title: FUNCTIONAL PERFORMANCE AND KNEE LAXITY IN NORMAL INDIVIDUALS AND IN INDIVIDUALS SUBMITTED TO ANTERIOR CRUCIATE LIGAMENT RECONSTRUCTION.
abstract: The aim of this study was to analyze the correlation between deficits in the isokinetic peak torque of the knee extensors and flexors with hop tests, postoperative knee laxity and functional scores in normal and ACL- reconstructed subjects with patellar tendon and hamstring tendon autografts.
  
  
  METHODS
  Sixty male subjects were enrolled and subdivided into three groups: Twenty subjects without knee injuries (GC group) and two groups of 20 subjects submitted to ACL reconstruction with patellar tendon (GTP group) and hamstrings autograft (GTF group).
  
  
  RESULTS
  The results showed significant correlation between knee extensors peak torque and performance in the hop tests for GTF and GC groups. There are no significantly correlations between post op knee laxity and Lysholm score compared with the hop tests and peak torque deficits. Concerning the differences between groups, the GTP group showed greater peak torque deficits in knee extensors, worst Lysholm scores and higher percentage of individuals with lower limb symmetry index (ISM) < 90% in both hop tests when compared to the other two groups.
  
  
  CONCLUSIONS
  It is not recommendable to use only one measurement instrument for the functional evaluation of ACL-reconstructed patients, because significant correlation between peak torque, subject's functional score, knee laxity and hop tests were not observed in all groups.
authors.affiliation: Medical Sciences, Area of Concentration in Orthopedics, Traumatology, and Rehabilitation, School of Medicine, Ribeirão Preto (FMRP-USP).
authors.forename: Rodrigo Antunes
authors.initials: RA
authors.lastname: de Vasconcelos
authors.affiliation: Department of Biomechanics, Medicine, and Rehabilitation of the Locomotor Apparatus, School of Medicine, Ribeiräo Preto (FMRP-USP).
authors.forename: Débora
authors.initials: D
authors.lastname: Bevilaqua-Grossi
authors.affiliation: Department of Biomechanics, Medicine, and Rehabilitation of the Locomotor Apparatus, School of Medicine, Ribeiräo Preto (FMRP-USP).
authors.forename: Antonio Carlos
authors.initials: AC
authors.lastname: Shimano
authors.affiliation: Department of Biomechanics, Medicine, and Rehabilitation of the Locomotor Apparatus, School of Medicine, Ribeiräo Preto (FMRP-USP).
authors.forename: Cleber Antonio
authors.initials: CA
authors.lastname: Jansen Paccola
authors.affiliation: Department of Physical Therapy, Universidade Federal de São Carlos (UFSCar), São Paulo, Brazil.
authors.forename: Tânia Fátima
authors.initials: TF
authors.lastname: Salvini
authors.affiliation: Department of Physical Therapy, Universidade Federal de São Carlos (UFSCar), São Paulo, Brazil.
authors.forename: Christiane Lanatovits
authors.initials: CL
authors.lastname: Prado
authors.affiliation: Residency Program in Orthopedics, Knee Surgery, Hospital Municipal Celso Pierro, Pontificia Universidade Católica de Campinas (HMCP-PUCC).
authors.forename: Wilson A
authors.initials: WA
authors.lastname: Mello Junior
keywords: Anterior cruciate ligament; Knee; Retrospective study