Relationship between femoroacetabular contact areas and hip position in the normal joint: an in vitro evaluation

Signorelli, Cecilia; Lopomo, N.; Bonanzinga, Tommaso; Muccioli, Giulio Maria Marcheggiani; Safran, Marc R.; Marcacci, Maurilio; Zaffagnini, Stefano

doi:10.1007/s00167-012-2151-y

Cited by 16 publications

(9 citation statements)

References 32 publications

(45 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Provocative tests commonly are used to identify pathology but may have the potential to screen for injury risk factors. The FADIR often is performed to assist in diagnosing hip joint pathology, because this test position stresses a large portion of the acetabulum [15] and labrum [16]. The FADIR has high sensitivity for detecting pain and hip joint pathology in symptomatic individuals [14,17] but low specificity [17,18].…”

Section: Introductionmentioning

confidence: 99%

Gender‐Dependent Differences in Hip Range of Motion and Impingement Testing in Asymptomatic College Freshman Athletes

Czuppon

Prather

Hunt

et al. 2016

PM&R

View full text Add to dashboard Cite

Background Athletic activity is a proposed factor in the development and progression of intraarticular hip pathology. Early diagnosis and preventive treatments in “at risk” athletes is needed. Objectives Primary: To report hip range of motion (ROM) and prevalence of positive impingement testing in asymptomatic college freshman athletes; Secondary: To determine if an association exists between hip ROM and a positive flexion-adduction-internal rotation (FADIR) test. Design Cross-sectional study Setting Collegiate athletic campus Participants Four hundred thirty (299 males, 131 females) freshman athletes reporting no current or previous hip pain. Methods During the athletes’ preseason medical screening, trained examiners performed a hip-specific exam to obtain data for hip ROM and impingement testing. Main Outcome Measurements Bilateral passive ROM measures included hip flexion, and hip internal and external rotation with the hip flexed 0° and 90° Results Mean age of males was 18.5 ± 0.8 and females 18.3 ± 0.6 years old (p=.003). Males demonstrated less hip ROM than females in flexion (115.8 ± 11.2° vs. 122.0 ± 10.5°, p<.001), internal rotation in 90° flexion (26.9 ± 9.8° vs. 34.7 ± 10.7°, p<.001) and 0° flexion (29 .0 ± 9.8° vs. 38.9 ± 10.1°, p<.001), and external rotation in 90° flexion (44.7 ± 10.9° vs. 49.7 ± 10.4°, p<.001), but not for external rotation in 0° flexion (39.8 ± 11.1° vs. 37.6 ±11. 5°, p=.06). Pain with FADIR test on the right and left hip were reported in 11.9% and 14.5% of athletes, respectively. Gender and a positive FADIR were not related (males 12.2%, females 15.3%, p=.36). Conclusions In asymptomatic college freshman athletes, males generally demonstrated less hip ROM than females. Additionally, a positive FADIR was more prevalent than previously reported in healthy young adults. Pre-season screenings utilizing this baseline data in conjunction with other examination findings may allow identification of athletes at future risk for hip pain and/or injury.

show abstract

Section: Introductionmentioning

confidence: 99%

Gender‐Dependent Differences in Hip Range of Motion and Impingement Testing in Asymptomatic College Freshman Athletes

Czuppon

Prather

Hunt

et al. 2016

PM&R

View full text Add to dashboard Cite

show abstract

“… 25 , 95 A cadaveric study of hips without osseous FAI examined the effects of dancer- or gymnast-like flexibility and found that extremes of hyperextension and external rotation could generate femoroacetabular contact at the posterior-superior acetabulum. 83 …”

