Objective To investigate the effect of self-made sickle-shaped small needle knife minimally invasive treatment on degree of pain and total cure rate in patients with stenosing tenosynovitis of flexor tendon of finger.

Methods A total of 100 patients with stenosing tenosynovitis of flexor tendon of finger were selected and randomly divided into control group and observation group, with 50 cases in each group. The control group was treated with open surgery, while the observation group was treated with self-made sickle-shaped small needle knife minimally invasive treatment. The surgical indicators, degree of pain, inflammatory factors, incidence of complications, and total cure rate were compared between the two groups.

Results The improvement of surgical indicators in the observation group was better than that in the control group; the score of the Visual Analogue Scale (VAS) in both groups after surgery were lower than those before surgery, and the VAS scores of the observation group were lower than those of the control group at the time points of immediately after surgery, 7 days after surgery, and 6 months after surgery; the serum interleukin-6 (IL-6), hypersensitive C-reactive protein (hs-CRP), and tumor necrosis factor-α (TNF-α) in both groups decreased after surgery, and these indexes in the observation group were lower than the control group; the incidence of complications in the observation group was lower than that in the control group, and the total cure rate was higher than that in the control group; all the differences of indexes mentioned above were statistically significant (P < 0.05).

Conclusion Self-made sickle-shaped small needle knife minimally invasive treatment shows a higher total cure rate in treating patients with stenosing tenosynovitis of flexor tendon of finger, which can alleviate the degree of pain and inflammatory response, reduce the incidence of complications, and accelerate postoperative recovery.