There is no definitive answer to this question. The first problem is that the number of bones in a body changes. A fetus has about 300 bones, but by the time of birth, many of them have fused together. The average adult human has 206 bones. Also, what constitutes a joint is problematic.
Pallet Racking - Narrow Aisle. Narrow Aisle pallet racking is the space-saving option if floor space is limited: maximum storage capacity, fast accessability to every pallet and quick order-picking straight from the racking. The main advantage of narrow-aisle pallet racking is the combination of fast order-picking and the best possible use of space.
Narrow Aisle specialist trucks typically have an articulated mast giving a net result of a much larger increase in space utilisation when compared with conventional reach truck applications. The trucks turn in the aisles via the articulated mast and no guide rail or other guidance system is required.