Section: Impingementmentioning

confidence: 99%

The Hyperflexible Hip

et al. 2014

View full text Add to dashboard Cite

Context:Dance, gymnastics, figure skating, and competitive cheerleading require a high degree of hip range of motion. Athletes who participate in these sports use their hips in a mechanically complex manner.Evidence Acquisition:A search of the entire PubMed database (through December 2013) and additional searches of the reference lists of pertinent articles.Study Design:Systematic review.Level of Evidence:Level 3.Results:Whether innate or acquired, dancers and gymnasts have some hypermobility that allows their hips to be placed in potentially impinging or unstable positions required for their given activity. Such extremes of motion can result in both intra-articular and extra-articular impingement as well as compensatory osseous and muscular pathology. In addition, dancers and gymnasts are susceptible to impingement-induced instability. Dancers with innate generalized hyperlaxity are at increased risk of injury because of their activities and may require longer recovery times to return to play. Both nonoperative and operative treatments (arthroscopic and open) have an important role in returning flexibility athletes to their preoperative levels of sport and dance.Conclusion:Because of the extreme hip motion required and the compensatory soft tissue laxity in dancers and gymnasts, these athletes may develop instability, impingement, or combinations of both. This frequently occurs in the setting of subtle pathoanatomy or in patients with normal bony anatomy. With appropriate surgical indications and the correct operative technique, the treating surgeon can anticipate high levels of return to play for the gymnast and dancer with hip pain.

show abstract

“…In the past 10 years, many research labs have developed new methods to study hip joint biomechanics including: digital image correlation ( Dickinson et al, 2012 , Dickinson et al, 2011 ), roentgen stereophotogrammetric analysis ( Dy et al, 2008 , Myers et al, 2011 ), digital variable resistance transducers ( Safran et al, 2011 , Smith et al, 2011 ), real-time contact-pressure measurement ( Lee et al, 2015 , Rudert et al, 2014 ), fluid infusion devices ( Cadet et al, 2012 , Dwyer et al, 2014 ), optical tracking motion analysis ( Lopomo et al, 2010 , Signorelli et al, 2013 ), 3D digital reconstructions combining CT scans and motion tracking ( Dwyer et al, 2014 , Incavo et al, 2011 ), combined use of in-vitro and finite element modelling ( Anderson et al, 2008 , Dickinson et al, 2011 , Elkins et al, 2011 ), custom built rigs in servo-hydraulic actuators/materials testing machines ( Dickinson et al, 2012 , Elkins et al, 2011 , Ito et al, 2009 , Song et al, 2012 , van Arkel et al, 2015a , van Arkel et al, 2015b ) and six-degrees-of-freedom robotic load/torque actuators ( Colbrunn et al, 2013 , Smith et al, 2014 ). Such variation in testing methodology not only allows new hypotheses to be tested but also prevents systematic bias that could result from using the same methodology with the same limitations.…”

Section: Introductionmentioning

confidence: 99%

In vitro hip testing in the International Society of Biomechanics coordinate system

Arkel

Jeffers

2016

Journal of Biomechanics

View full text Add to dashboard Cite

Many innovative experiments are designed to answer research questions about hip biomechanics, however many fail to define a coordinate system. This makes comparisons between studies unreliable and is an unnecessary hurdle in extrapolating experimental results to clinical reality. The aim of this study was to present a specimen mounting protocol which aligns and registers hip specimens in the International Society of Biomechanics (ISB) coordinate system, which is defined by bony landmarks that are identified by palpation of the patient׳s body. This would enable direct comparison between experimental testing and clinical gait analysis or radiographic studies. To represent the intact hip, four intact synthetic full-pelves with 8 full-length articulating femora were assembled and digitised to define the ISB coordinate system. Using our proposed protocol, pelvis specimens were bisected into left and right hemi-pelves and femora transected at the mid-shaft, and then mounted in bone pots to represent a typical experimental setup. Anatomical landmarks were re-digitised relative to mechanical features of the bone pots and the misalignment was calculated. The mean misalignment was found to be less than 1.5° flexion/extension, ab/adduction and internal/external rotation for both the pelves and femora; this equates to less than 2.5% of a normal range of hip motion. The proposed specimen mounting protocol provides a simple method to align in vitro hip specimens in the ISB coordinate system which enables improved comparison between laboratory testing and clinical studies. Engineering drawings are provided to allow others to replicate the simple fixtures used in the protocol.

show abstract

Relationship between femoroacetabular contact areas and hip position in the normal joint: an in vitro evaluation

Cited by 16 publications

References 32 publications

Gender‐Dependent Differences in Hip Range of Motion and Impingement Testing in Asymptomatic College Freshman Athletes

Gender‐Dependent Differences in Hip Range of Motion and Impingement Testing in Asymptomatic College Freshman Athletes

The Hyperflexible Hip

In vitro hip testing in the International Society of Biomechanics coordinate system

Contact Info

Product

Resources

About