Reduced Levels of Aligned Fibrillar Structure Are Not Associated With Achilles and Patellar Tendon Symptoms

Docking, Sean; Girdwood, Michael; Cook, Jill; Fortington, Lauren V; Rio, Ebonie

doi:10.1097/jsm.0000000000000644

Cited by 7 publications

(19 citation statements)

References 38 publications

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“…Although abnormal tendons on ultrasound have a vefold increased likelihood of developing tendinopathy and becoming symptomatic [34], results of the current study pointed to a lack of association between the amount of knee pain and any of the tendon quality variables explored [33]. From the 23 patellar tendons of ACL-D participants that displayed a clear disorganized area in the UTC scan, 5 had history of patellar tendinopathy, but only 2 of these tendons were associated with AKP.…”

Section: No Differences In Tendon Quality Regardless Of Pain Presencecontrasting

confidence: 61%

“…Previous studies have also found that the presence and severity of pain did not re ect the tendon quality observed in UTC scans. Docking et al (2018) assessed 152 patellar tendons of elite male Australian football players at the preseason, to observe that even though there were differences in the cross-sectional area and in the proportion of echo-types I + II when comparing athletes with and without pathology, symptoms or previous history, there was no association between tendon quality and presence, development or severity of symptoms in the tendon [33].…”

Section: No Differences In Tendon Quality Regardless Of Pain Presencementioning

confidence: 99%

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Patellar Tendon Quality and Knee Symptoms in Male Athletes Before the Anterior Cruciate Ligament Reconstruction

Pereira

Klauznicer

Auliffe

et al. 2020

Preprint

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Background: It is unknown if the quality of the patellar tendon is affected by an anterior cruciate ligament (ACL) injury. ACL deficient patients (ACL-D) have shown to have knee pain, quadriceps weakness and reduced knee function. Ultrasound tissue characterization (UTC) has been used to assess the quality of tendons by quantifying the proportion of echo-types using a numerical grading system from best to worst (I-IV). The primary aims of this cross-sectional study were to investigate the patellar tendon quality in athletes with unilateral ACL injuries, and to compare them to asymptomatic control tendons. The secondary aims were to assess the impact of anterior knee pain (AKP) in the patellar tendons of ACL-D, and to explore possible correlations between tendon quality and knee pain, knee extensor strength and time from ACL injury. Methods: UTC was used to scan both patellar tendons of 81 ACL-D athletes and 20 control tendons. Echo-types distribution was calculated to compare the quality between limbs of ACL-D and control tendons; and to compare ACL-D with AKP, other knee pain, and without pain. Associations between the variables of tendon quality and knee symptoms were explored. Results: No difference in tendon quality was found between limbs of ACL-D. Both tendons of ACL-D displayed more echo-type II at the patellar apex, and same or less echo-types III and IV than controls. The proximal half of the control tendons displayed better quality than the distal half. ACL-D knees with pain displayed less extensor strength, however, in addition to the lack of difference in tendon quality regardless of the presence and location of pain, there was no meaningful association between pain, extensor strength and tendon quality. Nevertheless, there were weak to moderate associations between tendon quality and time from ACL injury. Conclusion: Despite the ACL injury, there is no difference in tendon quality between ACL-D limbs, or when subgrouping ACL-D tendons by presence and location of knee pain. Different areas of the patellar tendon may present different characteristics that might be related to training. Tendon quality is better if a person has longer time from injury.

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Section: No Differences In Tendon Quality Regardless Of Pain Presencecontrasting

confidence: 61%

Section: No Differences In Tendon Quality Regardless Of Pain Presencementioning

confidence: 99%

Patellar Tendon Quality and Knee Symptoms in Male Athletes Before the Anterior Cruciate Ligament Reconstruction

Pereira

Klauznicer

Auliffe

et al. 2020

Preprint

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“…Generally, studies used 1 of 2 positions to perform the scan of the Achilles tendon: the standing position 18,24,25,29,30,34,40,43 and the prone position. 15,[19][20][21][22][23]27,28,31,33,41,42 Of the studies Hern ández G et al 35 Sitting position with the foot placed in a high surface and knee flexed 90 degrees Distal to proximal Bilateral Not described 7 contours were drawn (total free length of the tendon)…”

Section: Ultrasound Tissue Characterization Methodsmentioning

confidence: 99%

“…41,42 Most studies that performed a UTC scan of the Achilles tendon performed the scan from distal to proximal. 18,[24][25][26][27][28][29][30]34,[40][41][42][43] The patellar tendon was usually scanned from proximal to distal, [36][37][38][39][40] although 1 study scanned from distal to proximal. 35 The most frequently used window size was 25, N 5 16.…”

Section: Not Consistentmentioning

confidence: 99%

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Substantiating the Use of Ultrasound Tissue Characterization in the Analysis of Tendon Structure: A Systematic Review

Rabello¹,

Dams²,

Akker‐Scheek

et al. 2021

Clinical Journal of Sport Medicine

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Objective: To determine the role of ultrasound tissue characterization (UTC) in predicting, diagnosing, and monitoring tendon structure and/or tendinopathy. In addition, this study aims to provide recommendations for standardized methodology of UTC administration and analysis. Data Source: The PubMed, Embase, and Web of Science databases were searched (up to September 2018). All scientific literature concerning the use of UTC in assessing tendons was collected. The initial search resulted in a total of 1972 hits, and after screening by eligibility criteria, 27 articles were included. Results: In total, 18 investigating the Achilles tendon, 5 the patellar tendon, and 4 both Achilles and patellar tendons were included. The methods of UTC administration and analysis differed and were not uniform. The studies showed that the use of UTC to predict Achilles tendinopathy (AT) is inconclusive, but that a higher amount of tendon disorganization increases the risk of developing patellar tendinopathy (PT). In terms of diagnosis, UTC might provide additional information in AT cases. In addition, promising results were found for the use of UTC in both AT and PT in monitoring the effect of load or treatment on tendon structure. Conclusion: More research regarding the use of UTC in predicting tendon pathology is required. Ultrasound tissue characterization seems useful as an adjunct diagnostic modality because it can be used to differentiate symptomatic from asymptomatic tendons. In addition, UTC is a promising device to be used to monitor changes in tendon structure in response to load or treatment. Moreover, we provide recommendations of a standardized protocol concerning the methods of UTC measurement and analysis.

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Treatment preferences and use of diagnostic imaging in midportion Achilles tendinopathy by Australian allied health professionals

Bonello

Menz

Munteanu

et al. 2022

Physical Therapy in Sport

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Reduced Levels of Aligned Fibrillar Structure Are Not Associated With Achilles and Patellar Tendon Symptoms

Cited by 7 publications

References 38 publications

Patellar Tendon Quality and Knee Symptoms in Male Athletes Before the Anterior Cruciate Ligament Reconstruction

Patellar Tendon Quality and Knee Symptoms in Male Athletes Before the Anterior Cruciate Ligament Reconstruction

Substantiating the Use of Ultrasound Tissue Characterization in the Analysis of Tendon Structure: A Systematic Review

Treatment preferences and use of diagnostic imaging in midportion Achilles tendinopathy by Australian allied health professionals

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