Knee plays an important role in the human movement. 1,2 Knee stiffness, in an another word a limitation in range of motion (ROM), is a potential complication after intra-articular or extra-articular injuries involving articular structures. It is primarily due to intra-and extra-articular fibrosis and scarring adhesions in the quadriceps-femoral apparatus. Patients with diabetes mellitus, poor compliance to exercise therapy, and joint immobilization are at an increased risk for forming knee stiffness. 1,3,4 OLGU SUNUMU CASE REPORT ABS TRACT Knee stiffness is an important complication of knee injury and commonly affects natural ambulation. We demonstrated a case of 29-year old male who presented with knee stiffness following femur fracture and knee surgery and underwent ultrasound-guided hydrodissection into the fibrotic tissues. The patient's history revealed an open reduction internal fixation surgery after femur fracture and graft surgery for the tissue defect in the popliteal region. Although the patient had a 2-month physical therapy program including range of motion (ROM), stretching and strengthening exercises, and underwent arthroscopic lysis of adhesions after while, the left knee ROM continued to be seriously limited. Ultrasound-guided hydrodissection procedure around fibrotic tissues and common peroneal nerve block were performed once a week, 4 times in total. The patient underwent a total of 20 training sessions including ROM, stretching and strengthening exercises. The improvement of the knee flexion from 60° to 70° and extension from-35° to-15° were detected. This case report demonstrates that ultrasound-guided hydrodissection combined with peripheral block is a minimally invasive and a safe method in the treatment of patients with joint stiffness after knee trauma/surgery.
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