What measurement means for total knee replacement care

There are more than 500,000 total knee replacement surgeries performed in the United States each year. By 2030, an estimated 3.5 million procedures will be performed annually due to the nation’s aging population and increasing obesity. Candidates for total knee replacement often have severe destruction of the knee joint associated with progressive pain and impaired function.

One way for your provider to assess your knee problems and pain, and their impact on your daily activities is by using the Oxford Knee Score (OKS) assessment. The OKS can help both you and your doctor understand the level of pain you are experiencing. It asks 12 questions about your daily living activities in various areas, including level of pain; self-care; getting in/out of car; length of time able to walk; sitting; kneeling; night pain; interference with normal work; limping; and ability to climb or descend stairs.

Based on your answers, the score reflects the severity of the problems with your knee. The higher the score, the better your knee functions is. Assessing the function and pain in your knee helps to identify the treatment options that are right for your individual needs.

The statewide rate of use of the OKS tool before surgery by all reporting medical groups is 36%. This means 36 of 100 patients with total knee replacement surgery were asked by their clinics to assess their knee function by responding to the 12 question survey three months before surgery.

The statewide rate of use of the OKS tool after surgery by all reporting medical groups is 31%. This means 31 of 100 patients with total knee replacement surgery were asked by their clinics to assess their knee function by responding to the 12 question survey nine to 15 months after surgery.

The statewide rate of use of the OKS tool before and after surgery by all reporting medical groups is 18%. This means 18 of 100 patients with total knee replacement surgery were asked by their clinics to assess their knee function by responding to the 12 question survey both before and after surgery.

How we calculate the report

This report is based on information from patients who received services between January 1 and December 31, 2012. We measure how often medical groups use the OKS survey to assess the impact of patients' knee function. It is based on the percentage of patients ages 18 and older that have both a pre-operative and post-operative OKS assessment.