calf muscle 3d model

A cinematic 9:16 ultra-realistic 3D medical scene inspired by Zack D Films style. One modern man, wearing casual athletic clothes (gray shirt, black shorts, sneakers), standing against a clean blue background. The man suddenly experiences a muscle cramp in his calf — he bends slightly forward in visible pain, grimacing, as he grabs the back of his lower leg with both hands. The camera focuses on his calf muscle. Add a glowing red circle or spot highlighting the exact area of pain, zoomed in for clarity, with realistic skin detail, muscle tension, and visible strain. No text or labels. Lighting should be soft studio HDR with a cinematic medical tone. The overall look must be hyper-realistic, medically accurate, and rendered in 4K resolution — clean blue background, smooth animation-ready lighting, shallow depth of field, and photorealistic anatomy detail.