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鄉民真是臥虎藏龍 有人從美國運動醫學期刊 (American Journal of Sports Medicine)
上面轉貼了一篇關於 microfracture 手術的論文
原文很長而且很學術 有興趣可以點進去看
簡介：此篇論文發表於 5/23/2006，主題是追蹤 32 名動過 microfracture 手術的運動
員，年齡分佈是 16 至 54 歲，都在動完手術追蹤了至少兩年。
以下來貼另一個鄉民做的摘要 以及我的翻譯：
1-Lesion location did not affect outcome, as good and excellent outcomes were
similar for lesions located on the medial femoral condyle (65%), lateral
femoral condyle (71%), and trochlea (62%).
傷口的位置不影響復原的結果，傷口在三種不同位置（專業名詞就略過吧@@）復原的機率
都差不多。
2 The preoperative duration of symptoms was found to be an important factor
for cartilage repair with microfracture in our study. Our data indicate that
the longer the interval between injury and microfracture, the lower the rate
of return to high-impact athletics. In our study, the successful return rate
increased from 44% to 67% if microfracture was performed within 1 year after
articular cartilage injury.
症狀開始出現到動手術這段時間的長短很重要。拖得越久，手術後重新回到場上的機率
就越低。研究顯示如果在症狀出現一年內就動手術的話，成功復出的比率就從 44% 提昇
到 67%。
Oden: 症狀出現一個月就動了手術。
3 Athletes returning to high-impact sports after microfracture were younger
than were athletes who failed to return to their demanding sport. Younger age
has been previously associated with better functional outcome after
microfracture.
越年輕動刀，成功復出的比率就越高。
Oden: 19歲
4 Athletes with no prior surgical intervention had a better rate of return to
high-impact athletics than did those who had undergone knee surgery before
microfracture.
動 microfracture 的膝蓋之前如果沒有動過別的手術，復出的機率就越高。
Oden:第一次動膝蓋手術。
5 The mean lesion size in athletes who failed to return was larger than that
of patients who were able to return, but this difference was not
statistically significant (P = .176) (Table 2). However, we found that
athletes with lesion size 200 mm2 had a significantly higher return rate
(64%) to high-impact sports than did athletes with lesions >200 mm2 (22%, P =
.04).
傷口面積越小，復出的比率越高。200 平方公釐是個門檻，如果傷口小於這個大小則成功
復出的比率會高很多（64% vs. 22%）
Oden: 據 Pritchard 說他的傷口很小，大概只有指甲大小，雖然沒有精確的數字，不過
估計大約是一公分見方，也就是 100 平方公釐吧
這五項要素 Oden 統統都具備。但是下面這段話又有點不太樂觀：
Although significant increases in functional outcome scores were observed in
patients returning to high-impact athletics, functional increases were lower
in patients who failed to return to the sport (Figures 1 and 2). After an
initial increase, a decline of the activity scores was observed in 15
athletes (47%). Age, duration of symptoms, or lesion size or type did not
affect the incidence of decreasing functional scores.
成功復出的運動員在各項膝蓋功能測試的結果，跟手術前相比都有顯著的進步，未能成功
復出的運動員進步的幅度則沒有那麼大。（這應該是當然的吧，重點在下句話）有 47%
的運動員雖然手術後一開始有進步，但是之後膝蓋功能又退步了，這個現象跟年齡、拖了
多久才動手術或是傷口大小都沒有關係。
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