close-up view of the knee joint bones 3d rendering . human skeletal anatomy, osteology, science, biology, medical and

knee joint bones anatomy skeleton closeup femur shin patella kneecap xray medical articulation cartilage human body blue skeletal isolated anatomical science medicine biology radiology rendering render bone osteology healthcare outlines contours silhouette horizontal accurate leg copy space flexing flexed bent biomechanics close-up view concept