Obtain radiographs to rule-out avulsion fracture
Ultrasound can help with diagnosis
Proximal
Swelling and tenderness over bicipital groove
Loss of strength is minimal due to intact short head inserting at corocoid process
Distal
Swelling and tenderness over antecubital fossa
Inability to palpate distal<unk><unk>  in antecubital fossa
Hook test (~100% sensitive and specific, as compared to MRI which is 92% and 85%, respectively)
Patient actively supinates and flexes elbow to 90 degrees
Hook the distal<unk><unk>  insertion at radial head to evaluate whether intact
Swelling and tenderness over bicipital groove
Loss of strength is minimal due to intact short head inserting at corocoid process
Swelling and tenderness over antecubital fossa
Inability to palpate distal<unk><unk>  in antecubital fossa
Hook test (~100% sensitive and specific, as compared to MRI which is 92% and 85%, respectively)
Patient actively supinates and flexes elbow to 90 degrees
Hook the distal<unk><unk>  insertion at radial head to evaluate whether intact
Patient actively supinates and flexes elbow to 90 degrees
Hook the distal<unk><unk>  insertion at radial head to evaluate whether intact
Biceps tendon rupture
Distal humerus fracture
Achilles tendon rupture
Radial head fracture
Quadriceps tendon rupture
Essex-Lopresti fracture
Triceps tendon rupture
Capitellum fracture