TY - CHAP M1 - Book, Section TI - Knee Extensor Injuries A1 - Breed, Meghan A1 - Fitch, Robert Warne A2 - Knoop, Kevin J. A2 - Stack, Lawrence B. A2 - Storrow, Alan B. A2 - Thurman, R. Jason PY - 2021 T2 - The Atlas of Emergency Medicine, 5e AB - Knee extensor injuries usually occur from three different mechanisms: quadriceps tendon tear, patellar tendon tear, and patellar fracture. Extension may be limited by any disruption of these three. Patients with a history of trauma, other systemic conditions, steroid injections, or fluoroquinolone use are predisposed to tendon disruptions. SN - PB - McGraw-Hill CY - New York, NY Y2 - 2024/04/16 UR - accessemergencymedicine.mhmedical.com/content.aspx?aid=1181042097 ER -