Pin Vs Suction

Song of The Day: Vance Joy - Clarity

A very quick & not very complete video showing the difference between the locking pin vs suction BK prosthesis.

It is a generality to say many or a majority of BK amputees start out in the pin. It's also a mostly true to state a majority eventually end up in suction over time. 

Both systems have there pros & cons.

Pin: It is usually easier to don (except for learning to get the pin lined up at first). It is more basic. Typically more durable. Less parts to break or wear out. Range of movement is often greater. Pistoning & shearing can cause skin to break down easier. Less secure of a fit, but if it fits properly is very effective. The pin is probably a better system to accommodate volume change, especially for a non compliant patient. 

Suction: More stable, Typically better on uneven surfaces. Less play. Helps the user maintain a more stable limb volume. Can wear out easier & get a leak. Better on the skin most of the time if (This is a very big if) it fits properly. Suction can tear your leg up & cause blisters or skin breakdown if the socket is not fitting good. The user definitely has to stay on top of his fit & pay more attention to properly don the prosthesis. 

These are very broad generalizations I'm making. Each person & each person's residual limb are unique & can be more suited to one system or the other.