Effectiveness of Kneehab in Strengthening the Quadriceps of Patients Post Anterior Cruciate Ligament (ACL) Reconstruction

NCT ID: NCT00737750

Last Updated: 2008-08-28

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE3
• Total Enrollment: 131 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2005-04-30
• Study Completion Date: 2006-10-31

Brief Summary

Prospective, controlled, randomized, single blind study in patients undergoing rehabilitation following anterior cruciate ligament reconstruction. 96 patients were randomly assigned to one of three groups. Group Group KH (Kneehab n=33)trained with a new type of garment integrated NMES for 20 minutes, 3 times per day, 5 days per week for 12 weeks; Group PS (Poli-Stim n=29) trained with standard neuromuscular electrical stimulation (NMES) for 20 minutes per day, 5 days per week for 12 weeks; Group CO (Control - n=34), which did not use muscle stimulation, performed voluntary isometric quadriceps muscle contractions. Patients receiving either form of NMES treatment were instructed to isometrically contract the quadriceps muscle voluntarily with each electrical muscle stimulation. All three groups superimposed this training schedule on the standard post-ACL reconstruction rehabilitation protocol used at the clinic.

The study design corresponded to a two-way variance analysis with three groups and 4 examination times (Baseline, 6 weeks, 12 weeks and 24 weeks post ACL reconstruction). The level of significance was set at 5%. The key indicators of the quadriceps muscle training intervention were the isokinetic strength development of the extensors of the injured leg at 90 degrees/second and 180 degrees/second and the distance achieved by participants performing the single-leg hop, the shuttle run. The target was to show a difference of 10% in the relative distance jumped for the single-leg hop and for the isokinetic strength tests and a 1.2 second difference in the time to complete the shuttle run. The target of 3 weeks was set for participants to achieve full weight-bearing capability with use of a walking aid. A comparison between the groups of the time for return to usual work activities was planned.

Detailed Description

Single center, prospective, controlled, randomized, single blind study in 96 patients following anterior crucial ligament (ACL)reconstruction to compare the effect of adding traditional NMES or garment-integrated NMES to a standard post-surgery rehabilitation program. In both cases the NMES was superimposed on isometric voluntary muscle contractions.

Conditions

Anterior Cruciate Ligament Reconstruction

Keywords

Neuromuscular electrical stimulation (NMES); Knee Surgery; Anterior cruciate ligament; Atrophy Prevention; Accelerated Recovery

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: SINGLE_GROUP
• Primary Study Purpose: TREATMENT
• Blinding Strategy: SINGLE

Study Groups

KH

Kneehab is a garment integrated NMES device with multipath technology.

Group Type: EXPERIMENTAL

Kneehab

Intervention Type: DEVICE

Program of NMES 3 times per day, five days per week for 12 weeks.

PS

Poli-Stim, a standard NMES device, used for 3 times per day, five days per week for 12 weeks.

Group Type: ACTIVE_COMPARATOR

Poli-Stim

Intervention Type: DEVICE

Poli-Stim is standard NMES which the patients used for 20 minutes, 3 times per day, 5 days per week for 12 weeks.

CO

Control group performed voluntary muscle contractions for 20 minutes 3 times per day, 5 days per week for 12 weeks.

Group Type: ACTIVE_COMPARATOR

Control

Intervention Type: BEHAVIORAL

Voluntary quadriceps muscle contractions.

Interventions

Kneehab

Program of NMES 3 times per day, five days per week for 12 weeks.

Intervention Type: DEVICE

Poli-Stim

Poli-Stim is standard NMES which the patients used for 20 minutes, 3 times per day, 5 days per week for 12 weeks.

Intervention Type: DEVICE

Control

Voluntary quadriceps muscle contractions.

Intervention Type: BEHAVIORAL

Other Intervention Names

Kneehab, neurotech; Poli-Stim, Neurotech

Eligibility Criteria

Inclusion Criteria

• Persons who had surgical reconstruction of the anterior cruciate ligament
• Persons with additional treatment of minor miniscal defects
• Persons who were willing and able to provide Informed Consent

Exclusion Criteria

• Persons who had multi-ligament reconstruction
• ACL patients with a microfracture or extra burden on the knee
• Persons who registered pain above level 3 on the IKDC subjective evaluation pain scale questions, 3 days after surgery
• Participants in a volunteer study within the previous ninety (90) days
• Persons with serious cardiac arrhythmias or other implanted devices
• Persons with cardiac pacemakers
• Persons with neurological or psychiatric disorders
• Persons who are pregnant or breastfeeding
• Intake of drugs that interfere with the neuromuscular system
• Persons with epilepsy
• Any condition or history which in the opinion of the Principal Investigator might increase the risk to an individual or interfere with the evaluation of data

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Bio-Medical Research, Ltd.

INDUSTRY

Sponsor Role: lead

Responsible Party

Centre for Knee and Foot Surgery, Sports Traumatology, ATOS Clinic

Principal Investigators

Hans H Paessler, FRCSed

Role: PRINCIPAL_INVESTIGATOR

Centre for Knee and Foot Surgery Sports Traumatology, ATOS Clinic, Heidelberg, Germany

Locations

ATOS Clinic

Heidelberg, Heidelberg, Germany

Countries

Germany

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Other Identifiers

BMR 04 2001A

Identifier Type: -

Identifier Source: org_study_id