Imaging the Anterior and Posterior Cruciate Ligaments

Parkar, Anagha P.

doi:10.5334/jbr-btr.1197

Cited by 5 publications

(2 citation statements)

References 33 publications

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“…The anterior cruciate (ACL) and posterior cruciate (PCL) ligaments enable the knee to support the body's weight and provide front-to-back and rotational stability, while the medial collateral ligament (MCL) helps support the inside of the knee providing side-to-side stability (Parkar, 2016;Phisitkul, James, Wolf, & Amendola, 2006). In the case of Pekka, the ACL, PCL, MCL, and meniscus were torn after receiving a strong impact to the knee while his foot was fixed on the ground.…”

Section: The Injurymentioning

confidence: 99%

Reactions to a career-ending sport injury

Ruiz¹,

Kaski²,

Frantsi³

et al. 2019

The Psychology of Sport and Performance Injury

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This chapter presents an end of athletic career case of Pekka Hirvonen, a professional ice hockey player. The presentation encompasses his case description, details of the multi-ligament knee injury he suffered, the role of athletic identity, pre-retirement planning, and coping skills in the process of transitioning out of sport. These factors are then further explained through Taylor and Ogilvie's (1994) conceptual model of adaptation to career transition. Based on the above, an interprofessonal plan of care was developed, and the case was evaluated from the perspective of those involved: a licensed psychologist, his wife, and the coach. The chapter also discusses ethical considerations, and provides an update of Pekka's progress two years later.

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Section: The Injurymentioning

confidence: 99%

Reactions to a career-ending sport injury

Ruiz¹,

Kaski²,

Frantsi³

et al. 2019

The Psychology of Sport and Performance Injury

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“…To prevent the development of post-traumatic osteoarthritis, timely and precise diagnosis of PCL injuries is vital. While diagnostic strategies are centred around the clinical examination and magnetic resonance imaging (MRI), PCL injuries are frequently missed in clinical practice ( 5 , 6 ). Because of complete fiber disruption, acute complete PCL injuries can be readily diagnosed using MRI with excellent sensitivity and specificity rates of ≥97% ( 7 - 9 ).…”

Section: Introductionmentioning

confidence: 99%

UTE-T2* versus conventional T2* mapping to assess posterior cruciate ligament ultrastructure and integrity—an in-situ study

Wilms¹,

Radke²,

Latz³

et al. 2022

Quant Imaging Med Surg

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Background: Clinical-standard morphologic magnetic resonance imaging (MRI) is limited in the refined diagnosis of posterior cruciate ligament (PCL) injuries. Quantitative MRI sequences such as ultrashort echotime (UTE)-T2* mapping or conventional T2* mapping have been theorized to quantify ligament (ultra-) structure and integrity beyond morphology. This study evaluates their diagnostic potential in identifying and differentiating partial and complete PCL injuries in a standardized graded injury model.Methods: Ten human cadaveric knee joint specimens were imaged on a clinical 3.0 T MRI scanner using morphologic, conventional T2* mapping, and UTE-T2* mapping sequences before and after standardized arthroscopic partial and complete PCL transection. Following manual segmentation, quantitative T2* and underlying texture features (i.e., energy, homogeneity, and variance) were analyzed for each specimen and PCL condition, both for the entire PCL and its subregions. For statistical analysis, Friedman's test followed by Dunn's multiple comparison test was used against the level of significance of P≤0.01.Results: For the entire PCL, T2* was significantly increased as a function of injury when acquired with the UTE-T2* sequence [entire PCL: 11.1±3.1 ms (intact); 10.9±4.6 ms (partial); 14.3±4.9 ms (complete); P<0.001], but not when acquired with the conventional T2* sequence [entire PCL: 10.0±3.2 ms (intact); 11.4±6.2 ms (partial); 15.5±7.8 ms (complete); P=0.046]. The PCL subregions and texture variables showed variable changes indicative of injury-associated disorganization. Conclusions:In contrast to the conventional T2* mapping, UTE-T2* mapping is more receptive in the detection of structural damage of the PCL and allows quantitative assessment of ligament (ultra-)structure and integrity that may help to improve diagnostic differentiation of distinct injury states. Once further substantiated beyond the in-situ setting, UTE-T2* mapping may refine diagnostic evaluation of PCL injuries and -possibly-monitor ligament healing, ageing, degeneration, and inflammation.

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