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Observational Study on Hip Weakness After LLIF or ALIF Procedures

This study is looking at how hip and leg weakness changes after you have an LLIF or ALIF procedure (types of spinal fusion surgeries). Researchers want to understand how long it takes for your hip and leg strength to return to normal after these surgeries. They will measure your hip and knee strength using a special device called a dynamometer. You might be able to join if you are up to 65 years old, have certain spinal conditions like degenerative disc disease, and have tried other treatments for at least six months. This is an observational study, meaning researchers will watch and record your progress.

Study design
This is an observational study with a planned enrollment of 22 participants. It is not specified if there is a control group or if participants are assigned to different treatments.
What's involved
Your hip flexion and knee extension strength will be measured before surgery, and then again at 6 weeks, 12 weeks, and 6 months after your LLIF or ALIF procedure.
Compensation
Not stated in the trial record.
Follow-up
Participants will be followed for 6 months after their surgery to assess changes in strength.

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.

NCT04204135

The Course of Hip Flexion Weakness Following LLIF or ALIF

Enrolling by Invitation
Not specifiedUp to 65Observational
Rush University Medical Center
~22 participants
Updated 2025-09-24 on ClinicalTrials.gov
What's tested:LLIF or ALIF procedures

At a glance

Recruiting sites
0 of 1 listed site is recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Hip flexion and knee extension strength as measured by the Lafayette Instrument Manual Muscle Testing Device (Dynamometer).
Measured over Assessing changes in hip flexion and leg extension strength from the preoperative baseline to postoperative measurements taken at 6 weeks, 12 weeks and 6 months following lumbar fusions.

Conditions

Degenerative Disc Disease
Herniated Nucleus Pulposus
Spondylolisthesis

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Degenerative kyphosisDegenerative myelopathyFacet Joint DiseaseHerniation of nucleus pulposusIntervertebral Disc Degenerative DisorderNeurogenic claudicationRadiculopathyScoliosisSpondylolisthesis

Where it's being run

1 sites across 1 states
Illinois1

Who to contact

This trial hasn't published a contact. View it on ClinicalTrials.gov

Do you actually qualify for this trial?

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Eligibility criteria

Inclusion

1-, 2-, or 3-level L2L3, L3L4, or L4L5 LLIF or ALIF for degenerative pathology including radiculopathy, neurogenic claudication, intervertebral disc disease, facet joint disease, degenerative spondylolisthesis, degenerative myelopathy degenerative kyphosis, and scoliosis
Back and/or leg pain
Failed at least 6 months of conservative treatment

Exclusion

Older than 65 years of age
Prior spinal fusion surgery
Greater than Grade 2 spondylolisthesis
Greater than 10° scoliosis
History of spinal infection

What this trial measures

  • Hip flexion and knee extension strength as measured by the Lafayette Instrument Manual Muscle Testing Device (Dynamometer).Assessing changes in hip flexion and leg extension strength from the preoperative baseline to postoperative measurements taken at 6 weeks, 12 weeks and 6 months following lumbar fusions.

    Using a Lafayette Instrument Manual Muscle Testing Device (Dynamometer), we will be measuring the force in pounds a given patient can exert upon hip flexion and knee extension at the preoperative timepoint and 6 weeks, 12 weeks and 6 months postoperatively.