Leg-amplitude differentiation guided by haptic and visual feedback to detect alterations in motor flexibility due to Total Knee Replacement

Roelofsen, Eefje G.J.; Cingel, Robert van; Pronk, Yvette; Staal, J. Bart; Sanden, Maria W. G. Nijhuis-van der; Meulenbroek, Ruud G. J.

doi:10.1016/j.humov.2020.102623

Cited by 2 publications

(5 citation statements)

References 46 publications

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“…In line with our expectations, we found SEn increasing during recovery, indicating less predictable movement behavior of the legs 6 and 12 months post-TKA. Our findings are in contrast with the findings of Roelofsen et al [ 20 ], who hardly found any differences in SEn 18–20 weeks post-TKA. An explanation for the differences in results could be related to the usage of the CWS after TKA.…”

Section: Discussioncontrasting

confidence: 99%

“…An explanation for the differences in results could be related to the usage of the CWS after TKA. Roelofsen et al [ 20 ] used the same CWS pre-TKA and post-TKA, whereas in our study the CWS was determined at every time point in the recovery. Six months post-TKA, we found an increased CWS and previous studies showed that higher walking speeds elicited larger SEn [ 23 , 51 , 52 ].…”

Section: Discussionmentioning

confidence: 99%

“…Various gait characteristics are typical for KO, such as a lower walking speed [ 2 , 3 , 6 , 17 , 18 , 19 , 20 ] and lower scores in walking tests including the 6 minute walking test (6 MWT) and timed up-and-go test (TUGT) [ 21 , 22 ]. Patients coping with KO display larger knee stiffness during walking [ 18 ], lower variability in the angular velocity of the sagittal knee movements in both the affected and non-affected leg [ 2 , 3 ], and more predictable movement behavior of the shank [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

“…Decreased variability in sagittal knee movements in both the affected and non-affected leg was still present one year after TKA and has been proved to remain lower when compared to healthy peers [ 2 ]. Furthermore, hardly any difference in movement predictability in the sagittal plane of motion during walking was found 6 months after TKA [ 20 ]. Finally, despite improved angular velocities of the knee joint during the stance phase 12 to 18 months after TKA, TKA patients show lower angular velocities in the stance phase compared with healthy peers [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

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Inertial-Sensor-Based Monitoring of Sample Entropy and Peak Frequency Changes in Treadmill Walking during Recovery after Total Knee Arthroplasty

Ven

Bosga

Hullegie³

et al. 2023

Sensors

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This study aimed to investigate whether sample entropy (SEn) and peak frequency values observed in treadmill walking could provide physical therapists valuable insights into gait rehabilitation following total knee arthroplasty (TKA). It was recognized that identifying movement strategies that during rehabilitation are initially adaptive but later start to hamper full recovery is critical to meet the clinical goals and minimize the risk of contralateral TKA. Eleven TKA patients were asked to perform clinical walking tests and a treadmill walking task at four different points in time (pre-TKA, 3, 6, and 12 months post-TKA). Eleven healthy peers served as the reference group. The movements of the legs were digitized with inertial sensors and SEn and peak frequency of the recorded rotational velocity–time functions were analyzed in the sagittal plane. SEn displayed a systematic increase during recovery in TKA patients (p < 0.001). Furthermore, lower peak frequency (p = 0.01) and sample entropy (p = 0.028) were found during recovery for the TKA leg. Movement strategies that initially are adaptive, and later hamper recovery, tend to diminish after 12 months post-TKA. It is concluded that inertial-sensor-based SEn and peak frequency analyses of treadmill walking enrich the assessment of movement rehabilitation after TKA.

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confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Inertial-Sensor-Based Monitoring of Sample Entropy and Peak Frequency Changes in Treadmill Walking during Recovery after Total Knee Arthroplasty

Ven

Bosga

Hullegie³

et al. 2023

Sensors

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“…Therefore, the present study aims: 1) to evaluate the lower-limb motor-flexibility of patients before and after ACLR during a treadmillbased walking task and a Leg-Amplitude Differentiation task (LADtask (EGJ et al, 2016;Roelofsen et al, 2020): see Appendix), and 2) to investigate to which extent FoH was associated with altered motor-flexibility. Outcome measures were between-leg stability (SD of relative phase between the legs), and temporal variability (sample entropy).…”

Section: Introductionmentioning

confidence: 99%

Changes in motor-flexibility following anterior cruciate ligament reconstruction as measured by means of a leg-amplitude differentiation task with haptic and visual feedback

Roelofsen

Cingel

Staal

et al. 2020

Clinical Biomechanics

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Background: In the current study changes in lower-limb motor flexibility of patients undergoing Anterior Cruciate Ligament Reconstruction were evaluated in relation to fear of harm. Methods: Fourteen patients were measured pre-and post-surgery, and data were compared to those of a single measurement in fifteen controls. Lower-limb motor-flexibility was assessed in treadmill-walking and a cyclic legamplitude differentiation task augmented with haptic or visual feedback. Flexibility was captured by determining the between-leg coordination-variability (SD of relative phase) and each leg's temporal variability (sample entropy). Patients were post hoc divided into a higher-fear-group (pre-surgery: n = 6, post-surgery: n = 7) and a lower-fear-group (pre-surgery: n = 6, post-surgery: n = 7) by means of a median split of their scores on a self-reported fear of harm scale. Differences in flexibility-measures between the higher-fear-group and the lowerfear-group were also assessed. Findings: No pre-and post-surgery differences, nor differences with the control group, were found in motorflexibility during treadmill-walking but the post-surgery higher-fear-group did show lower values of SD relative phase. In the leg-amplitude differentiation task the SD of the relative phase decreased but sample entropy increased post-surgery towards levels of the control-group. The pre-surgery higher-fear-group showed lower values of sample entropy in visual conditions. Interpretation: While gait kinematics may not show motor-flexibility changes following anterior cruciate ligament reconstruction, a leg-amplitude differentiation task does show such changes. Differentiating patients on a fear-ofharm scale revealed subtle differences in motor-flexibility. Challenging patients with non-preferred movements such as amplitude differentiation may be a promising tool to evaluate motor-flexibility following ACLR.

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Leg-amplitude differentiation guided by haptic and visual feedback to detect alterations in motor flexibility due to Total Knee Replacement

Cited by 2 publications

References 46 publications

Inertial-Sensor-Based Monitoring of Sample Entropy and Peak Frequency Changes in Treadmill Walking during Recovery after Total Knee Arthroplasty

Inertial-Sensor-Based Monitoring of Sample Entropy and Peak Frequency Changes in Treadmill Walking during Recovery after Total Knee Arthroplasty

Changes in motor-flexibility following anterior cruciate ligament reconstruction as measured by means of a leg-amplitude differentiation task with haptic and visual feedback

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