Biceps can be proximal or distal
Patella<unk>  2cm from insertion on patella
Achilles 2-6cm above calcaneus
Ultrasound: Tendons
Ultrasound: Signs
Ultrasound: Bone
Ultrasound: Pharyngeal
Ultrasound: Pelvic
Ultrasound: Lungs
Ultrasound: Soft tissue
Ultrasound: physics and knobology