Bony abnormalities of the hip joint: a new comprehensive, reliable and radiation-free measurement method using magnetic resonance imaging

Harris‐Hayes, Marcie; Commean, Paul K.; Patterson, Jacqueline D.; Clohisy, John C.; Hillen, Travis J.

doi:10.1093/jhps/hnu009

Cited by 27 publications

(27 citation statements)

References 30 publications

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“…However, it can be argued that pelvic orientation after correction might not represent the patient's functional alignment. However, it certainly allows for accurate and reproducible measurements as previously reported 45 and is currently used in multiple centers (►Fig. 6).…”

Section: Standardization Protocolmentioning

confidence: 93%

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Imaging Methodology for Hip Preservation: Techniques, Parameters, and Thresholds

Mascarenhas

Ayeni

Egund

et al. 2019

Semin Musculoskelet Radiol

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The concept of hip impingement and hip-preserving surgery has been appreciated in more detail since 2001 when a new surgical approach was reported and a hypothesis linking femoroacetabular impingement (FAI) with osteoarthritis was presented. Paralleling the introduction of hip arthroscopy, these events led to an increasing interest in the hip, and the number of publications has risen rapidly over the past 15 years, despite limited evidence levels and inconsistent methodology. Accordingly, etiology, diagnosis, prognosis, and the effects of treatment for FAI are still elusive due to a number of uncertainties and a lack of clear diagnostic criteria.Future research must focus on developing high-quality scientific studies, so thorough and reproducible methodology is needed. This review provides researchers, radiologists, and clinicians with a comprehensive approach to hip imaging with a focus on strategies to help guide the clinical diagnosis. Using evidence from current literature and knowledge from experienced clinicians, some of the imaging methodology challenges are deciphered.

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Section: Standardization Protocolmentioning

confidence: 93%

“…somewhat problematic in younger children, where the radiolucent acetabular growth cartilage forms much of the acetabular rim. 45…”

Section: Precise Identification Of Bony Landmarks Has Always Beenmentioning

confidence: 99%

Imaging Methodology for Hip Preservation: Techniques, Parameters, and Thresholds

Mascarenhas

Ayeni

Egund

et al. 2019

Semin Musculoskelet Radiol

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“…15 A 1.5T magnetic resonance system (Avanto; Siemens, Erlangen, Germany) was used to obtain a series of 3D fat suppressed gradient echo images centered at the pelvis.…”

Section: Methodsmentioning

confidence: 99%

“…Specific parameters were as follows: slice thickness 0.82mm, Repetition time (TR) 15.96ms, Echo time (TE) 6.2ms, Field of view (FOV) 400mm at the pelvis, 512×512 matrix , no gap between slice thickness with total acquisition time being approximately 14 minutes. 15 …”

Section: Methodsmentioning

confidence: 99%

“…15 Imaging sequences for each participant were visually assessed to determine if the defined region of interest (ROI) for the gluteals, consisting of GMed, GMin, and a small portion of gluteus maximus (GMax), and TFL was available. To be included, images had to contain the most superior aspect of the iliac crests to the ischial tuberosities in the coronal plane and the most anterior point of the anterior superior iliac spine to the most posterior aspect of the acetabular wall in the transverse plane.…”

Section: Methodsmentioning

confidence: 99%

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Hip Abductor Muscle Volume and Strength Differences Between Women With Chronic Hip Joint Pain and Asymptomatic Controls

Mastenbrook¹,

Commean²,

Hillen³

et al. 2017

Journal of Orthopaedic & Sports Physical Therapy

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Study Design Secondary analysis, cross-sectional study Background Chronic hip joint pain (CHJP) can lead to limitations in activity participation, but the musculoskeletal factors associated with the condition are relatively unknown. Understanding the factors associated with CHJP may help develop rehabilitation strategies to improve quality of life of individuals with long-term hip pain. Objectives To compare measures of hip abductor muscle volume and hip abductor muscle strength between women with CHJP and asymptomatic controls. Methods Thirty women, 15 with CHJP and 15 matched asymptomatic controls (18–40 years of age), participated in this study. Magnetic resonance imaging was used to determine the volume of the primary hip abductor muscles, consisting of gluteus medius (GMed), gluteus minimus (GMin), a small portion of gluteus maximus (GMax), and tensor fascia latae (TFL), within a defined region of interest. Break tests were performed using a handheld dynamometer to assess hip abductor strength. During the strength test, the participant was positioned in sidelying with the involved hip in 15° abduction. Independent-sample t tests were used to compare muscle volume and strength values between those with CHJP and asymptomatic controls. Results Compared to asymptomatic controls, women with CHJP demonstrated significantly increased gluteal muscle volume (228±40cm3 versus 199±29cm3; p=.032), but decreased hip abductor strength (74.6±16.8Nm versus 93.6±20.2Nm; p=.009). There were no significant differences in TFL muscle volume between the two groups (p=.640). Conclusions Women with CHJP appear to have larger gluteal muscles, but decreased hip abductor strength compared to asymptomatic controls.

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Efficient cascaded V‐net optimization for lower extremity CT segmentation validated using bone morphology assessment

Kuiper

Sakkers

Stralen

et al. 2022

Journal Orthopaedic Research

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Semantic segmentation of bone from lower extremity computerized tomography (CT) scans can improve and accelerate the visualization, diagnosis, and surgical planning in orthopaedics. However, the large field of view of these scans makes automatic segmentation using deep learning based methods challenging, slow and graphical processing unit (GPU) memory intensive. We investigated methods to more efficiently represent anatomical context for accurate and fast segmentation and compared these with state-of-the-art methodology. Six lower extremity bones from patients of two different datasets were manually segmented from CT scans, and used to train and optimize a cascaded deep learning approach. We varied the number of resolution levels, receptive fields, patch sizes, and number of V-net blocks. The best performing network used a multi-stage, cascaded V-net approach with 128 3 −64 3 −32 3 voxel patches as input. The average Dice coefficient over all bones was 0.98 ± 0.01, the mean surface distance was 0.26 ± 0.12 mm and the 95th percentile Hausdorff distance 0.65 ± 0.28 mm. This was a significant improvement over the results of the state-of-the-art nnU-net, with only approximately 1/12th of training time, 1/3th of inference time and 1/4th of GPU memory required.Comparison of the morphometric measurements performed on automatic and manual segmentations showed good correlation (Intraclass Correlation Coefficient [ICC] >0.8) for the alpha angle and excellent correlation (ICC >0.95) for the hip-kneeankle angle, femoral inclination, femoral version, acetabular version, Lateral Centre-Edge angle, acetabular coverage. The segmentations were generally of sufficient quality for the tested clinical applications and were performed accurately and quickly compared to state-of-the-art methodology from the literature.

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Bony abnormalities of the hip joint: a new comprehensive, reliable and radiation-free measurement method using magnetic resonance imaging

Cited by 27 publications

References 30 publications

Imaging Methodology for Hip Preservation: Techniques, Parameters, and Thresholds

Imaging Methodology for Hip Preservation: Techniques, Parameters, and Thresholds

Hip Abductor Muscle Volume and Strength Differences Between Women With Chronic Hip Joint Pain and Asymptomatic Controls

Efficient cascaded V‐net optimization for lower extremity CT segmentation validated using bone morphology assessment

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