Dataset Information

Hip joint space width in an asymptomatic population: Computed tomography analysis according to femoroacetabular impingement morphologies.

ABSTRACT:

Background

Although the association between femoroacetabular impingement (FAI) syndrome and hip osteoarthritis (OA) is well established, not all hips exhibiting cam or pincer morphologies (i.e. imaging findings of FAI syndrome) are symptomatic or arthritic. It is difficult to detect which subgroup will wear out, or how does the arthritic process start radiographically. Therefore, we measured in a retrospective study based on computed tomography (CT) analysis, the joint space width (JSW) according to a standard protocol and we investigated its variation according to the presence of a cam and/or pincer morphology. We hypothesized that the radiological presence of a cam and/or pincer hip morphologies, even in asymptomatic subjects, would affect JSW.

Methods

Two hundred pelvic CT scans performed for non-orthopedic etiologies in asymptomatic patients were analyzed using a 3D software. After excluding patients with hip OA or previous hip surgery, 194 pelvic CT scans (388 hips) were retained. We measured for each hip the presence of FAI syndrome imaging findings (cam and pincer morphologies) using the classical parameters of coxometry. In addition, we performed a measurement of articular joint space width according to a standard protocol. We then calculated the mean thickness of 3 defined regions along the femoroacetabular joint: anterior-superior, posterior-inferior, and posterior-superior. Lastly, we compared the JSW across 4 groups: hips with (1) no cam or pincer, (2) pincer, (3) cam, and (4) cam and pincer morphologies using a multivariate analysis. Additionally, a topographic heatmap of JSW was plotted allowing quantitative representation of JSW along the joint.

Results

Increased JSW with peak difference of 0.9 mm (25.7%) was found in hips with cam and pincer morphologies when compared to normal ones (p = 0.002) and to hips with pincer or cam morphologies only.

Conclusion

Positive variations in JSW were associated to the presence of cam and pincer morphologies. This significant increase in JSW could be one of the earliest measurable changes preceding later classical alterations.

SUBMITTER: Nehme A

PROVIDER: S-EPMC7844437 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature

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Publications

Hip joint space width in an asymptomatic population: Computed tomography analysis according to femoroacetabular impingement morphologies.

Nehme Alexandre A El-Hajj Gerard G Maalouly Joseph J Ayoubi Rami R Abdel-Nour Hicham H Moucharafieh Ramzi R Ashou Raja R

Asia-Pacific journal of sports medicine, arthroscopy, rehabilitation and technology 20210127

<h4>Background</h4>Although the association between femoroacetabular impingement (FAI) syndrome and hip osteoarthritis (OA) is well established, not all hips exhibiting cam or pincer morphologies (i.e. imaging findings of FAI syndrome) are symptomatic or arthritic. It is difficult to detect which subgroup will wear out, or how does the arthritic process start radiographically. Therefore, we measured in a retrospective study based on computed tomography (CT) analysis, the joint space width (JSW) ...[more]

PMID: 33575169

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Project description:BackgroundThe cam deformity causes the anterosuperior femoral head to obstruct with the acetabulum, resulting in femoroacetabular impingement (FAI) and elevated risks of early osteoarthritis. Several finite element models have simulated adverse loading conditions due to cam FAI, to better understand the relationship between mechanical stresses and cartilage degeneration. Our purpose was to conduct a systematic review and examine the previous finite element models and simulations that examined hip joint stresses due to cam FAI.MethodsThe systematic review was conducted to identify those finite element studies of cam-type FAI. The review conformed to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines and studies that reported hip joint contact pressures or stresses were included in the quantitative synthesis.ResultsNine articles studied FAI morphologies using finite element methods and were included in the qualitative synthesis. Four articles specifically examined contact pressures and stresses due to cam FAI and were included in the quantitative synthesis. The studies demonstrated that cam FAI resulted in substantially elevated contact pressures (median = 10.4 MPa, range = 8.5-12.2 MPa) and von Mises stresses (median 15.5 MPa, range = 15.0-16.0 MPa) at the acetabular cartilage; and elevated maximum-shear stress on the bone (median = 15.2 MPa, range = 14.3-16.0 MPa), in comparison with control hips, during large amplitudes of hip motions. Many studies implemented or adapted idealized, ball-and-cup, parametric models to predict stresses, along with homogeneous bone material properties and in vivo instrumented prostheses loading data.ConclusionThe formulation of a robust subject-specific FE model, to delineate the pathomechanisms of FAI, remains an ongoing challenge. The available literature provides clear insight into the estimated stresses due to the cam deformity and provides an assessment of its risks leading to early joint degeneration.

Project description:PurposeTo evaluate clinical depression scores and functional outcomes following arthroscopic treatment of femoroacetabular impingement syndrome in patients with elevated preoperative depressive symptoms as defined by Patient-Reported Outcomes Measurement Information System for Depression (PROMIS-D).MethodsPatients with femoroacetabular impingement syndrome completed the PROMIS-D Computer Adaptive Test and additional patient-reported outcome (PRO) measures preoperatively and at the time of postoperative visits. Patients were categorized into preoperative clinically depressed (CD) and nonclinically depressed (NCD) groups based on preoperative PROMIS-D scores. Scores ≥55 correlate to mild clinical depression, and this cutoff was used to determine preoperative depression status. PROMIS-D scores and functional outcome scores were assessed at 6 months and a minimum of 1-year postoperatively.ResultsIn total, 100 patients were included with complete PROs at a minimum of 1-year follow-up. Of those included, 21 (21%) were categorized with preoperative CD. There were no differences in demographic or radiographic variables between the preoperative CD and NCD groups. At 6 months and 12 months postoperatively, the percentage of patients in the preoperative CD group with continued depression was 33.3% and 23.8%, respectively. Overall, 1-year change in PROMIS-D score for the CD group was -9.1 versus -0.8 in the NCD group (P = .001). There was no significant difference in rates of patients achieving patient acceptable symptom state between the preoperative CD and NCD groups.ConclusionsPatients with symptoms of preoperative CD, as defined by the PROMIS-D score, demonstrated significant improvement in depressive symptoms following hip arthroscopy. In addition, patients with CD preoperatively did not show decreased rates of achieving minimum clinically important difference or patient acceptable symptom state on postoperative PROs compared with patients with NCD.Level of evidenceLevel IV, therapeutic case series.

Dataset Information

Hip joint space width in an asymptomatic population: Computed tomography analysis according to femoroacetabular impingement morphologies.

Background

Methods

Results

Conclusion

Publications

Hip joint space width in an asymptomatic population: Computed tomography analysis according to femoroacetabular impingement morphologies.

Similar Datasets

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