Patient-Specific Functional Scale (PSFS)

Objective

The PSFS was designed to evaluate functional changes primarily in patients presenting musculoskeletal issues. The goal of the PSFS is to provide clinicians with a valid, reliable, responsive, and efficient measure that is easy to use and applicable for a wide variety of clinical situations.

Interpretation

For each activity: 0 corresponds to being “unable to complete the task” and 10 corresponds to being “able to complete the task to the same level as before the problem started.”

Execution

In the original description of the scale, patients are asked to identify up to 5 important activities that they are unable to do or they are finding difficult because of their musculoskeletal injury.

As well as identifying the activities, patients are invited to evaluate the current level of difficulty associated with each activity on an 11-point scale.

During subsequent sessions, patients are again invited to evaluate the previously identified activities and have the opportunity to mention new activities that have become difficult during that time.

Time Needed

Quick to complete.

Clinical Value

The PFPS is valid, reliable, and responsive for measuring changes over time in patients with musculoskeletal conditions, including knee disorders, lumbago, and disorders related to the neck.

Hefford, Cheryl, J. Haxby Abbott, Richard Arnold, et G. David Baxter. « The Patient-Specific Functional Scale: Validity, Reliability, and Responsiveness in Patients with Upper Extremity Musculoskeletal Problems ». The Journal of Orthopaedic and Sports Physical Therapy 42, no 2 (février 2012): 56‑65. https://doi.org/10.2519/jospt.2012.3953.

Horn, Katyana Kowalchuk, Sophie Jennings, Gillian Richardson, Ditte van Vliet, Cheryl Hefford, et J. Haxby Abbott. « The Patient-Specific Functional Scale: Psychometrics, Clinimetrics, and Application as a Clinical Outcome Measure ». Journal of Orthopaedic & Sports Physical Therapy 42, no 1 (1 janvier 2012): 30‑42. https://doi.org/10.2519/jospt.2012.3727.

Stratford, P., C. Gill, M. Westaway, et J. Binkley. « Assessing Disability and Change on Individual Patients: A Report of a Patient Specific Measure ». Physiotherapy Canada 47, no 4 (1 octobre 1995): 258‑63. https://doi.org/10.3138/ptc.47.4.258.