Intraoperative Morphometric Study of Gender Differences in Asian Femurs

Chin, Pak Lin; Tey, Tze Tong; Ibrahim, Mohd Yusof Bin; Chia, Shi‐Lu; Yeo, Seng Jin; Lo, Ngai Nung

doi:10.1016/j.arth.2010.11.012

Cited by 40 publications

(33 citation statements)

References 11 publications

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“…Therefore, sex differences in posterior condylar offset size appear to be related to sex differences in femoral size, which means that the relationship of the posterior condylar articular surface to the posterior cortex of the femoral shaft was not different between males and females. These results are supported by other anatomic studies of human knees [6,11,21]. Li et al [11] showed that while there were absolute size differences between knees in males and females, there was no sex difference in aspect ratios.…”

Section: Discussionsupporting

confidence: 65%

“…van den Heever et al [21] attempted to classify distal femoral morphometric features using a neural network and reported that when corrected for size, sex and ethnic differences were diminished [21]. Finally, Chin et al [6] observed in a group of Asian patients, that knees undergoing TKA showed sex variations in mediolateral dimensions, however, the AP dimensions of the condyles were similar between the sexes. The implication of these findings is that a sex-specific knee implant is not necessary to reproduce posterior condylar offset in women.…”

Section: Discussionmentioning

confidence: 99%

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No Sex Differences Exist in Posterior Condylar Offsets of the Knee

Voleti

Stephenson

Lotke

et al. 2015

Clinical Orthopaedics &Amp; Related Research

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Background Restoration of posterior condylar offset during TKA is believed to be important to improving knee kinematics, maximizing ROM, and minimizing flexion instability. However, controversy exists regarding whether there are important anatomic differences between sexes and whether a unisex knee prosthesis can restore the anatomy of knees in males and females. Questions/purposes The purposes of our study were to determine if sex differences exist in (1) absolute posterior condylar offset size, (2) relative posterior condylar offset size in relation to total condylar height, and (3) posterior condylar articular cartilage thickness.Methods We identified 100 patients (50 men and 50 women) without a history of arthritis, deformity, dysplasia, osteochondral defect, fracture, or surgery about the knee who had MRI of the knee performed. All MR images were ordered by primary care medical physicians for evaluation of nonspecific knee pain. Using a previously described three-dimensional MRI protocol, we measured posterior condylar offset, total condylar height, and articular cartilage thickness at the medial and lateral femoral condyles and compared values to evaluate for potential sex differences. We performed an a priori power calculation using a 2-mm posterior condylar offset difference as the minimum clinically important difference; with 2n = 100, our power to detect such a difference was 99.8%.

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Section: Discussionsupporting

confidence: 65%

Section: Discussionmentioning

confidence: 99%

No Sex Differences Exist in Posterior Condylar Offsets of the Knee

Voleti

Stephenson

Lotke

et al. 2015

Clinical Orthopaedics &Amp; Related Research

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“…Most of the morphometric studies are done with measurement by radiographs, CT scans or magnetic resonance imaging techniques which are indirect methods [2,4,[10][11][12][13][14][15]. There are studies which suggest that indirect method of measurement are found inaccurate and not precise even though they are corrected by the projection method as well as by the resolutions.…”

Section: Discussionmentioning

confidence: 99%

“…Recent studies are based on difference between gender and ethnic groups. [3,4,[10][11][12][13] Most of the morphometric studies are done with measurement by radiographs, CT scans or Magnetic resonance imaging techniques [2,4,[10][11][12][13][14][15]. There are few data available in which the study is done over dry femur by direct observations [3,16,17].…”

Section: Introductionmentioning

confidence: 99%

Morphometric Study of Lower End of Dry Femur in Gujarat Region and Its Clinical Implication

Zalawadia¹,

Parekh²,

Patel³

2017

IJAR

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“…[4][5][6][7][8][9][10][11][12][13] Compared with Caucasians, Asians have narrower distal femurs and thus a larger anteroposterior/mediolateral ratio or aspect ratio. [14][15][16][17] The higher aspect ratio leads to more severe mediolateral overhang of the femoral component and thus Asian females are at higher risk of soft tissue impingement and poorer outcome following TKA. [18][19][20] Asian women with conventional LPS knee prosthesis of size E and larger tend to have mediolateral overhang of the femoral component resulting in soft tissue impingement after TKA.…”

Section: Introductionmentioning

confidence: 99%

Gender-Specific Total Knee Arthroplasty in Singaporean Women

Lim

Chong

Ling

et al. 2015

J Orthop Surg (Hong Kong)

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Purpose.To compare the outcome of 145 women who underwent conventional total knee arthroplasty (TKA) with 77 women who underwent genderspecific TKA. Methods. Records of 222 women who underwent primary TKA using a conventional (n=145) or genderspecific (n=77) size E or F prosthesis for end-stage osteoarthritis were reviewed. The gender-specific prosthesis has a narrower mediolateral dimension. Patients were assessed for flexion, Oxford Knee Score, Knee Society function and knee scores, and Short Form-36 Health Survey preoperatively and postoperatively (at 6 months and 2 years). Results. The 2 groups were comparable in terms of age (67.8 vs. 68.1 years, p=0.789), body mass index (28.6 vs. 27.8 kg/m 2 , p=0.189), and preoperative scores. 12 women with conventional TKA and 4 women with gender-specific TKA were lost to followup. Compared with women with conventional TKA, women with gender-specific TKA had better flexion at 6 months (116° vs. 121.9°, p=0.007) and 2 years (118.7° vs. 124.6°, p=0.006), better bodily pain score at 2 years

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Intraoperative Morphometric Study of Gender Differences in Asian Femurs

Cited by 40 publications

References 11 publications

No Sex Differences Exist in Posterior Condylar Offsets of the Knee

No Sex Differences Exist in Posterior Condylar Offsets of the Knee

Morphometric Study of Lower End of Dry Femur in Gujarat Region and Its Clinical Implication

Gender-Specific Total Knee Arthroplasty in Singaporean Women

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