Radiology
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Magnetic resonance (MR) imaging has shown that tears of the anterior cruciate ligament (ACL) are frequently accompanied by meniscal and osseous injuries. Abnormalities of the cartilage overlying the lateral femoral condylopatellar sulcus (notch) also have been noted during arthrotomy of ACL-deficient knees. ⋯ No patient with a normal ACL had a sulcus greater than 1.2 mm in depth. A sulcus deeper than 1.5 mm is equivalent to 3 standard deviations above the mean and was a reliable indirect sign of a torn ACL.
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The advances that radiologic science has experienced in recent history have been earned through many means, one of them being animal research. Since the 1980s, animal research has come increasingly into the public eye, through the efforts of animal welfare and animal rights activist groups. ⋯ Because of the financial and political power of these groups and the increasing public awareness of such issues, it is extremely important that the medical and scientific communities become more involved in educating the public on the importance of animal research and clarifying the difference between animal welfare and animal rights. Equally important, the medical community must continue to adhere to high standards in research that involves animals.