A 17-year-old male baseball catcher presents with right knee pain after an opponent slid into home plate, striking the anteromedial aspect of the patient’s knee while it was in extension trying to block the plate. An x-ray of the tibia and fibula was obtained (courtesy of Dr. Haytham Bedier, Radiopaedia.org).
References and Resources:
Want more information about the knee exam? Check out the SplintER archives.
- Shon OJ, Park JW, Kim BJ. Current concepts of posterolateral corner injuries of the knee. Knee Surg Relat Res. 2017;29(4):256-268. PMID: 29172386
- Juhng SK, Lee JK, Choi SS, Yoon KH, Roh BS, Won JJ. MR evaluation of the “arcuate” sign of posterolateral knee instability. Am J Roentgenol. 2002;178(3):583-588. PMID: 11856678
- Strub WM. The arcuate sign. Radiology. 2007; 244(2):620-621. PMID: 17641383
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