The Course of Hip Flexion Weakness Following LLIF or ALIF

The purpose of this study is to assess the course of hip weakness after LLIF or ALIF procedures. These outcomes include measures of hip strength using a dynamometer, which is a device used to measure muscle strength. While it is known that people experience temporary hip and leg weakness after an LLIF or ALIF, the exact timing of when hip and leg strength is regained after an LLIF or ALIF is not known.

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Key information

Conditions

Degenerative Disc Disease Bone Diseases Herniated Nucleus Pulposus Intervertebral Disc Degeneration Musculoskeletal Diseases Spinal Diseases Spondylolisthesis Spondylolysis Spondylosis

Age range

Up to 65 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Rush University Medical Center

Chicago, Illinois, 60612, United States

Who can participate

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

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 criteria

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

Treatment and study plan

LLIF or ALIF procedures

Procedure

LLIF or ALIF procedures

Primary outcomes

Hip flexion and knee extension strength as measured by the Lafayette Instrument Manual Muscle Testing Device (Dynamometer).

Time frame: 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.

Sponsors and collaborators

Lead sponsor

Rush University Medical Center

Other

Registry information

Important dates

Study start: 2018
Primary completion: 2027
Study completion: 2027
First posted: Dec 18, 2019
Registry last updated: Sep 24, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.

Completed