Evaluation of postural stability after reconstruction of anterior cruciate ligament (ACL) in juveniles using Biodex Balance System

2012 ◽  
Vol 36 ◽  
pp. S89
Author(s):  
J. Goetz ◽  
S. Dullien ◽  
P. Lenz ◽  
J. Grifka ◽  
H. Eichhorn ◽  
...  
Keyword(s):  
Anterior Cruciate Ligament ◽  
Postural Stability ◽  
Cruciate Ligament ◽  
Balance System ◽  
Anterior Cruciate ◽  
Biodex Balance System

The Effects of Instruction Exercises on Performance and Kinetic Factors Associated With Lower-Extremity Injury in Landing After Volleyball Blocks

2020 ◽  
Vol 29 (1) ◽  
pp. 51-64
Author(s):  
Anis Rostami ◽  
Amir Letafatkar ◽  
Alli Gokeler ◽  
Mehdi Khaleghi Tazji
Keyword(s):  
Anterior Cruciate Ligament ◽  
Anterior Cruciate Ligament Injury ◽  
Postural Stability ◽  
Cruciate Ligament ◽  
Stability Index ◽  
Lower Extremity Injury ◽  
Ligament Injury ◽  
Hop Test ◽  
Anterior Cruciate ◽  
Dynamic Postural Stability

Context: Female volleyball players are more predisposed to anterior cruciate ligament injury in comparison with their male counterparts. Recent research on anterior cruciate ligament injury prevention strategies has shown the positive results of adopting the external focus (EF) of attention in sports. Objective: To determine the effect of 6-week EF instruction exercises on performance and kinetic factors associated with lower-extremity injury in landing after the volleyball blocks of female athletes. Design: Pretest and posttest control study. Setting: University research laboratory. Participants: Thirty-two female volleyball players (18–24 y old) from the same team randomly divided into experimental (n = 16) and control (n = 16) groups. Intervention: The experimental group performed a 6-week exercise program with EF instructions. The control group continued its regular volleyball team schedule. Main Outcome Measures: To assess function, single-leg triple hop test for distance was used. A force plate was used to evaluate kinetic variables including vertical ground reaction forces, the rate of loading, and dynamic postural stability index. All data were assessed at baseline and after the intervention. Results: There was a significant increase in single-leg triple hop test (P < .05) and in the first and second peak ground reaction force, rate of loadings, dynamic postural stability index (P < .05). Conclusion: According to the results of this study, anterior cruciate ligament injury prevention programs should incorporate EF instruction exercises to enhance the kinetics and to increase athletes’ functional performance.

Reliability of Center of Pressure Measures of Postural Stability in Patients With Unilateral Anterior Cruciate Ligament Injury

2008 ◽  
Vol 8 (17) ◽  
pp. 3019-3025 ◽  
Author(s):  
Mohammad Reza Hadian ◽  
Hossein Negahban ◽  
Saeed Talebian ◽  
Mahyar Salavati ◽  
Amir Homayoun Jafari ◽  
...  
Keyword(s):  
Anterior Cruciate Ligament ◽  
Anterior Cruciate Ligament Injury ◽  
Postural Stability ◽  
Center Of Pressure ◽  
Cruciate Ligament ◽  
Ligament Injury ◽  
Anterior Cruciate

Postural stability during the transition from double-leg stance to single-leg stance in anterior cruciate ligament injured subjects

2015 ◽  
Vol 30 (3) ◽  
pp. 283-289 ◽  
Author(s):  
Bart Dingenen ◽  
Luc Janssens ◽  
Thomas Luyckx ◽  
Steven Claes ◽  
Johan Bellemans ◽  
...  
Keyword(s):  
Anterior Cruciate Ligament ◽  
Postural Stability ◽  
Cruciate Ligament ◽  
Single Leg Stance ◽  
Anterior Cruciate

scholarly journals Functional Cortical Connectivity Related to Postural Control in Patients Six Weeks After Anterior Cruciate Ligament Reconstruction

