Anterior cruciate ligament deficiency reduces walking economy in “copers” and “non-copers”

Iliopoulos, Efthymios; Galanis, Nikiforos; Iosifidis, Michael; Zafeiridis, Andreas; Papadopoulos, Pericles; Potoupnis, Michael; Geladas, Nickos D.; Vrabas, Ioannis S.; Kirkos, John M.

doi:10.1007/s00167-015-3709-2

Cited by 12 publications

(8 citation statements)

References 45 publications

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“…In support of our findings, another recent study documented a similar reduction in walking efficiency in a different set of ACL-deficient patients [22]. A previous study also demonstrated 8 % decreased economy in patients with ACL deficiency during jogging, but not during flat walking [30].…”

Section: Energy Cost In Acl-deficient Patientssupporting

confidence: 91%

“…Apart from the adverse effects on joint laxity and kinematics, ACL deficiency may also decrease metabolic economy (i.e. increase energy demands) during locomotion [22, 30]. It has been suggested that ACL‐deficient patients increase their muscle contractions (thereby increasing the energy cost) in an effort to avoid abnormal anterolateral rotatory laxity during locomotion [20, 28].…”

Section: Introductionmentioning

confidence: 99%

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Anatomic single-bundle anterior cruciate ligament reconstruction improves walking economy: hamstrings tendon versus patellar tendon grafts

Iliopoulos

Galanis

Zafeiridis

et al. 2016

Knee Surg Sports Traumatol Arthrosc

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Section: Energy Cost In Acl-deficient Patientssupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Anatomic single-bundle anterior cruciate ligament reconstruction improves walking economy: hamstrings tendon versus patellar tendon grafts

Iliopoulos

Galanis

Zafeiridis

et al. 2016

Knee Surg Sports Traumatol Arthrosc

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“…Therefore, a timely diagnosis of unstable syndesmosis ankle and ACL knee injuries is essential. Until today, no predictive clinical knee or ankle tools are available to differentiate 'copers' from 'non copers' [12]. Bearing these consequences of chronic instability in mind, ACL knee reconstruction is the current treatment of choice in the active patient with reproducible and good-to-excellent results.…”

Section: Treatment and Outcomementioning

confidence: 99%

The ankle syndesmosis pivot shift “Are we reviving the ACL story?”

Tampere

D’Hooghe

2020

Knee Surg Sports Traumatol Arthrosc

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In recent literature, there is a growing interest for the high ankle sprain with emerging evidence on biomechanical behavior, function, injury, and treatment. Interpretation of emerging publications on the distal tibiofibular syndesmosis may raise questions about striking similarities with the anterior cruciate ligament function and pivot-shift mechanism of injury in the knee. This editorial note puts to question whether identical entities, a continuum or separate injuries are faced by contemplating on the mechanism of injury, diagnostics, treatment, and outcome.

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“…The methodology described in this study is expected to provide the clinicians with an efficient tool for assisted diagnosis of ACL-D knees. In comparison to other methods reported in [ 15 , 16 , 20 , 24 , 59 – 61 ], the proposed method focuses not only on providing evidence to support the claim that ACL-D knees demonstrate altered gait patterns compared to ACL-I knees, but also on providing an automatic and objective method to distinguish between patients with ACL-D knees and healthy controls with ACL-I knees. Almosnino et al [ 15 ] aimed to identify, using Principal Component Analysis, strength curve features that explain the majority of variation between the injured and uninjured knee, and to assess the capabilities of these features to detect the presence of injury.…”

Section: Discussionmentioning

confidence: 99%

Modeling and classification of gait patterns between anterior cruciate ligament deficient and intact knees based on phase space reconstruction, Euclidean distance and neural networks

Zeng

et al. 2018

BioMed Eng OnLine

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BackgroundThe anterior cruciate ligament (ACL) plays an important role in stabilizing translation and rotation of the tibia relative to the femur. ACL injury alters knee kinematics and usually links to the alternation of gait patterns. The aim of this study is to develop a new method to distinguish between gait patterns of patients with anterior cruciate ligament deficient (ACL-D) knees and healthy controls with ACL-intact (ACL-I) knees based on nonlinear features and neural networks. Therefore ACL injury will be automatically and objectively detected.MethodsFirst knee rotation and translation parameters are extracted and phase space reconstruction (PSR) is employed. The properties associated with the gait system dynamics are preserved in the reconstructed phase space. For the purpose of classification of ACL-D and ACL-I knee gait patterns, three-dimensional (3D) PSR together with Euclidean distance computation has been used. These measured parameters show significant difference in gait dynamics between the two groups and have been utilized to form a feature set. Neural networks are then constructed to identify gait dynamics and are utilized as the classifier to distinguish between ACL-D and ACL-I knee gait patterns based on the difference of gait dynamics between the two groups.ResultsExperiments are carried out on a database containing 18 patients with ACL injury and 28 healthy controls to assess the effectiveness of the proposed method. By using the twofold and leave-one-subject-out cross-validation styles, the correct classification rates for ACL-D and ACL-I knees are reported to be 91.3 and 95.65, respectively.ConclusionCompared with other state-of-the-art methods, the results demonstrate that gait alterations in the presence of ACL deficiency can be detected with superior performance. The proposed method is a potential candidate for the automatic and non-invasive classification between patients with ACL deficiency and healthy subjects.

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Anterior cruciate ligament deficiency reduces walking economy in “copers” and “non-copers”

Abstract: II.

Cited by 12 publications

References 45 publications

Anatomic single-bundle anterior cruciate ligament reconstruction improves walking economy: hamstrings tendon versus patellar tendon grafts

Anatomic single-bundle anterior cruciate ligament reconstruction improves walking economy: hamstrings tendon versus patellar tendon grafts

The ankle syndesmosis pivot shift “Are we reviving the ACL story?”

Modeling and classification of gait patterns between anterior cruciate ligament deficient and intact knees based on phase space reconstruction, Euclidean distance and neural networks

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