhou Hospital of Traditional Chinese Medicine from January 2022 to March 2023 were selected and divided into the control group (40 cases, treated with traditional Chinese medicine fumigation and washing) and the observation group (40 cases, treated with traditional Chinese medicine fumigation and washing combined with CPM machine). The clinical efficacy, knee joint range of motion, pain degree, bone marker levels, and knee joint function of the two groups were compared.

The total effective rate of the observation group was higher than that of the control group, and the difference was statistically significant (P<0.05). After treatment, the knee joint flexion and extension degree and knee joint flexion degree of the observation group were higher than those before treatment in the same group and those of the control group at the same time, and the VAS was lower than that before treatment in the same group and that of the control group at the same time, and the differences were statistically significant (P<0.05). After treatment, the NTx level of the observation group was lower than that before treatment in the same group and that of the control group at the same time, and the BGP was higher than that before treatment in the same group and that of the control group at the same time, and the differences were statistically significant (P<0.05). After treatment, the scores of each item in the HSS scale of the observation group were higher than those before treatment in the same group and those of the control group at the same time, and the differences were statistically significant (P<0.05).

The application of CPM machine combined with traditional Chinese medicine fumigation and washing in the rehabilitation treatment of patients with knee stiffness after lower extremity fractures has a significant effect, which can effectively improve the range of motion of the knee joint, relieve pain, improve bone marker levels, and promote the recovery of knee joint function.