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Table 3 Values of volume and thickness of harvested and unharvested tendons over two acquisition days, one examiner

From: Reliability and methodology of quantitative assessment of harvested and unharvested patellar tendons of ACL injured athletes using ultrasound tissue characterization

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