2021 ◽  
Vol 15 ◽  
Author(s):  
Tim Lehmann ◽  
Daniel Büchel ◽  
Caroline Mouton ◽  
Alli Gokeler ◽  
Romain Seil ◽  
...  
Keyword(s):  
Anterior Cruciate Ligament ◽  
Functional Connectivity ◽  
Anterior Cruciate Ligament Reconstruction ◽  
Postural Control ◽  
Postural Stability ◽  
Ligament Reconstruction ◽  
Cruciate Ligament ◽  
Phase Lag ◽  
Cruciate Ligament Reconstruction ◽  
Anterior Cruciate

Whereas initial findings have already identified cortical patterns accompanying proprioceptive deficiencies in patients after anterior cruciate ligament reconstruction (ACLR), little is known about compensatory sensorimotor mechanisms for re-establishing postural control. Therefore, the aim of the present study was to explore leg dependent patterns of cortical contributions to postural control in patients 6 weeks following ACLR. A total of 12 patients after ACLR (25.1 ± 3.2 years, 178.1 ± 9.7 cm, 77.5 ± 14.4 kg) and another 12 gender, age, and activity matched healthy controls participated in this study. All subjects performed 10 × 30 s. single leg stances on each leg, equipped with 64-channel mobile electroencephalography (EEG). Postural stability was quantified by area of sway and sway velocity. Estimations of the weighted phase lag index were conducted as a cortical measure of functional connectivity. The findings showed significant group × leg interactions for increased functional connectivity in the anterior cruciate ligament (ACL) injured leg, predominantly including fronto−parietal [F(1, 22) = 8.41, p ≤ 0.008, η2 = 0.28], fronto−occipital [F(1, 22) = 4.43, p ≤ 0.047, η2 = 0.17], parieto−motor [F(1, 22) = 10.30, p ≤ 0.004, η2 = 0.32], occipito−motor [F(1, 22) = 5.21, p ≤ 0.032, η2 = 0.19], and occipito−parietal [F(1, 22) = 4.60, p ≤ 0.043, η2 = 0.17] intra−hemispherical connections in the contralateral hemisphere and occipito−motor [F(1, 22) = 7.33, p ≤ 0.013, η2 = 0.25] on the ipsilateral hemisphere to the injured leg. Higher functional connectivity in patients after ACLR, attained by increased emphasis of functional connections incorporating the somatosensory and visual areas, may serve as a compensatory mechanism to control postural stability of the injured leg in the early phase of rehabilitation. These preliminary results may help to develop new neurophysiological assessments for detecting functional deficiencies after ACLR in the future.

scholarly journals Postural Stability and Responses to Vibrations in Patients After Anterior Cruciate Ligament Surgical Reconstruction

2016 ◽  
pp. S409-S416 ◽  
Author(s):  
Z. HIRJAKOVÁ ◽  
H. ŠINGLIAROVÁ ◽  
D. BZDÚŠKOVÁ ◽  
J. KIMIJANOVÁ ◽  
K. BUČKOVÁ ◽  
...  
Keyword(s):  
Anterior Cruciate Ligament ◽  
Postural Stability ◽  
Cruciate Ligament ◽  
Quadriceps Femoris ◽  
Triceps Surae ◽  
Surgical Reconstruction ◽  
Eyes Closed ◽  
Postural Changes ◽  
Eyes Open ◽  
Anterior Cruciate

The aim of the study was to evaluate the effect of surgical reconstruction of anterior cruciate ligament (ACL) on postural stability and responses to lower limb (LL) muscles vibrations. Centre of pressure (CoP) was measured in 17 subjects during stance on firm/foam surface with eyes open/closed and during unilateral vibrations of LL muscles (m. triceps surae – TS, m. quadriceps femoris – Q, m. quadriceps femoris and hamstrings simultaneously – QH). The measurements were performed: 1) preoperatively, 2) six weeks and 3) three months after the reconstruction. Decreased postural stability was documented six weeks after the reconstruction compared to preoperative measurement. Three months after the reconstruction significant improvement was observed during stance on foam surface with eyes closed. Preoperatively, altered reactions of LL with ACL lesion compared to intact LL were manifested by slower response in first 3 s of TS vibration and by increased CoP shift in last 5 s of QH vibration. After the reconstruction, we observed slower CoP reaction and decreased CoP shift during TS vibration of LL with ACL lesion compared to preoperative level. Posturography during quiet stance and during TS vibration reliably detect postural changes due to ACL reconstruction and can be potentially useful in clinical practice.

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