NCT00737750

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.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
131

participants targeted

Target at P25-P50 for phase_3

Timeline
Completed

Started Apr 2005

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

April 1, 2005

Completed
1.5 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

October 1, 2006

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

October 1, 2006

Completed
1.9 years until next milestone

First Submitted

Initial submission to the registry

August 19, 2008

Completed
1 day until next milestone

First Posted

Study publicly available on registry

August 20, 2008

Completed
Last Updated

August 28, 2008

Status Verified

August 1, 2008

Enrollment Period

1.5 years

First QC Date

August 19, 2008

Last Update Submit

August 27, 2008

Conditions

Keywords

Neuromuscular electrical stimulation (NMES)Knee SurgeryAnterior cruciate ligamentAtrophy PreventionAccelerated Recovery

Outcome Measures

Primary Outcomes (1)

  • Isokinetic strength test of extension of the injured leg. Relative strength extension ratio (injured/uninjured). Distance of the jump achieved in the single leg hop and the time to achieve the shuttle run.

    12 weeks Intervention + Outcomes at 24 Weeks

Secondary Outcomes (1)

  • Strength test of flexors of the knee joint and 5 tests of coordination of proprioceptions (triple hop; side-step; carioca; timed hop and cross-over hop).

    12 weeks Intervention + Outcomes at 24 weeks

Study Arms (3)

KH

EXPERIMENTAL

Kneehab is a garment integrated NMES device with multipath technology.

Device: Kneehab

PS

ACTIVE COMPARATOR

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

Device: Poli-Stim

CO

ACTIVE COMPARATOR

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

Behavioral: Control

Interventions

KneehabDEVICE

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

Also known as: Kneehab, neurotech
KH
Poli-StimDEVICE

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

Also known as: Poli-Stim, Neurotech
PS
ControlBEHAVIORAL

Voluntary quadriceps muscle contractions.

CO

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • 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

You may not qualify if:

  • 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

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

ATOS Clinic

Heidelberg, Heidelberg, D-69115, Germany

Location

Related Publications (47)

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Study Officials

  • Hans H Paessler, FRCSed

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

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
phase 3
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
SINGLE GROUP
Sponsor Type
INDUSTRY

Study Record Dates

First Submitted

August 19, 2008

First Posted

August 20, 2008

Study Start

April 1, 2005

Primary Completion

October 1, 2006

Study Completion

October 1, 2006

Last Updated

August 28, 2008

Record last verified: 2008-08

Locations