A clamp assembly for external fixation of a limb, the clamp assembly comprising: a first clamp configured to connect to a first rod assembly , the first clamp having a centerline; a main clamp body engaged to the first clamp, the main clamp body having a longitudinal axis, the main clamp body defining a plurality of holes (1224A-1224D) along the longitudinal axis, individual ones of the plurality of holes configured to receive a bone pin , wherein the plurality of holes are positioned such that each hole is successively further away from the centerline; a sliding clamp extending along the longitudinal axis, the sliding clamp configured to move along the longitudinal axis and to secure the bone pin in place, a fixation bolt coupled to the sliding clamp and configured to actuate the sliding clamp, and a pin , wherein the first clamp includes a first engagement portion defining a first aperture sized and shaped to receive the pin , wherein the main clamp body includes a second engagement portion defining a second aperture sized and shaped to receive the pin , and wherein the main clamp body engaged to the first clamp is hingedly engaged to the first clamp when the first engagement portion and the second engagement portion are aligned and when the pin is extended through the first aperture and the second aperture, wherein the assembly further comprises a locking screw configured to extend through the first clamp, wherein the pin defines a hole configured to receive the locking screw, wherein the first engagement portion defines a first cylindrical bearing surface , wherein the second engagement portion defines a second cylindrical bearing surface configured to engage the first cylindrical bearing surface, and wherein, when the locking screw is tightened, the first and second cylindrical bearing surfaces engage one another. a first clamp configured to connect to a first rod assembly , the first clamp having a centerline; a main clamp body engaged to the first clamp, the main clamp body having a longitudinal axis, the main clamp body defining a plurality of holes (1224A-1224D) along the longitudinal axis, individual ones of the plurality of holes configured to receive a bone pin , wherein the plurality of holes are positioned such that each hole is successively further away from the centerline; a sliding clamp extending along the longitudinal axis, the sliding clamp configured to move along the longitudinal axis and to secure the bone pin in place, a fixation bolt coupled to the sliding clamp and configured to actuate the sliding clamp, and a pin , wherein the first clamp includes a first engagement portion defining a first aperture sized and shaped to receive the pin , wherein the main clamp body includes a second engagement portion defining a second aperture sized and shaped to receive the pin , and wherein the main clamp body engaged to the first clamp is hingedly engaged to the first clamp when the first engagement portion and the second engagement portion are aligned and when the pin is extended through the first aperture and the second aperture, wherein the assembly further comprises a locking screw configured to extend through the first clamp, wherein the pin defines a hole configured to receive the locking screw, wherein the first engagement portion defines a first cylindrical bearing surface , wherein the second engagement portion defines a second cylindrical bearing surface configured to engage the first cylindrical bearing surface, and wherein, when the locking screw is tightened, the first and second cylindrical bearing surfaces engage one another. <EOS>