Quadriceps Strength Influences Patient Function More Than Single Leg Forward Hop During Late-Stage ACL Rehabilitation

# Background A comprehensive battery of tests are used to inform return to play decisions following anterior cruciate ligament (ACL) reconstruction. Performance measures contribute to patient function, but it is not clear if achieving symmetrical performance on strength and hop tests is sufficient o...

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Autores principales:	Meredith Chaput, Marcus Palimenio, Brooke Farmer, Dimitrios Katsavelis, Jennifer J. Bagwell, Kimberly A. Turman, Chris Wichman, Terry L. Grindstaff
Formato:	article
Lenguaje:	EN
Publicado:	North American Sports Medicine Institute 2021
Materias:	Sports medicine RC1200-1245
Acceso en línea:	https://doaj.org/article/bcf649a65d1144f2947c8a6212f3bb12
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spelling	oai:doaj.org-article:bcf649a65d1144f2947c8a6212f3bb122021-12-02T17:43:25ZQuadriceps Strength Influences Patient Function More Than Single Leg Forward Hop During Late-Stage ACL Rehabilitation10.26603/001c.187092159-2896https://doaj.org/article/bcf649a65d1144f2947c8a6212f3bb122021-02-01T00:00:00Zhttps://ijspt.scholasticahq.com/article/18709-quadriceps-strength-influences-patient-function-more-than-single-leg-forward-hop-during-late-stage-acl-rehabilitation.pdfhttps://doaj.org/toc/2159-2896# Background A comprehensive battery of tests are used to inform return to play decisions following anterior cruciate ligament (ACL) reconstruction. Performance measures contribute to patient function, but it is not clear if achieving symmetrical performance on strength and hop tests is sufficient or if a patient also needs to meet minimum unilateral thresholds. # Hypothesis/Purpose To determine the association of quadriceps strength and single-leg forward hop performance with patient-reported function, as measured by the IKDC Subjective Knee Form (IKDC), during late-stage ACL rehabilitation. A secondary purpose was to determine which clinical tests were the most difficult for participants to pass. # Study Design Descriptive Laboratory Study # Methods Forty-eight individuals with a history of ACL-R (32 female, 16 male; mean±SD age=18.0±2.7 y; height=172.4±7.6 cm; mass=69.6±11.4 kg; time since surgery=7.7±1.8 months; IKDC=86.8±10.6) completed the IKDC survey, quadriceps isometric strength, and single-leg forward hop performance. The relationship between IKDC scores and performance measures (LSI and involved limb) was determined using stepwise linear regression. Frequency counts were used to determine whether participants met clinical thresholds (IKDC $\geq$ 90%, quadriceps and single-leg forward hop LSI $\geq$ 90%, quadriceps peak torque $\geq$ 3.0 Nm/kg, and single-leg forward hop $\geq$ 80% height for females and $\geq$ 90% height for males). # Results Quadriceps LSI and involved limb peak torque explained 39% of the variance in IKDC scores while measures of single-leg forward hop performance did not add to the predictive model. Nearly 90% of participants could not meet established clinical thresholds on all five tests and quadriceps strength (LSI and peak torque) was the most common unmet criteria (71% of participants). # Conclusions During late-stage ACL rehabilitation deficits in quadriceps strength contribute more to patient function and are greater in magnitude compared to hop test performance. # Level of evidence Cross-Sectional Study, Level 3Meredith ChaputMarcus PalimenioBrooke FarmerDimitrios KatsavelisJennifer J. BagwellKimberly A. TurmanChris WichmanTerry L. GrindstaffNorth American Sports Medicine InstitutearticleSports medicineRC1200-1245ENInternational Journal of Sports Physical Therapy, Vol 16, Iss 1 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Sports medicine RC1200-1245
spellingShingle	Sports medicine RC1200-1245 Meredith Chaput Marcus Palimenio Brooke Farmer Dimitrios Katsavelis Jennifer J. Bagwell Kimberly A. Turman Chris Wichman Terry L. Grindstaff Quadriceps Strength Influences Patient Function More Than Single Leg Forward Hop During Late-Stage ACL Rehabilitation
description	# Background A comprehensive battery of tests are used to inform return to play decisions following anterior cruciate ligament (ACL) reconstruction. Performance measures contribute to patient function, but it is not clear if achieving symmetrical performance on strength and hop tests is sufficient or if a patient also needs to meet minimum unilateral thresholds. # Hypothesis/Purpose To determine the association of quadriceps strength and single-leg forward hop performance with patient-reported function, as measured by the IKDC Subjective Knee Form (IKDC), during late-stage ACL rehabilitation. A secondary purpose was to determine which clinical tests were the most difficult for participants to pass. # Study Design Descriptive Laboratory Study # Methods Forty-eight individuals with a history of ACL-R (32 female, 16 male; mean±SD age=18.0±2.7 y; height=172.4±7.6 cm; mass=69.6±11.4 kg; time since surgery=7.7±1.8 months; IKDC=86.8±10.6) completed the IKDC survey, quadriceps isometric strength, and single-leg forward hop performance. The relationship between IKDC scores and performance measures (LSI and involved limb) was determined using stepwise linear regression. Frequency counts were used to determine whether participants met clinical thresholds (IKDC $\geq$ 90%, quadriceps and single-leg forward hop LSI $\geq$ 90%, quadriceps peak torque $\geq$ 3.0 Nm/kg, and single-leg forward hop $\geq$ 80% height for females and $\geq$ 90% height for males). # Results Quadriceps LSI and involved limb peak torque explained 39% of the variance in IKDC scores while measures of single-leg forward hop performance did not add to the predictive model. Nearly 90% of participants could not meet established clinical thresholds on all five tests and quadriceps strength (LSI and peak torque) was the most common unmet criteria (71% of participants). # Conclusions During late-stage ACL rehabilitation deficits in quadriceps strength contribute more to patient function and are greater in magnitude compared to hop test performance. # Level of evidence Cross-Sectional Study, Level 3
format	article
author	Meredith Chaput Marcus Palimenio Brooke Farmer Dimitrios Katsavelis Jennifer J. Bagwell Kimberly A. Turman Chris Wichman Terry L. Grindstaff
author_facet	Meredith Chaput Marcus Palimenio Brooke Farmer Dimitrios Katsavelis Jennifer J. Bagwell Kimberly A. Turman Chris Wichman Terry L. Grindstaff
author_sort	Meredith Chaput
title	Quadriceps Strength Influences Patient Function More Than Single Leg Forward Hop During Late-Stage ACL Rehabilitation
title_short	Quadriceps Strength Influences Patient Function More Than Single Leg Forward Hop During Late-Stage ACL Rehabilitation
title_full	Quadriceps Strength Influences Patient Function More Than Single Leg Forward Hop During Late-Stage ACL Rehabilitation
title_fullStr	Quadriceps Strength Influences Patient Function More Than Single Leg Forward Hop During Late-Stage ACL Rehabilitation
title_full_unstemmed	Quadriceps Strength Influences Patient Function More Than Single Leg Forward Hop During Late-Stage ACL Rehabilitation
title_sort	quadriceps strength influences patient function more than single leg forward hop during late-stage acl rehabilitation
publisher	North American Sports Medicine Institute
publishDate	2021
url	https://doaj.org/article/bcf649a65d1144f2947c8a6212f3bb12
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Quadriceps Strength Influences Patient Function More Than Single Leg Forward Hop During Late-Stage ACL Rehabilitation

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