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[Effects of 5-fluorouracil on tendon adhesion formation after flexor tendon repair]

Author(s): Guo M, Zhang J, Tian D, Zhang Y, Peng X, Wang Z, Wu J, Duan Y, Dou Z, Wang C

Affiliation(s): Department of Orthopedics, the 260th Hospital of PLA, Shijiazhuang Hebei, 050041, PR China.

Publication date & source: 2008-07, Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi., 22(7):794-6.

Publication type: English Abstract; Randomized Controlled Trial

OBJECTIVE: To evaluate the effect of 5-fluorouracil (5-FU) applied topically on preventing adhesion and promoting functional recovery after tendon repair. METHODS: From August 2003 to June 2007, 48 patients with flexor tendon rupture of the fingers by sharp instrument were treated and randomly divided into two groups. In 5-FU group, 39 fingers of 26 patients included 17 males and 9 females, aged (29.3 +/- 9.8) years; the locations were zone I in 19 fingers and zone II in 20 fingers; single finger was involved in 12 cases and more than 2 fingers were involved in 14 cases; and the time from injury to operation was (2.4 +/- 1.6) hours. In control group, 36 fingers of 22 patients included 14 males and 8 females; aged (26.1 +/- 8.7) years; the locations were zone I in 16 fingers and zone II in 20 fingers; single finger was involved in 10 cases and more than 2 fingers were involved in 12 cases; and the time from injury to operation was (2.1 +/- 1.8) hours. No statistically significant difference was found in constituent ratio of age, gender, injured fingers and their zones, between two groups (P > 0.05). The repair site in 5-FU group was given 5-FU at a concentration of 25 mg/mL with a soaked sponge, and the synovial sheath of the repaired site was wrapped with the 5-FU-soaked sponge for 1 minute for 4 times after the tendons were repaired; normal saline was used in the control group. RESULTS: Wound healed by first intention and no infection and tendon rupture occurred in two groups. The patients were followed up for 3-8 months (mean 4.1 months) and 3-8 months (mean 3.9 months) in 5-FU group and in control group respectively. The functional recovery degrees of the fingers were evaluated with total active movement (TAM) evaluation system. In 5-FU group, the results were excellent in 22 fingers, good in 13 fingers, fair in 3 fingers and poor in 1 finger; the excellent and good rate was 89.7%. In control group, the results were excellent in 11 fingers, good in 15 fingers, fair in 9 fingers and poor in 1 finger; the excellent and good rate was 72.2%. There was statistically significant difference in the functional recovery degrees of fingers between two groups (P < 0.05). The 2 fingers which had a poor result in 5-FU group and control group were served with tenolysis was performed in 2 cases having poor results after 6 months of operation and had an excellent result at last. CONCLUSION: 5-FU applied topically can reduce tendon adhesions after the ruptured tendon repair.

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