The Relationship Between Injury-Related Fear and Visuomotor Reaction Time in Individuals With a History of Anterior Cruciate Ligament Reconstruction

2020 ◽  
pp. 1-7
Author(s):  
Francesca Genoese ◽  
Shelby E. Baez ◽  
Nicholas Heebner ◽  
Matthew C. Hoch ◽  
Johanna M. Hoch
Keyword(s):  
Anterior Cruciate Ligament ◽  
Reaction Time ◽  
Lower Extremity ◽  
Cruciate Ligament ◽  
Knee Function ◽  
Fear Avoidance ◽  
Injured Limb ◽  
History Of ◽  
Anterior Cruciate ◽  
The Relationship

Context: Deficits in reaction time, decreased self-reported knee function, and elevated levels of injury-related fear have been observed in individuals who sustain anterior cruciate ligament injury. Understanding the relationship between these variables may provide the impetus to further investigate effective intervention strategies to address these deficits in individuals after anterior cruciate ligament reconstruction (ACLR). Objective: To examine the relationship between injury-related fear and lower-extremity visuomotor reaction time (VMRT) in individuals with a history of ACLR. A secondary purpose was to determine the relationship between self-reported knee function and lower-extremity VMRT in individuals with a history of ACLR. Design: Cross-sectional study. Setting: Laboratory. Participants: Twenty participants between the ages of 18–35 years, with history of unilateral ACLR within the last 10 years, who injured their knee playing or training for organized or recreational sports. Main Outcome Measures: Scores on the athlete fear avoidance questionnaire, the fear-avoidance beliefs questionnaire (FABQ), the knee injury and osteoarthritis outcome score, and reaction time (in seconds) on the lower-extremity VMRT task using the FitLight Trainer™, bilaterally. Spearman Rho correlations examined the relationship between the dependent variables. Results: There was a moderate positive correlation between VMRT and FABQ-total (r = .62, P < .01), FABQ-sport (r = .56, P = .01), and FABQ-physical activity (r = .64, P < .01) for the injured limb. Correlations between FABQ scores and VMRT for the uninjured limb were weak positive correlations (r = .36–.41, P > .05). Weak correlations between the osteoarthritis outcome score subscales, athlete fear avoidance questionnaire, and VMRT were observed for the injured limb (P > .05). Conclusions: Individuals with a history of ACLR who exhibited elevated levels of injury-related fear demonstrated slower VMRT. There were no relationships between self-reported knee function and VMRT. Future research should explore interventions to address injury-related fear and VMRT in individuals after ACLR.

Examining the Relationship Between a Neuromuscular Control Baseline Battery for Sport-Related Concussion and Anterior Cruciate Ligament Injury Risk

Neurology ◽  
2021 ◽  
Vol 98 (1 Supplement 1) ◽  
pp. S21.2-S22
Author(s):  
Ryan Moran
Keyword(s):  
Anterior Cruciate Ligament ◽  
Lower Extremity ◽  
Cruciate Ligament ◽  
Neuromuscular Control ◽  
Ligament Injury ◽  
Jump Landing ◽  
Eyes Closed ◽  
Eyes Open ◽  
Anterior Cruciate ◽  
The Relationship

ObjectiveTo examine the relationship between the m-CTSIB and Landing Error Scoring System in a sample of collegiate female athletes.BackgroundRecent literature has linked concussion and neuromuscular deficits in the lower extremity after injury. Neuromuscular control is frequently assessed using balance measures for concussion, but also dynamically to identify anterior cruciate ligament injury (ACL) risk via jump-landing movement screening.Design/MethodsThirty-nine healthy, collegiate female soccer (n = 22) and volleyball (n = 17) athletes completed the modified-Clinical Test of Sensory Interaction of Balance (m-CTSIB) and the Landing Error Scoring System (LESS). Measures consisted of total m-CTSIB sway index scores on individual conditions (firm surface eyes open [condition 1] and eyes closed [2], foam surface eyes open [3] and eyes closed [4]), m-CTSIB overall score, and total LESS errors. LESS scores were also categorized into a low (0–4 errors) and high (5 + errors) risk to determine if athletes with worse neuromuscular control on the LESS has worse balance on the m-CTSIB. A Spearman's rank-order correlation was conducted to determine the strength of the relationship between LESS and m-CTSIB performance. A series of Mann-Whitney U test were performed to determine differences between low and high LESS performance on m-CTSIB performance.ResultsThere was a weak, negative correlation between LESS and m-CTSIB performance (rs(37) = −0.153, p = 0.35). Further, there were no differences between the low and high risk LESS groups on sway index scores on conditions 1 (U = 158.5, p = 0.39), 2 (U = 156.0, p = 0.36), 3 (U = 165.5, p = 0.51), or 4 (U = 128.5, p = 0.08), as well as overall m-CTSIB scores (U = 150.5, p = 0.28).ConclusionsThere appears to be a lack of relationship between the LESS and m-CTSIB tests, revealing the independence of static and dynamic lower extremity neuromuscular function. Athletes who may be more at risk for ACL injury due to abnormal jump-landing biomechanics, do not differ from low-risk athletes on baseline balance assessment.

scholarly journals Knee-Extension Torque Variability and Subjective Knee Function in Patients With a History of Anterior Cruciate Ligament Reconstruction

