A photorealistic 3D model of Ethan's severed hand, showcasing detailed anatomy with visible bone, muscle, and tendon structures where the hand has been torn from the wrist. The skin appears pale and lifeless, with blood stains and smears indicating recent trauma. The hand should have a slightly curled posture, as if frozen in its last moment of use, with dirt and grime accentuating the horror aesthetic. The model should include subtle details like fingerprints, nails, and possible signs of wear or injury prior to severing.