CR

• camp coventry


  perpendicular to the long axis of the lower leg entering the knee joint
• beclere


  perpendicular to the long axis of the lower leg entering 1/2" inferior to the apex of the patella
• holmblad


  perpendicular to the IR entering the mid-popliteal crease
• Rosenberg


  perpendicular and horizontal to the IR entering mid popliteal and exiting 1/2" inferior to the apex of the patella
• hobbs


  perpendicular to the IR entering the mid patellofemoral joint
• merchant


  angled 30 degrees caudad from horizontal plane of the femur entering midway between the patellae at the level of the patellofemoral joint
• hughston prone


  angled 45 degrees cephalad entering the patellofemoral joint
• settagast


  angled 15-20 degrees cephalad entering the patellofemoral joint space