Dataset Information

Effect of isolated hip abductor fatigue on single-leg landing mechanics and simulated ACL loading.

ABSTRACT:

Background

Altered movement biomechanics are a risk factor for ACL injury. While hip abductor weakness has been shown to negatively impact landing biomechanics, the role of this musculature and injury risk is not clear. The aim of this musculoskeletal simulation study was to determine the effect of hip abductor fatigue-induced weakness on ACL loading, force production of lower extremity muscles, and lower extremity biomechanics during single-leg landing.

Methods

Biomechanical data from ten healthy adults were collected before and after a fatigue protocol and used to derive subject-specific estimates of muscle forces and ACL loading using a 5-degree of freedom (DOF) model.

Results

There were no significant differences in knee joint angles and ACL loading between pre and post-fatigue. However, there were significant differences, due to fatigue, in lateral trunk flexion angle, total excursion of trunk, muscle forces, and joint moments.

Conclusion

Altered landing mechanics, due to hip abductor fatigue-induced weakness, may be associated with increased risk of ACL injury during single-leg landings. Clinical assessment or screening of ACL injury risk will benefit from subject-specific musculoskeletal models during dynamic movements. Future study considering the type of the fatigue protocols, cognitive loads, and various tasks is needed to further identify the effect of hip abductor weakness on lower extremity landing biomechanics.

SUBMITTER: Kim N

PROVIDER: S-EPMC8503925 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature

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Publications

Effect of isolated hip abductor fatigue on single-leg landing mechanics and simulated ACL loading.

Kim Namwoong N Lee Sae Yong SY Lee Sung-Cheol SC Rosen Adam B AB Grindstaff Terry L TL Knarr Brian A BA

The Knee 20210613

<h4>Background</h4>Altered movement biomechanics are a risk factor for ACL injury. While hip abductor weakness has been shown to negatively impact landing biomechanics, the role of this musculature and injury risk is not clear. The aim of this musculoskeletal simulation study was to determine the effect of hip abductor fatigue-induced weakness on ACL loading, force production of lower extremity muscles, and lower extremity biomechanics during single-leg landing.<h4>Methods</h4>Biomechanical data ...[more]

PMID: 34134079

Similar Datasets

Project description:Hip abductor deficiency resulting from gluteus medius and minimus pathology is increasingly recognized as a generator of lateral-sided hip pain. In the setting of a failed gluteus medius repair or in patients with irreparable tears, transfer of the anterior portion of the gluteus maximus muscle can be performed to treat gluteal abductor deficiency. The classic description of the gluteus maximus transfer technique relies solely on bone tunnel fixation. This article describes a reproducible technique that incorporates the addition of a distal row to the tendon transfer, which may improve fixation by both compressing the tendon transfer to the greater trochanter and providing improved biomechanical strength to the transfer. Technique Video Video 1 Gluteus maximus transfer for hip abductor deficiency. A surgical incision is placed over the femoral shaft and extended proximally and posteriorly toward the posterior superior iliac spine. Electrocautery is used to dissect down to the iliotibial tract. A Cobb elevator is used to lift the subcutaneous adipose tissue and identify the underlying fascial layer. Once developed, the iliotibial tract is split in the midline of the greater trochanter to establish the anterior edge. Next, the posterior aspect of the flap is planned using electrocautery to preliminarily identify the posterior edge of the gluteus maximus flap. A nonabsorbable braided suture is used to place a Krackow stitch in the distal portion of the flap. Scar tissue or prior suture must be removed to expose the greater trochanter, and a high-speed burr is used to decorticate the greater trochanter and create a bleeding footprint. A 2.6-mm drill is used to create 3 anterior and 3 posterior bone tunnels in the greater trochanter, and FiberWire sutures are placed through the muscle flap on the anterior and posterior edges and shuttled through the bone tunnels. A double-row repair is used, and 1 limb from each FiberWire suture is passed through a suture anchor. The holes for each anchor are drilled and then tapped distal to the vastus ridge.

Dataset Information

Effect of isolated hip abductor fatigue on single-leg landing mechanics and simulated ACL loading.

Background

Methods

Results

Conclusion

Publications

Effect of isolated hip abductor fatigue on single-leg landing mechanics and simulated ACL loading.

Similar Datasets

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