Prosthetics – Pin Locking Liners
On the market currently, there are more than one different pin locks that are available to prosthetic users. Each year, more styles and variations of these liners are being added to the prosthetic componentry inventory that is available to amputees.
It is important for the reader to note that there is not one “winner” in the world of pin locking liners. Pin locking liners have unique features that make one better for a particular patient than another.
The following are some advantages of pin locking liners :
1.) They represent a more simple way of suspending an individual’s prosthesis.
2.) Pin locking liners also are, for many prosthetic users, a secure method of suspension.
3.) If a prosthetic patient uses this type of suspension (pin lock) a suspension sleeve is not necessarily needed. Sometimes a suspension sleeve can bunch up behind the knee (in the patient’s popliteal fossa). If a suspension sleeve “bunches up” a below knee amputee may complain that their knee flexion is inhibited. This could definitely come into play if the prosthetic user is in a seated position.
We do not want to discourage the use of suspension sleeves as a secondary method of suspension however. Auxiliary suspension methods, such as a sleeve, can be helpful in many regards and can provide security and peace of mind to amputees who like the added suspension.
4.) When compared to other means of prosthetic suspension, pin locking systems are appreciated by many prosthetic users for being “less cumbersome”. (In later posts we will discuss other forms of suspension in more detail). However for now, it is important to note that a pin locking system can be more streamlined / less cumbersome than a thigh corset or Silesian belt suspension type, for example. – Having said this, and as stated earlier, it is important to note that some patients also like to turn to a thigh corset, a supracondylar cuff, or a silesian belt for supplementary suspension of a prosthesis. There just is not a “black and white” answer to suspension systems. Each person is unique.
5.) When applying a pin locking liner, many users will state that it is more simple to use. For example, some more complicated forms of suspension incorporate the use of lotions, electric technology, additional sleeves etc… while this means that more hand dexterity is required to apply more complicated suspension types, it should be noted that pin locking liners due require a base level of functional hand dexterity.