There was a junction between the manubrium of each.

Sir Astley Cooper saw a monster in Paris in 1792 which, by his description, must have been very similar to Ritta-Christina.
The Tocci brothers were born in 1877 in the province of Turin, Italy.
They each had a well-formed head, perfect arms, and a perfect thorax to the sixth rib; they had a common abdomen, a single anus, two legs, two sacra, two vertebral columns, one penis, but three buttocks, the central one containing a rudimentary anus.

The right boy was christened Giovanni-Batista, and the left Giacomo.

Each individual had power over the corresponding leg on his side, but not over the other one.

Walking was therefore impossible.