Northern white-cheeked gibbons have specialized wrist joints and powerful arm muscles, which allow them to swing from tree branches, like the male pictured above in Pu Mat.
They said dinosaurs lack a number of features that are distinctly avian, including wishbones, or fused clavicles; bones riddled with air pockets; flexible wrist joints; and three-toed feet.
Diagnostic value of color Doppler ultrasound in wrist joints,and hand-articular lesions in patients with rheumatoid arthritis
MRI appearance of synovium, bone, cartilage and tendons of wrist joints and so on were observed.