Predictive parameters for return to pre-injury level of sport 6 months following anterior cruciate ligament reconstruction surgery

Müller, Ulrike; Krüger-Franke, Michael; Schmidt, Michael; Rosemeyer, B.

doi:10.1007/s00167-014-3261-5

Cited by 166 publications

(161 citation statements)

References 48 publications

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“…Pietrosimone et al 4 observed larger correlations (r ¼ 0.78) and stronger predictability (R 2 ¼ 0.61) between strength and IKDC scores in patients who had undergone ACL-R. Their ACL-R cohort reported levels of disability (IKDC score ¼ 86.1 6 8.9) and postoperative time (4.5 6 3.4 years) similar to those in our study; yet their peak torque values (2.73 6 0.57 Nm) were higher and their sample size (n ¼ 15) was smaller. 4 Multiple variables may contribute to subjective knee function after ACL-R, including psychological factors, 31 surgical technique, 32 associated knee damage, 33 activity demands, 34 and overall health of the patient. 35 The results of our predictive model indicated that as months after surgery increased (ranging from 6 to 107 months [8.9 years]), subjective knee function increased.…”

Section: Discussionmentioning

confidence: 99%

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

Goetschius¹,

Hart

2016

Journal of Athletic Training

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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 selfreported 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 ¼ 23.4 6 4.9 years, height ¼ 1.7 6 0.1 m, mass ¼ 74.6 6 14.8 kg) and 50 individuals with no history of substantial lower extremity injury or surgery who served as controls (age ¼ 23.3 6 4.4 years, height ¼ 1.7 6 0.1 m, mass ¼ 67.4 6 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 (908 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 , .05). Torque variability and strength were correlated with IKDC scores (P , .05). Torque variability, strength, and CAR were correlated with each other (P , .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.

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Section: Discussionmentioning

confidence: 99%

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

Goetschius¹,

Hart

2016

Journal of Athletic Training

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“…The ACL-RSI was shown to help to identify patients who return to sport and who do not (10). Muller et al showed that ACL-RSI scale was the strongest predictive parameter of RTS at 6 months following ACLR (14). It was suggested that addressing the patients' fear of re-injury during early phase of the postoperative rehabilitation might decrease its impact on knee functions (15).…”

Section: Introductionmentioning

confidence: 99%

Relation of Self-Reported Knee Function and Physical Performance with Psychological Responses in Anterior Cruciate Ligament Reconstructed Individuals

Harput¹,

Tok²,

Tunay³

2016

Türk Fizyoterapi Ve Rehabilitasyon Dergisi

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Purpose: The aim of this study was to investigate the correlation between anterior cruciate ligament return to sport index after injury (ACL-RSI) score and self-reported knee function, and physical performance in anterior cruciate ligament reconstructed individuals.Methods: Ninety ACL reconstructed individuals at 6 months post-surgery were included in this study. To evaluate psychological responses, ACL-RSI score; and to assess self-reported knee function, International Knee Documentation Committee Subjective Knee Form (IKDC), Knee Injury and Osteoarthritis Outcome (KOOS) and Lysholm scores were selected. One leg hop test and anterior, posteromedial and posterolateral reach distances of star excursion balance test were used to measure physical performance. Pearson correlation test was used for statistical analysis.Results: ACL-RSI score was positively correlated with IKDC, Lysholm and KOOS scores; one leg hop test; and posteromedial and posterolateral reach distances of the star excursion balance test (p<0.05).Discussion: Psychological responses were correlated with self-reported knee function and physical performance in anterior cruciate ligament reconstructed individuals. Therefore, maximizing knee function and performance is important to overcome individuals' fear of re-injury which affects return to sport after surgery, negatively. Tartışma: Ön çapraz bağ cerrahisi geçirmiş bireylerde psikolojik yanıt hasta bildirimli diz fonksiyonu ve fiziksel performansla ilişkili bulundu. Bu nedenle, ön çapraz bağ cerrahisi sonrası bireylerin spora dönüşünü olumsuz yönde etkileyen tekrar yaralanma korkusunu yenmeleri için diz fonksiyonunun ve performansın arttırılması önemlidir.

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“…71 Although patient-reported outcomes provide valuable information about strength and functional performance, 2,64,119,137,208 time from surgery remains the only criterion to return someone to unrestricted activity. 16 Most patients are returned to sport between 6-8 months after reconstruction, 16 which is concerning given the decreased quadriceps strength, quadriceps activation, and functional performance during this time period.…”

Section: Return To Activity Assessmentsmentioning

confidence: 99%

“…16 Most patients are returned to sport between 6-8 months after reconstruction, 16 which is concerning given the decreased quadriceps strength, quadriceps activation, and functional performance during this time period. 47,73,137,141,175,191,192 Even quadriceps strength deficits around 15%…”

Section: Return To Activity Assessmentsmentioning

confidence: 99%

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Biomechanical Adaptations After Fatiguing Exercise in Healthy and ACL Reconstructed Individuals

Slater

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Predictive parameters for return to pre-injury level of sport 6 months following anterior cruciate ligament reconstruction surgery

Abstract: II.

Cited by 166 publications

References 48 publications

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

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

Relation of Self-Reported Knee Function and Physical Performance with Psychological Responses in Anterior Cruciate Ligament Reconstructed Individuals

Biomechanical Adaptations After Fatiguing Exercise in Healthy and ACL Reconstructed Individuals

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