Division of Plastic, Reconstructive, Oral and Maxillofacial Surgery, Duke University Medical Center, Durham, NC 27710, USA.
Int J Oral Maxillofac Surg. 2010 Jan;39(1):57-60. doi: 10.1016/j.ijom.2009.11.016. Epub 2009 Dec 22.
This study investigated whether a relationship exists between the length of the canthal-tragus line and the distance from the tragus at which the puncture point for arthroscope insertion should be made. On one side of 11 cadaver heads, a puncture point was marked 7 mm from the midtragus and 2 mm below the canthal-tragus line. On the other side, the distances were 10 mm and 2 mm, respectively. The arthroscope trocar and cannula were inserted at the marked points. The anatomical location of the arthroscope after insertion was confirmed by open dissection with the arthroscope in place. Following dissection, the canthal-tragus line was measured on each side of the cadaver's head. For measurements > 70 mm, puncture points 10 mm from the midtragus led to insertion of the arthroscope inside the upper joint compartment. For measurements < or = 70 mm, puncture points 7 mm from the midtragus led to insertion of the arthroscope inside the upper joint compartment. This suggests that for canthal-tragus distances of > 70 mm, the arthroscope should be inserted 10mm from the midtragus and for distances < or = 70 mm it should be inserted at 7 mm for the greatest likelihood of entering the upper joint compartment of the TMJ.
本研究旨在探讨内眦-耳屏线的长度与耳屏穿刺点距外耳道口的距离之间是否存在相关性。在 11 具尸体头侧，于外耳道口上方 7mm、内眦-耳屏线下方 2mm 处标记穿刺点，对侧于外耳道口上方 10mm、内眦-耳屏线下方 2mm 处标记穿刺点。将关节镜穿刺套管针插入标记点，插入后通过在体开放解剖确定关节镜的解剖位置。解剖完成后，测量尸体头侧两侧的内眦-耳屏线长度。对于 >70mm 的测量值，外耳道口上方 10mm 的穿刺点可使关节镜插入上关节腔；对于 ≤70mm 的测量值，外耳道口上方 7mm 的穿刺点可使关节镜插入上关节腔。这表明，对于 >70mm 的内眦-耳屏距离，关节镜应从外耳道口上方 10mm 处插入，对于 ≤70mm 的内眦-耳屏距离，关节镜应从外耳道口上方 7mm 处插入，以最大程度地进入 TMJ 的上关节腔。
