Diagnostic criteria for Patellar Tendinopathy using Pressure-Pain Threshold algometry and the VISA-P.

Kregel, J. (Jeroen) (2010) Diagnostic criteria for Patellar Tendinopathy using Pressure-Pain Threshold algometry and the VISA-P. thesis, Human Movement Sciences.

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Abstract

Objective: In the clinical practice, a standardized diagnostic method for jumper's knee, or patellar tendinopathy (PT), is currently not available. The aim of the present study was to analyze the value of pressure-pain algometery and VISA-P norm scores in differentiating between symptomatic and asymptomatic patellar tendons. Methods: A total of 234 subjects, 113 diagnosed with PT and 121 healthy controls were included. Demographic and anthropometric data were analyzed using independent samples student's t-tests. The PPT and VISA-P data between healthy and PT subjects were analyzed with non-parametric Mann-Whitney U tests. With a receiver operating characteristic (ROC) curve the optimal cut-off points of the PPT and VISA-P to distinguish between symptomatic and asymptomatic patellar tendons were calculated. Furthermore, the sensitivity, specificity and post-test probabilities were calculated. Results: The optimal cut-off point based on the coordinates of the ROC curve was a PPT of 36,8 N. The sensitivity and specificity calculated for the optimal cut-off point were 96% and 97% respectively. There was a post-test probability of 96,4% that subjects with a PPT below 36,8 N. had PT. The coordinates of the ROC curve showed an optimal cut-off score of 83 for the VISA-P. There was a post-test probability of91,8% that subjects with a VISA-P total score below 83 had PT. Conclusions: Algometry and the VISA-P questionnaire are useful in diagnosing PT. To standardize their diagnostics in the assessment of knee injuries, clinicians should consider the use of algometry and the VISA-P. Furthermore, these measurements are useful in the evaluation of interventions for PT.

Item Type:	Thesis (Thesis)
Supervisor name:	Wilgen, C. P. van and Zwerver, J.
Faculty:	Medical Sciences
Date Deposited:	25 Jun 2020 10:59
Last Modified:	25 Jun 2020 10:59
URI:	https://umcg.studenttheses.ub.rug.nl/id/eprint/1923

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