The Tibial Tubercle–Trochlear Groove Distance on Axial CT and MRI: Letter to the Editor

Nizić, Dinko

doi:10.1177/0363546513512785

Cited by 3 publications

(3 citation statements)

References 11 publications

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“…5,18 However, reliability between raters with extensive musculoskeletal imaging training and raters with other medical training has not been evaluated. 14 We reported excellent interrater reliability between a fellowship-trained musculoskeletal radiologist and a fellowship-trained sports medicine orthopaedic surgeon on CT (0.914) and on MRI (0.936). These values were higher than the interrater reliability on CT (0.78) and MRI (0.84) reported by Camp et al, 5 which may be explained in part by inclusion of a large number of nondysplastic trochleae in our study.…”

Section: Discussionmentioning

confidence: 79%

“…2,3 Rather, we set out to compare the intermethod effect of imaging modalities on the measurement of the TTTG distance, a measurement that previous studies have demonstrated is reliable in both symptomatic and asymptomatic patients from pediatric and adult populations. 5,8,16 Second, Nizic et al 14 recently raised the concern that high-grade trochlear dysplasia may influence landmark selection during TTTG measurements, particularly in the case of raters without formal musculoskeletal imaging training. The cohort evaluated in this study was largely asymptomatic for patellar instability, increasing the likelihood of optimal landmark selection using nondysplastic trochleae.…”

Section: Discussionmentioning

confidence: 99%

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Systematic Technique-Dependent Differences in CT Versus MRI Measurement of the Tibial Tubercle–Trochlear Groove Distance

James

Surowiec

et al. 2015

Am J Sports Med

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A systematic bias toward lower TTTG distances on MRI compared with CT was found. This finding is likely dependent on imaging technique, including patient positioning. Patient knees were positioned in varus on the MRI compared with the CT examination, with resulting lower TTTG distances on MRI compared with CT. The TTTG distances on CT and MRI vary with imaging technique, which may be attributable to patient positioning and result in differences among imaging centers.

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Section: Discussionmentioning

confidence: 79%

Section: Discussionmentioning

confidence: 99%

Systematic Technique-Dependent Differences in CT Versus MRI Measurement of the Tibial Tubercle–Trochlear Groove Distance

James

Surowiec

et al. 2015

Am J Sports Med

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“…It is becoming increasingly hard to invent anything these days, so I compliment the authors on their effort in bringing us the tibial tuberosity–Roman arch (TT-RA) distance. Femoral trochlear dysplasia indeed makes the measurement of the standard tibial tuberosity–trochlear groove (TT-TG) distance difficult—this is a long-known fact (even I highlighted it close to decade ago, 1 and I am just a little fish in the sea of patellofemoral instability research). However, I do feel there is something else that needs highlighting here.…”

mentioning

confidence: 99%