An electrode assembly including a first spine having a first end, a second end, and at least one first mating structure; a second spine having a first end, a second end, and at least one second mating structure, wherein the first spine is generally opposite to the second spine, and wherein the first mating structure is capable of mating with the second mating structure; a first lead housed at least partially within the first spine, wherein the first lead extends from the first end of the first spine through at least a portion of the first spine; a second lead housed at least partially within the second spine, wherein the second lead extends from the first end of the second spine through at least a portion of the second spine; at least one electrode providing a route for electrical conduction between the first lead to the second lead; a first rail joining the first spine and the second spine at a position near the first ends of the first and second spines and angled toward the first ends; and a second rail joining the first spine and the second spine at a position near the second ends of the first and second spines and angled toward the second ends.