A clamp assembly for a prosthetic limb includes a plug and a clamp. The plug includes a base and a rounded head defined by a cylindrical wall projecting from the base. The clamp includes a head portion having a plug bore configured to receive the head of the plug. The clamp head portion has at least six holes extending through the head portion, each hole configured to receive one of a screw or a bolt for engagement with the rounded head of the plug to fix the plug in a desired position relative to the head portion. The clamp also includes a clamping portion connected to the hollow head portion and defining a tube bore configured to receive a tube of a prosthetic limb.
