Also known as: Leg amputation
Arizona suffers a traumatic leg injury in the plane crash with exposed bone, later requiring tourniquet application to prevent exsanguination. She makes dark jokes about being married to an orthopedic surgeon while staring at her own bone.
Also known as: Spinal cord damage
The pilot Jerry suffers spinal cord injury in the crash and reports he cannot feel his legs. Arizona provides c-spine stabilization and confirms the likelihood of paralysis.
Also known as: Trampled
Lexie is trapped under plane debris with crushed legs and pelvis, suspected massive hemothorax, and loss of sensation in one arm. Despite attempts to stabilize her, she dies from her injuries while Mark professes his love.
Also known as: Blood in chest cavity
Lexie self-diagnoses a massive hemothorax due to her chest feeling like it will explode and difficulty breathing following the crush injuries.
Also known as: Blood around the heart
Mark develops delayed cardiac tamponade hours after the crash with muffled heart sounds and jugular venous distention. Meredith performs an emergency pericardiocentesis using improvised equipment to drain the pericardial sac.
Also known as: Shock from blood loss
Mark is critically injured in the crash and develops progressive hemorrhagic shock. Despite treatment of his cardiac tamponade, he deteriorates and appears near death by episode's end.
Also known as: Injured hand
Derek sustains a severe hand injury requiring tourniquet application. As a neurosurgeon concerned about saving his surgical career, he has the tourniquet loosened despite bleeding risk and undergoes improvised wound closure with safety pins.
Also known as: Head laceration
Meredith is briefly unconscious after the crash and Cristina has to wake her up. She appears to have sustained a concussion or mild traumatic brain injury.
Also known as: PTSD
Cristina explicitly references having PTSD when discussing whether Derek is dead, noting it makes her unreliable. This is part of her ongoing trauma response to previous catastrophic events.