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O'Donoghue's unhappy triad

Dr Yuranga Weerakkody and Dr Frank Gaillard et al.

The O'Donogue's unhappy triad comprises of a 3 types of pathology that frequently tend to occur simultaneously in knee injuries. They are

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References

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1. Sanders TG, Medynski MA, Feller JF et-al. Bone contusion patterns of the knee at MR imaging: footprint of the mechanism of injury. Radiographics. 2000;20 Spec No (suppl 1): S135-51. Radiographics (full text) - Pubmed citation
2. Shelbourne KD, Nitz PA. The O'Donoghue triad revisited. Combined knee injuries involving anterior cruciate and medial collateral ligament tears. Am J Sports Med. 1992;19 (5): 474-7. Pubmed citation
3. Barber FA. What is the terrible triad?. Arthroscopy. 1992;8 (1): 19-22. Pubmed citation