Indications Certain tibial plateau fractures Knee fractures and ligament injuries that require immobilization while awaiting nonemergent operative repair or casting Certain ligament injuries that do not require repair (as definitive treatment) Patellar tendon injury Patellar dislocation Quadriceps tendon injury Contraindications Absolute contraindications None Relative contraindications Open fractures Complications Lower extremity deep vein thrombosis Joint stiffness Equipment Commercially available knee immobilizer * * There are different brands, but they all typically consist of a heavy foam / cloth wrap that extends from mid-calf to mid-thigh.