Intra-articular steroid injection
knee flexion
STERILE, INFILTRATION
The participant was supine, with 30° knee flexion. The probe was directed axially, and the quadriceps tendon was recognized with the suprapatellar recess below. The sterile technique was considered for injection. The needle was introduced from the lateral side to medial one after infiltration anesthesia using 2 ml 1% lidocaine hydrochloride (Xylocaine, AstraZeneca). After proper setting of the needle, the injection of 1 mL of TA 40 mg (Kenacort, Bristol Myers Squibb) was done. Doppler was used to confirm the accuracy of the injection [