Victorian Institute of Sport Assessment – Patella score

Abstract

The Victorian Institute of Sport Assessment – Patella score (VISA-P) is a short, validated instrument designed to assess the severity of symptoms, knee function, and the overall capacity for sport participation in athletes diagnosed with patellar tendinopathy, commonly known as jumper’s knee. The questionnaire is highly suitable for monitoring the load tolerance and progression of sporting patients. It consists of eight questions focused on pain complaints and functional limitations during activities that load the patellofemoral joint. A low score on the VISA-P corresponds directly to greater reported pain and functional impairment during the assessed activities.

Keywords

Patellar Tendinopathy, Jumper’s Knee, Knee Function, Load Tolerance, Questionnaire, Sports Medicine, Lower Extremity, VISA-P, Patient-Reported Outcome Measure.

Authors

Visentini PJ, Khan KM, Cook JL, Kiss ZS, Morris HO, Young DA (1998); Dutch Version: Zwerver J, Kramer T, van den Akker-Scheek I (2009).

Purpose

The primary purpose of the VISA-P scale is to quantify the functional status and pain levels associated with activities that load the patellofemoral joint in athletes suffering from patellar tendinopathy. It provides a standardized, quantifiable measure for researchers and clinicians to track the severity of the condition over time.

The instrument is specifically tailored for use in clinical and research settings involving physically active individuals. It serves as an essential tool for monitoring recovery, evaluating the effectiveness of various treatments, and aiding in decisions regarding an athlete’s readiness to return to full sport participation. The total score provides a clear index of the patient’s subjective knee health.

Construct

The VISA-P measures the multidimensional construct of health status related specifically to patellar tendinopathy. This construct is operationalized across three primary domains assessed by the eight items: Pain experience during daily and sporting activities; Functionality, specifically regarding movements that stress the patellar tendon (such as squatting or jumping); and the Capacity for Sport Participation without significant limitations. The total score, ranging from 0 (worst function/maximum pain) to 100 (best function/no pain), provides a holistic measure of the impact of the condition on the athlete’s life.

Validity

The VISA-P scale has demonstrated robust psychometric properties across numerous international studies. The initial development established strong face and content validity, ensuring that the items accurately reflect the symptoms experienced by patients with jumper’s knee. Subsequent research has confirmed its construct validity, showing appropriate correlations with other established knee-specific quality of life measures and patient-reported pain scales.

The scale is particularly valued for its sensitivity to change, making it an excellent tool for longitudinal studies. This responsiveness to clinical improvement or decline confirms its ability to track treatment efficacy. Criterion validity is often supported by comparing VISA-P scores against objective measures of functional performance, such as hop tests, or imaging assessments of tendon pathology.

Reliability

The VISA-P exhibits high test-retest reliability, demonstrating stability and consistency when administered repeatedly to patients whose clinical condition remains unchanged. This suggests that the scale provides a reliable baseline measure for symptom severity.

Furthermore, studies investigating the scale’s internal consistency—the degree to which all items measure the same underlying construct—have consistently reported excellent results (high Cronbach’s alpha values) across various athletic populations. This confirms that the 8 items reliably converge to assess the singular construct of symptom severity and functional impact related to patellar tendinopathy.

Factor Analysis

The VISA-P scale was primarily designed as a unidimensional instrument intended to yield a single total score representing the overall severity of the condition. Factor analysis studies generally support this robust, single-factor structure, confirming that the scale effectively measures one primary construct related to pain and function in the context of patellar tendinopathy.

However, some research suggests that the items may cluster into smaller sub-factors, typically separating the pain-focused questions (Items 1–6) from the sport/function-focused questions (Items 7–8). Despite these potential sub-groupings, the clinical standard remains the use of the total score for interpretation, emphasizing its comprehensive function as a single index of health status.

Instrument

Test Type: Patient-Reported Outcome Measure (PROM).

Format: Questionnaire consisting of 8 items.

Language Available: English (Original), Dutch, and various other validated translations (e.g., German, Spanish, Chinese).

Population Group: Athletes or physically active individuals.

Age Group: Adults (Volwassenen).

Population Details: Specifically designed for patients suffering from Patellar Tendinopathy (Jumper’s Knee) and related musculoskeletal disorders of the lower extremity.

Test Methodology: Self-administered paper or digital questionnaire. The total score is calculated based on the responses, ranging from 0 to 100. A score of 100 signifies a completely pain-free, fully functioning knee.

Keywords

PROM, Sports Injury, Musculoskeletal, Knee Pain, Visentini, Functional Assessment, Load Capacity, Lower Extremity, Bone and Joint Disorders.

Authors

Author ORCID Identifier: Information not specified in the source content.

Affiliation Email addresses: Information not specified in the source content.

Correspondence Address: Information not specified in the source content.

Permissions & Fee and Test Year

The VISA-P scale was originally published in 1998. It is widely utilized in clinical practice and research settings globally. While generally considered an open-access instrument for non-commercial use, researchers should always cite the original publication. Formal permissions for commercial use or large-scale reproduction should be sought from the original authors or the publishing journal, the British Journal of Sports Medicine.

The original PDF explanation form can be downloaded here: VISA-P Explanation Form PDF.

The original PDF measurement instrument can be downloaded here: VISA-P Measurement Instrument PDF.

Reference’s

Visentini PJ, Khan KM, Cook JL, Kiss ZS, Morris HO, Young DA. The VISA score: an index of severity of symptoms in patients with patellar tendinopathy (jumper’s knee). Br J Sports Med. 1998 Jun;32(2):162-4.

Zwerver J, Kramer T, van den Akker-Scheek I. [Dutch translation and validation of the VISA-P questionnaire]. Ned Tijdschr Geneeskd. 2009;153(32):1378-83. (Translation reference)

Items of the Victorian Institute of Sport Assessment – Patella score

IMPORTANT: The following scale items must be preserved in their original language and must not be changed in any way.

The source content describes the composition of the scale but does not list the individual items. It states that the scale is comprised of 8 questions assessing pain complaints and load capacity during activities that stress the patellofemoral joint.