Gluteus Maximus Transfer Following THA Does Not Improve Abductor Strength

Gluteus maximus transfer following THA does not improve abductor strength - a case-control gait analysis study of 15 patients with gluteus medius disruption

The investigators have compared 15 gluteus maximus transferred patients with the use of a gait analysis system based on reflective markers and force plates to objectively evaluate the gait performance pre- and postoperatively.

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Key information

Conditions

Hip Arthropathy

Sex eligibility

Female

Study type

Interventional

Phase

Not applicable

Primary location

Roland Zügner

Gothenburg, SE 41310, Sweden

About this study

The gluteus maximus flap transfer (GMT) is a surgical technique to improve gait kinematics and kinetics as well as reduce pain and ameliorate functional outcome in patients with hip abductor deficiency of the gluteus medius following total hip arthroplasty (THA). The investigators used a gait analysis system based on reflective markers and force plates to objectively evaluate gait performance pre- and postoperatively.

Methods Gait analysis was performed in 15 patients who underwent GMT and were examined with an optical tracking system before and at a minimum of 13 months after the operation. Mean age was 69 years (SD=11), all were females. Median follow-up time was 24 (13-60) months. The primary outcome was hip abduction moment (Nm/kg) during gait. The control group consisted of 66 subjects without any gait pathology.

Who can participate

Healthy volunteers accepted: Yes

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

Inclusion criteria

Patients with hip abductor deficiency of the gluteus medius following total hip arthroplasty (THA)

Exclusion criteria

THA prior to the muscle transfer

Treatment and study plan

Gluteus maximus transfer

Procedure

Gait analysis study of 15 patients with gluteus medius disruption

Primary outcomes

Abductor strength measurement with use of an optical tracking system after Gluteus maximus transfer - a case-control gait analysis study of 15 patients pre- and postoperative with gluteus medius disruption

Time frame: Preop

Gait analysis examination/measure will be performed preoperative with an optical tracking system in a gait laboratory using reflective markers and integrated force plates in order to record kinetics (Nm/kg) of abductor muscles moment in the frontal plane.
Abductor strength measurement with use of an optical tracking system after Gluteus maximus transfer- a case-control gait analysis study of 15 patients pre- and postoperative with gluteus medius disruption

Time frame: Postop 2 year

Gait analysis examination/measure will be performed 2 year postoperative with an optical tracking system in a gait laboratory using reflective markers and integrated force plates in order to record kinetics (Nm/kg) of abductor muscles moment in the frontal plane.

Sponsors and collaborators

Lead sponsor

Göteborg University

Other

Registry information

Official study title

Gluteus Maximus Transfer Following THA Does Not Improve Abductor Strength - a Case-control Gait Analysis Study of 15 Patients With Gluteus Medius Disruption

Important dates

Study start: 2012
Primary completion: 2018
Study completion: 2018
First posted: Mar 15, 2021
Registry last updated: Jul 7, 2021

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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.

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Completed