PS knee most commonly stands for Posterior-Stabilized knee. This refers to a type of total knee arthroplasty (TKA), a surgical procedure to replace a damaged knee joint. In a PS knee replacement, the artificial knee joint design incorporates a mechanism to provide stability, particularly during bending and straightening of the knee. This is in contrast to cruciate-retaining (CR) TKA, where the natural ligaments of the knee are preserved to provide stability.
Several sources mention PS in relation to knee surgery and outcome scores:
- Posterior-Stabilized Total Knee Arthroplasty (PS-TKA): This is frequently discussed in the context of comparing its outcomes with cruciate-retaining TKA (https://pmc.ncbi.nlm.nih.gov/articles/PMC6526126/, https://jeo-esska.springeropen.com/articles/10.1186/s40634-021-00422-2). The choice between PS and CR depends on various factors related to the patient's knee and overall health.
- Knee Injury and Osteoarthritis Outcome Score Physical Function Short Form (KOOS-PS): This is a shorter version of a questionnaire used to assess knee function and related quality of life (https://pubmed.ncbi.nlm.nih.gov/22588746/, https://pmc.ncbi.nlm.nih.gov/articles/PMC4336550/, https://pubmed.ncbi.nlm.nih.gov/19912982/, https://www.sciencedirect.com/science/article/pii/S106345840900017X). Here, "PS" denotes the "Physical Function Short Form."
It's important to note the context in which "PS knee" is used. In the context of knee replacement surgery, it almost always refers to a Posterior-Stabilized knee implant. However, in the context of knee outcome assessments, it can refer to a shortened form of a questionnaire.