2016 ◽  
Vol 51 (1) ◽  
pp. 22-27 ◽  
Author(s):  
John Goetschius ◽  
Joseph M. Hart
Keyword(s):  
Anterior Cruciate Ligament ◽  
Motor Control ◽  
Anterior Cruciate Ligament Reconstruction ◽  
Ligament Reconstruction ◽  
Cruciate Ligament ◽  
Knee Extension ◽  
Knee Function ◽  
Cruciate Ligament Reconstruction ◽  
History Of ◽  
Anterior Cruciate

Context  When returning to physical activity, patients with a history of anterior cruciate ligament reconstruction (ACL-R) often experience limitations in knee-joint function that may be due to chronic impairments in quadriceps motor control. Assessment of knee-extension torque variability may demonstrate underlying impairments in quadriceps motor control in patients with a history of ACL-R. Objective  To identify differences in maximal isometric knee-extension torque variability between knees that have undergone ACL-R and healthy knees and to determine the relationship between knee-extension torque variability and self-reported knee function in patients with a history of ACL-R. Design  Descriptive laboratory study. Setting  Laboratory. Patients or Other Participants  A total of 53 individuals with primary, unilateral ACL-R (age = 23.4 ± 4.9 years, height = 1.7 ± 0.1 m, mass = 74.6 ± 14.8 kg) and 50 individuals with no history of substantial lower extremity injury or surgery who served as controls (age = 23.3 ± 4.4 years, height = 1.7 ± 0.1 m, mass = 67.4 ± 13.2 kg). Main Outcome Measure(s)  Torque variability, strength, and central activation ratio (CAR) were calculated from 3-second maximal knee-extension contraction trials (90° of flexion) with a superimposed electrical stimulus. All participants completed the International Knee Documentation Committee (IKDC) Subjective Knee Evaluation Form, and we determined the number of months after surgery. Group differences were assessed using independent-samples t tests. Correlation coefficients were calculated among torque variability, strength, CAR, months after surgery, and IKDC scores. Torque variability, strength, CAR, and months after surgery were regressed on IKDC scores using stepwise, multiple linear regression. Results  Torque variability was greater and strength, CAR, and IKDC scores were lower in the ACL-R group than in the control group (P &lt; .05). Torque variability and strength were correlated with IKDC scores (P &lt; .05). Torque variability, strength, and CAR were correlated with each other (P &lt; .05). Torque variability alone accounted for 14.3% of the variance in IKDC scores. The combination of torque variability and number of months after surgery accounted for 21% of the variance in IKDC scores. Strength and CAR were excluded from the regression model. Conclusions  Knee-extension torque variability was moderately associated with IKDC scores in patients with a history of ACL-R. Torque variability combined with months after surgery predicted 21% of the variance in IKDC scores in these patients.

Anterior Cruciate Ligament Rupture Associated with Cardiomyopathy in Three Cats

1991 ◽  
Vol 4 (01) ◽  
pp. 35-37 ◽  
Author(s):  
G. O. Janssens ◽  
D. L. Janssens ◽  
L. A. A. Janssens
Keyword(s):  
Anterior Cruciate Ligament ◽  
Cruciate Ligament ◽  
Anterior Cruciate Ligament Rupture ◽  
Acl Rupture ◽  
Thoracic Radiography ◽  
Ligament Rupture ◽  
Cruciate Ligament Rupture ◽  
Previous Trauma ◽  
History Of ◽  
Anterior Cruciate

SummaryOver a period of 14 years, three cats with anterior cruciate ligament (ACL) rupture were seen in our practice. In all, the rupture had occurred without a history of previous trauma. All were treated surgically. All died within a period of 14 days. The reason of death was in all cases cardiomyopathy. We now suggest that cats with rupture of the anterior cruciate ligament undergo an electrocardiographic recording and eventually an thoracic radiography before surgery is considered. We also suggest that cats with ACL rupture should preferably be treated conservatively.

Measuring the force perception in knee flexor/ extensor muscles in patients with anterior cruciate ligament injury and healthy subjects

2021 ◽  
pp. 1-8
Author(s):  
Bahram Amirshakeri ◽  
Minoo Khalkhali Zavieh ◽  
Mandana Rezaei ◽  
Hakimeh Adigozali
Keyword(s):  
Anterior Cruciate Ligament ◽  
Healthy Subjects ◽  
Cruciate Ligament ◽  
Acl Injury ◽  
Injured Limb ◽  
Knee Flexor ◽  
Force Perception ◽  
Extensor Muscles ◽  
Anterior Cruciate ◽  
Flexion And Extension

BACKGROUND: Force perception as a contributor to the neuromuscular control of the knee joint may be altered after anterior cruciate ligament (ACL) injury. OBJECTIVE: This study aimed to compare the force perception accuracy in the knee joints of patients with ACL injury and healthy subjects. METHODS: Twenty-six patients with ACL injury and 26 healthy subjects participated in this case-control study. Participants were asked to produce 50% of the maximum voluntary isometric contraction of the knee muscles as a target force and reproduce it in their limbs in flexion and extension directions. RESULTS: There were significant interactions between group and condition as well as group, condition, and limb in the force perception error respectively (P< 0.05). The highest amount of error was seen in the contralateral limb of the ACL injury group when the reference force was produced in the injured limb (P< 0.05). CONCLUSION: The findings revealed that the force perception accuracy in the knee flexor/extensor muscles of individuals with ACL injury is impaired. Moreover, error is most evident when the patient produces force in the injured limb and replicates it in the uninjured limb in both flexion and extension directions. Therefore, the rehabilitation programs should encompass neuromuscular training in both quadriceps and hamstrings after ACL injury.

Sign in / Sign up

Export Citation Format

Share Document