Differences in Femoral Notch Anatomy between Men and Women

Charlton, William P.H.; John, Thomas; Ciccotti, Michael G.; Harrison, N.J.; Schweitzer, Mark E.

doi:10.1177/03635465020300030501

Cited by 140 publications

(127 citation statements)

References 16 publications

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“…Our report is the first, as far as we know, to use magnetic resonance imaging (MRI) to evaluate NWI in a population of skeletally immature patients. The imaging modality used to measure notch width has been the topic of considerable debate [5,8,[13][14][15][16]. Plain radiographic measurements of NWI are easy to obtain, but may be subject to patient positioning, variability in technique, projection and magnification [13].…”

Section: Discussionmentioning

confidence: 99%

“…Herzog [8] demonstrated that MRI measurements of intercondylar notch width were more accurate than those made on plain radiographs when compared to direct measurements from cadaveric specimens. Other authors have invalidated plain radiographic measurements of NWI as a standardising tool, suggesting that measurements of absolute notch width may be more useful [5,14].…”

Section: Discussionmentioning

confidence: 99%

“…Similar measurements for describing the dimensions of the intercondylar notch have also been devised using computed tomography (CT) and magnetic resonance imaging (MRI) [8,[13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

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Risk factors for Anterior Cruciate Ligament injury in skeletally immature patients: analysis of intercondylar notch width using Magnetic Resonance Imaging

Domżalski

Grzelak

Gabos

2010

International Orthopaedics (SICOT)

124

120

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The necessity for identification of risk factors for Anterior Cruciate Ligament, ACL injury has challenged many investigators. Many authors have reported lower Notch Width Index, NWI measured on radiographs in patients with midsubstance ACL lesions compared to control groups. Since a narrow intercondylar notch has been implicated as a possible risk factor related to ACL injury we decided to compare NWI measured on MRI scans between age-matched groups with acute ACL injury with those of the normal population. The purpose of this study was to measure intercondylar notch width on MRI scans in an immature population to determine if there was a difference between the population with ACL tears and a control group. We also wanted to assess age as a risk factor in an ACL injury population. We retrospectively analysed the MRI scans of 46 patients with ACL injuries and 44 patients with normal MRI findings who served as a control group for NWI measurements. For the ACL injury group we collected information from medical charts including age at the time of injury, gender, mechanism of injury, type of activity practised at the time of injury and prevalence of meniscal injury. Demographic data of the control group were comparable with those from the study group. We found a statistically significant (p<0.001) difference in the mean value of the intercondylar notch width between normal knees (0.2691) and the ACL injury population (0.2415). In the ACL injury group we did not find differences in NWI values with regard to gender, involved side, mechanism of injury and type of sport practised at the time of injury. A narrower intercondylar notch was found to be associated with the risk of ACL rupture in an immature population. The young group of athletes with ACL injury needs further study to prospectively assess the risk of knee injuries.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Risk factors for Anterior Cruciate Ligament injury in skeletally immature patients: analysis of intercondylar notch width using Magnetic Resonance Imaging

Domżalski

Grzelak

Gabos

2010

International Orthopaedics (SICOT)

124

120

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“…There is today growing evidence that male and female knees are different in geometry [5,6,10,14,[17][18][19]. For this reason, it seems logical to consider the development and use of gender-specific knee implants that more closely replicate the gender-specific anatomy, thereby optimizing the implant fit to the patient's individual geometry [1,[7][8][9].…”

Section: Discussionmentioning

confidence: 99%

The John Insall Award: Both Morphotype and Gender Influence the Shape of the Knee in Patients Undergoing TKA

Bellemans

Carpentier

Vandenneucker

et al. 2010

Clinical Orthopaedics &Amp; Related Research

117

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There is an ongoing debate whether gender differences in the dimensions of the knee should influence the design of TKA components. We hypothesized that not only gender but also the patient's morphotype determined the shape of the distal femur and proximal tibia and that this factor should be taken into account when designing gender-specific TKA implants. We reviewed all 1000 European white patients undergoing TKA between April 2003 and June 2007 and stratified each into one of three groups based on their anatomic constitution: endomorph, ectomorph, or mesomorph. Of the 250 smallest knees, 98% were female, whereas 81% of the 250 largest knees were male. In the group with intermediate-sized knees, female knees were narrower than male knees. Patients with smaller knees (predominantly female) demonstrated large variability between narrow and wide mediolateral dimensions irrespective of gender. The same was true for larger knees (predominantly male). This variability within gender could partially be explained by morphotypic variation. Patients with short and wide morphotype (endomorph) had, irrespective of gender, wider knees, whereas patients with long and narrow morphotype (ectomorph) had narrower knees.

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“…21 A template to position the knee during acquisition of notch views was suggested to reduce the variability. Analysis of the intercondylar notch has also been recorded by computed tomography 22 and by magnetic resonance imaging. 15 Magnetic resonance imaging scans have been analyzed for notch size and ACL volume.…”

Section: Used Measurements Frommentioning

confidence: 99%

The female ACL: why is it more prone to injury?

Ireland

2002

Orthopedic Clinics of North America

266

193

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EditorialThe female ACL: Why is it more prone to injury?Female athletes tear their anterior cruciate ligaments (ACL) at an alarmingly higher rate in certain sports including basketball, team handball, and soccer. The participation in sports by girls has increased dramatically, in recent times.1 The rapidly increasing numbers of females participating impacts the number of injuries. However, the rates of ACL injuries in comparable sports of basketball and soccer have remained alarmingly high with change in male-to-female ratios over the last 10 years. 2 The incidence of female to male is 3.5 times greater in basketball and 2.8 times greater in soccer. 3 The typical mechanism of injury is a rapid but awkward stop and anticipation of lateral movements. 4 The ACL tears in 70 ms.Dynamic movement patterns are very important factors contributing to ACL injury. 5 The extrinsic or changeable factors are controlled by the player and coaches. The intrinsic differences between male and female athletes that would explain why women tear the ACL two to eight times more frequently than men.

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Differences in Femoral Notch Anatomy between Men and Women

Abstract: Our results suggest that there is a difference in femoral notch and anterior cruciate ligament volume between men and women, which, in turn, is related to differences in height and weight.

Cited by 140 publications

References 16 publications

Risk factors for Anterior Cruciate Ligament injury in skeletally immature patients: analysis of intercondylar notch width using Magnetic Resonance Imaging

Risk factors for Anterior Cruciate Ligament injury in skeletally immature patients: analysis of intercondylar notch width using Magnetic Resonance Imaging

The John Insall Award: Both Morphotype and Gender Influence the Shape of the Knee in Patients Undergoing TKA

The female ACL: why is it more prone to injury?

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