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Intra-rater reliability for acquisition and analysis – 1 examiner / 2 acquisitions/ 2 different days/ 2 analysis per patellar tendon
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24 Participants
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Examiner C.S.P.
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Harvested patellar tendon (n = 10)
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Unharvested patellar tendon (n = 20)
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Areas of interest
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Volume (cm3)
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Thickness (cm)
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Volume (cm3)
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Thickness (cm)
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DAY 1
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Patellar Apex
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1.4 ± 0.3
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NA
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1.0 ± 0.2
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NA
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Proximal tendon
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1.3 ± 0.2
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NA
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0.9 ± 0.1
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NA
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Mid Tendon
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1.3 ± 0.2
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0.7 ± 0.2
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0.9 ± 0.2
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0.5 ± 0.1
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Distal Tendon
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1.2 ± 0.2
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NA
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0.8 ± 0.1
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NA
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DAY 2
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Patellar Apex
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1.4 ± 0.2
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NA
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1.0 ± 0.2
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NA
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Proximal tendon
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1.3 ± 0.2
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NA
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1.0 ± 0.2
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NA
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Mid Tendon
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1.2 ± 0.2
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0.7 ± 0.2
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0.9 ± 0.2
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0.5 ± 0.1
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Distal Tendon
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1.3 ± 0.2
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NA
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0.9 ± 0.1
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NA
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ICC (95% CI)
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0.69 (0.48, −0.82)
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0.88 (0.60, − 0.96)
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0.67 (0.52, − 0.77)
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0.57 (0.20, 0.80)
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SEM (ICC) % GrM
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10.6
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8.9
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10.2
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8.7
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SEM (ICC)
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0.1
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0.1
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0.1
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0.04
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MDC
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0.4
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0.2
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0.3
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0.1
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- n = number of tendons assessed. Mean ± standard deviation
- ICC (95% CI) Intra-class coefficient of reliability (95% confidence interval), SEM % GrM Standard error of measurement as percentage of the grand mean, SEM Standard error of measurement, MDC Minimal detectable change
