Gender differences in morphology exist in posterior condylar offsets of the knee in Korean population

Yong Gon Koh, Ji Hoon Nam, Hyun Seok Chung, Ho Joong Kim, Heoung Jae Chun, Kyoung Tak Kang

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Purpose: This study aimed to analyze the morphometric data from magnetic resonance images of arthritic knees in Korean adults, and to identify the existence of morphological differences of femoral posterior condylar offset (PCO) between genders. Methods: The differences in anthropometric PCO data in 975 patients (825 female and 150 male) were evaluated. The distances from the anterior and posterior femoral shaft cortex line to the most posterior femoral condyle tangent line were defined as the anterior–posterior dimension (AP) and the PCO. The PCO ratio (PCOR) was calculated as PCO/AP. Results: The medial PCO was greater than the lateral PCO (26.3 ± 2.2 vs. 24.3 ± 2.3 mm, p < 0.01). This difference was observed in both female patients (medial: 26.2 ± 2.2 mm vs. lateral: 24.2 ± 2.2 mm, p < 0.01) and male patients (medial: 26.8 ± 2.3 mm vs. lateral: 24.8 ± 2.4 mm, p < 0.01). The medial and lateral PCO values were also greater in male patients than in female ones (p < 0.01). In contrast, PCOR was greater in female patients than in male ones, both in the medial and lateral femoral condyles (p < 0.01). Conclusions: It was shown that medial and lateral PCO and PCOR were asymmetric, and that there was gender difference in Korean population in our study. In addition, our data showed that the PCOR of contemporary TKAs may be small for Asian patients that may not be sufficient to meet the needs of the Korean patient population. These results confirm that a gender-specific femoral component design is necessary to recreate the PCO for male and female Asian populations. Level of evidence: Non-consecutive patients, Level III.

Original languageEnglish
Pages (from-to)1628-1634
Number of pages7
JournalKnee Surgery, Sports Traumatology, Arthroscopy
Volume27
Issue number5
DOIs
Publication statusPublished - 2019 May 1

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Knee
Thigh
Population
Bone and Bones
Arthritis
Magnetic Resonance Spectroscopy

All Science Journal Classification (ASJC) codes

  • Surgery
  • Orthopedics and Sports Medicine

Cite this

Koh, Yong Gon ; Nam, Ji Hoon ; Chung, Hyun Seok ; Kim, Ho Joong ; Chun, Heoung Jae ; Kang, Kyoung Tak. / Gender differences in morphology exist in posterior condylar offsets of the knee in Korean population. In: Knee Surgery, Sports Traumatology, Arthroscopy. 2019 ; Vol. 27, No. 5. pp. 1628-1634.
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abstract = "Purpose: This study aimed to analyze the morphometric data from magnetic resonance images of arthritic knees in Korean adults, and to identify the existence of morphological differences of femoral posterior condylar offset (PCO) between genders. Methods: The differences in anthropometric PCO data in 975 patients (825 female and 150 male) were evaluated. The distances from the anterior and posterior femoral shaft cortex line to the most posterior femoral condyle tangent line were defined as the anterior–posterior dimension (AP) and the PCO. The PCO ratio (PCOR) was calculated as PCO/AP. Results: The medial PCO was greater than the lateral PCO (26.3 ± 2.2 vs. 24.3 ± 2.3 mm, p < 0.01). This difference was observed in both female patients (medial: 26.2 ± 2.2 mm vs. lateral: 24.2 ± 2.2 mm, p < 0.01) and male patients (medial: 26.8 ± 2.3 mm vs. lateral: 24.8 ± 2.4 mm, p < 0.01). The medial and lateral PCO values were also greater in male patients than in female ones (p < 0.01). In contrast, PCOR was greater in female patients than in male ones, both in the medial and lateral femoral condyles (p < 0.01). Conclusions: It was shown that medial and lateral PCO and PCOR were asymmetric, and that there was gender difference in Korean population in our study. In addition, our data showed that the PCOR of contemporary TKAs may be small for Asian patients that may not be sufficient to meet the needs of the Korean patient population. These results confirm that a gender-specific femoral component design is necessary to recreate the PCO for male and female Asian populations. Level of evidence: Non-consecutive patients, Level III.",
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Gender differences in morphology exist in posterior condylar offsets of the knee in Korean population. / Koh, Yong Gon; Nam, Ji Hoon; Chung, Hyun Seok; Kim, Ho Joong; Chun, Heoung Jae; Kang, Kyoung Tak.

