Valsalan, Rejith Mannambeth Ewings sarcoma of patella: A rare entity treated with a novel technique of extensor mechanism reconstruction using tendoachilles auto graft. [electronic resource] - World journal of orthopedics Oct 2015 - 744-9 p. digital Publication Type: Case Reports; Journal Article ISSN: 2218-5836 Standard No.: 10.5312/wjo.v6.i9.744 doi