為了去瞭解交通事故所造成急性膝關節血腫的特徵，我們設計了一個前膽
性的研究，在十二個月內對四十六個（年齡從十四歲到七十四歲）因交通
事故造成四十七個急性膝關節血腫的病人，實施關節鏡檢查。發現前十字
韌帶（Anterior Cruciate Ligament，ACL）斷裂的占51.1%（四十七個中
占二十四個），外側半月板破裂的占40.4%（四十七個中占十九個）；而
十八個後十字韌帶斷裂的膝關節中，有七例合併著外側半月板後節的損傷
。所以，交通事故似乎比運動傷害有較高的後十字韌帶及外側半月板損傷
，這也許是由於高能量和多方向性的受傷以及外側半月板後節的解剖構造
所造成的差異。
The objective of this study is to show the characteristics of
acute traumatichaemarthrosis of the knee due to traffic
accidents. A prospective study was undertaken of 47 knees in
road traffic accident victims (14 to 74 years old), who
presented with an acute haemarthrosis of the knee over 12
months. Anteriorcruciate ligament (ACL) tears occurred in 51.1
per cent (24 of 47). Lateral meniscus injuries occurred in
40.4 per cent (19 of 47). There were seven injuries of the
posterior segment of lateral meniscus associated with 18 PCL
tears. Road traffic accident victims had a higher incidence of
PCL and lateral meniscus injuries than did a series of athletes
with injuries. Higher-energy andmulti-directional injury and the
anatomy of the posterior horn of the lateralmeniscus might
account for a major part of the discrepancy.
