After all cases were healed, with Zhao Dong-sheng criterion evaluation, the percentage of successful outcomes was 91% in 2 HCS and 90% in 3 HCS.

• 按照赵东升[1]疗效评定标准评定：2枚空心钉组愈合后优良率91%25，3枚空心钉组愈合后优良率90%25。