Exoskeletal rod

ArcHivist Hegelia observed that the Cybermen of the early CyberFaction boasted powerful cybernetic limbs whose movements were guided by intricate links of exoskeletal rods, allowing them to stride purposely towards their objective. (AUDIO: The Early Cybermen, TV: The Invasion)

Behind the scenes
In 1974, a Cyberman which appeared for a photocall with Fourth Doctor actor Tom Baker was an "early CyberFaction" with the chest unit and exoskeletal rods of the CyberTelosians.