In: Knee Surgery, Sports Traumatology, Arthroscopy, Vol. 27, No. 5, 01.05.2019, p. 1628-1634.

Research output: Contribution to journalArticle

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T1 - Gender differences in morphology exist in posterior condylar offsets of the knee in Korean population

AU - Koh, Yong Gon

AU - Nam, Ji Hoon

AU - Chung, Hyun Seok

AU - Kim, Ho Joong

AU - Chun, Heoung Jae

AU - Kang, Kyoung Tak

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N2 - Purpose: This study aimed to analyze the morphometric data from magnetic resonance images of arthritic knees in Korean adults, and to identify the existence of morphological differences of femoral posterior condylar offset (PCO) between genders. Methods: The differences in anthropometric PCO data in 975 patients (825 female and 150 male) were evaluated. The distances from the anterior and posterior femoral shaft cortex line to the most posterior femoral condyle tangent line were defined as the anterior–posterior dimension (AP) and the PCO. The PCO ratio (PCOR) was calculated as PCO/AP. Results: The medial PCO was greater than the lateral PCO (26.3 ± 2.2 vs. 24.3 ± 2.3 mm, p < 0.01). This difference was observed in both female patients (medial: 26.2 ± 2.2 mm vs. lateral: 24.2 ± 2.2 mm, p < 0.01) and male patients (medial: 26.8 ± 2.3 mm vs. lateral: 24.8 ± 2.4 mm, p < 0.01). The medial and lateral PCO values were also greater in male patients than in female ones (p < 0.01). In contrast, PCOR was greater in female patients than in male ones, both in the medial and lateral femoral condyles (p < 0.01). Conclusions: It was shown that medial and lateral PCO and PCOR were asymmetric, and that there was gender difference in Korean population in our study. In addition, our data showed that the PCOR of contemporary TKAs may be small for Asian patients that may not be sufficient to meet the needs of the Korean patient population. These results confirm that a gender-specific femoral component design is necessary to recreate the PCO for male and female Asian populations. Level of evidence: Non-consecutive patients, Level III.

AB - Purpose: This study aimed to analyze the morphometric data from magnetic resonance images of arthritic knees in Korean adults, and to identify the existence of morphological differences of femoral posterior condylar offset (PCO) between genders. Methods: The differences in anthropometric PCO data in 975 patients (825 female and 150 male) were evaluated. The distances from the anterior and posterior femoral shaft cortex line to the most posterior femoral condyle tangent line were defined as the anterior–posterior dimension (AP) and the PCO. The PCO ratio (PCOR) was calculated as PCO/AP. Results: The medial PCO was greater than the lateral PCO (26.3 ± 2.2 vs. 24.3 ± 2.3 mm, p < 0.01). This difference was observed in both female patients (medial: 26.2 ± 2.2 mm vs. lateral: 24.2 ± 2.2 mm, p < 0.01) and male patients (medial: 26.8 ± 2.3 mm vs. lateral: 24.8 ± 2.4 mm, p < 0.01). The medial and lateral PCO values were also greater in male patients than in female ones (p < 0.01). In contrast, PCOR was greater in female patients than in male ones, both in the medial and lateral femoral condyles (p < 0.01). Conclusions: It was shown that medial and lateral PCO and PCOR were asymmetric, and that there was gender difference in Korean population in our study. In addition, our data showed that the PCOR of contemporary TKAs may be small for Asian patients that may not be sufficient to meet the needs of the Korean patient population. These results confirm that a gender-specific femoral component design is necessary to recreate the PCO for male and female Asian populations. Level of evidence: Non-consecutive patients, Level III.

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