Morphometrical measurements of resected surface of femurs in Chinese knees: Correlation to the sizing of current femoral implants

Ho, Wan‐Ling; Cheng, Cheng‐Kung; Liau, Jiann‐Jong

doi:10.1016/j.knee.2005.05.002

Cited by 124 publications

(120 citation statements)

References 8 publications

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“…Asian knees are found to be generally smaller than the Western population as suggested by various studies [3][4][5]9]. Since maximum resected surface of the knee has to be covered by the components of the knee implants [2,9], it is important to know the morphology of the Indian knees to design or validate knee prostheses for the Indian population.…”

Section: Discussionmentioning

confidence: 99%

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3D Morphological Study of the Indian Arthritic Knee: Comparison with Other Ethnic Groups and Conformity of Current TKA Implant*

Shah¹,

Ghyar²,

Ravi³

et al. 2013

OJRA

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Background: Studies have shown that there are striking variations in knee morphology between Asian and Western population. However, most of the existing total knee arthroplasty (TKA) implants are designed to suit the anatomy of Western population. Our study investigated anthropometry of Indian arthritic knees and compared them to international ethnic groups. Methods: Computed tomography was used to create 3D knee models and obtain anthropometric data of distal femur and proximal tibia of Indian arthritic knees. Femoral measurements included mediolateral length, medial and lateral anteroposterior length, medial and lateral condylar width and aspect ratio. Tibial measurements included mediolateral length, medial, lateral and central anteroposterior length and aspect ratio. A preoperative virtual implantation using Western TKA implants was carried out to visualize anatomical conformity. Results: Statistical analysis results showed that Indian males had significantly larger femoral and tibial mediolateral and anteroposterior width than Indian females; however, femoral and tibial aspect ratio was similar for both. In case of females, significant difference was observed between medial and lateral condylar widths. When compared to knee anthropometry of other ethnic groups, femoral and tibial aspect ratio of Indian knees was found to be similar to the Asian population and different from the Western population. The virtual implantation showed overhang of the femoral component in both lateral and medial regions. Conclusion: Morphological mismatch between Western and Indian knees established the fact that Western implants have drawbacks when implanted in Indian patients. The study also provided a basis for designing gender-specific TKA implants for the Indian population.

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Section: Discussionmentioning

confidence: 99%

“…These factors rely heavily on the size matching of the implant with the resected knee. Commercially available TKA implants do not cater to racial anthropometric differences as suggested by some recent studies [3][4][5]. Most of these implants are designed according to the anthropometric data of the Western population.…”

Section: Introductionmentioning

confidence: 99%

3D Morphological Study of the Indian Arthritic Knee: Comparison with Other Ethnic Groups and Conformity of Current TKA Implant*

Shah¹,

Ghyar²,

Ravi³

et al. 2013

OJRA

View full text Add to dashboard Cite

show abstract

“…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]. However, even within gender there is high variability in distal femoral and proximal tibial dimensions among patients, which suggests other factors than gender seem to have an influence as well [15]. Also, it is well known that patients undergoing TKA are predominantly female and therefore the need for gender-specific implants may be further questioned [7,11].…”

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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“…Several authors have demonstrated distal femoral morphological differences, with the female knee tending to be slightly narrower than the male knee for any given anteroposterior dimension [7,10]. However, there is substantial variability in these patterns [7,10], and there are more differences between races than between genders [11,14,[17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

The John Insall Award: Gender-specific Total Knee Replacement: Prospectively Collected Clinical Outcomes

MacDonald

Charron

Bourne

et al. 2008

Clinical Orthopaedics &Amp; Related Research

140

122

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Morphometrical measurements of resected surface of femurs in Chinese knees: Correlation to the sizing of current femoral implants

Cited by 124 publications

References 8 publications

3D Morphological Study of the Indian Arthritic Knee: Comparison with Other Ethnic Groups and Conformity of Current TKA Implant*

3D Morphological Study of the Indian Arthritic Knee: Comparison with Other Ethnic Groups and Conformity of Current TKA Implant*

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

The John Insall Award: Gender-specific Total Knee Replacement: Prospectively Collected Clinical Outcomes

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