Figure 3: Demonstration of the sites to palpate a tender medial and lateral retinacular nerve in the patient with joint pain. Shaded areas are areas of cutaneous dysesthesia representing the medial cutaneous nerve of the thigh at the patella and the infrapatellar branch of the saphenous nerve laterally. The red areas are the sites to palpate for tenderness of the medial and the lateral retinacular nerves, and will be the sites for the nerve blocks.