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Radiographic Determination of Hip Rotation Center and Femoral Offset in Japanese Adults: A Preliminary Investigation toward the Preoperative Implications in Total Hip Arthroplasty.

Takamatsu T, Shishido T, Takahashi Y, Masaoka T, Tateiwa T, Kubo K, Endo K, Aoki M, Yamamoto K - Biomed Res Int (2015)

Bottom Line: The horizontal position of HRC was significantly correlated with the pelvic width in both genders (P = 0.0026 and 0.0010 for the males and the females, resp.).The vertical position of HRC was significantly correlated with the teardrop-sacroiliac distance in the males (P = 0.0003) and with the pelvic cavity height in the females (P = 0.0067).Our present findings might contribute to theoretical implications of an appropriate HRC position for Japanese OA patients in THA.

View Article: PubMed Central - PubMed

Affiliation: Department of Orthopaedic Surgery, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo 160-0023, Japan.

ABSTRACT
The values of hip rotation center (HRC) and femoral offset (FO) evaluated according to Caucasian anatomical landmarks have been regarded as a useful reference also for Japanese patients in total hip arthroplasty (THA). In a strict sense, however, since there can be racial differences among their anatomical morphologies, it is clinically important to reconsider those parameters for the Japanese. In the present study, in order to investigate correlations among hip and pelvic morphometric parameters, frontal radiographs were taken from 98 Japanese adults (60 males and 38 females) without acetabular dysplasia and arthropathy in the standing position. Their mean age was 62.0 ± 16.7 years. The horizontal position of HRC was significantly correlated with the pelvic width in both genders (P = 0.0026 and 0.0010 for the males and the females, resp.). The vertical position of HRC was significantly correlated with the teardrop-sacroiliac distance in the males (P = 0.0003) and with the pelvic cavity height in the females (P = 0.0067). However, in both genders, there were no correlations among FO and the other parameters analyzed in this study. Our present findings might contribute to theoretical implications of an appropriate HRC position for Japanese OA patients in THA.

No MeSH data available.


Related in: MedlinePlus

Correlation between pelvic cavity height (PCH) and vertical distance (VD, length in perpendicular line between HRC and tangential line to inferior edge of teardrop center) in the Japanese females. A linear line of fit is given in the diagram (r = 0.43, n = 38, P = 0.0067, and VD = 0.098 × PCH + 9.692).
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fig5: Correlation between pelvic cavity height (PCH) and vertical distance (VD, length in perpendicular line between HRC and tangential line to inferior edge of teardrop center) in the Japanese females. A linear line of fit is given in the diagram (r = 0.43, n = 38, P = 0.0067, and VD = 0.098 × PCH + 9.692).

Mentions: The mean values of HD, VD, and FO for the Japanese males were obtained as 37.8 ± 3.5, 15.8 ± 3.0, and 36.0 ± 5.8 mm, while those for the females were 33.3 ± 3.2, 15.7 ± 4.2, and 33.4 ± 4.9 mm, respectively (Table 1). Figures 3(a)-3(b) show the relationship between HD and PW in the males and females, respectively. As depicted in Figure 3, significant positive correlations were noted between HD and PW values in both genders (r = 0.381 and P = 0.0026 for the males, and r = 0.51 and P = 0.0010 for the females). The solid lines are a liner regression fit which indicates the relationship as follows: HD = 0.083 × PW + 12.657 (for the males) and HD = 0.091 × PW + 5.521 (for the females). In the Japanese males, a significant positive correlation was also observed between VD and TSD values (r = 0.45, P = 0.0003, and VD = 0.179 × TSD + 3.036) (Figure 4). On the other hand, in the Japanese females, a significant positive correlation was found between VD and PCH values (r = 0.43, P = 0.0067, and VD = 0.098 × PCH + 9.692) (Figure 5). However, in both genders, FO parameter was not correlated with any other morphological parameters analyzed in this study.


Radiographic Determination of Hip Rotation Center and Femoral Offset in Japanese Adults: A Preliminary Investigation toward the Preoperative Implications in Total Hip Arthroplasty.

Takamatsu T, Shishido T, Takahashi Y, Masaoka T, Tateiwa T, Kubo K, Endo K, Aoki M, Yamamoto K - Biomed Res Int (2015)

Correlation between pelvic cavity height (PCH) and vertical distance (VD, length in perpendicular line between HRC and tangential line to inferior edge of teardrop center) in the Japanese females. A linear line of fit is given in the diagram (r = 0.43, n = 38, P = 0.0067, and VD = 0.098 × PCH + 9.692).
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4631857&req=5

fig5: Correlation between pelvic cavity height (PCH) and vertical distance (VD, length in perpendicular line between HRC and tangential line to inferior edge of teardrop center) in the Japanese females. A linear line of fit is given in the diagram (r = 0.43, n = 38, P = 0.0067, and VD = 0.098 × PCH + 9.692).
Mentions: The mean values of HD, VD, and FO for the Japanese males were obtained as 37.8 ± 3.5, 15.8 ± 3.0, and 36.0 ± 5.8 mm, while those for the females were 33.3 ± 3.2, 15.7 ± 4.2, and 33.4 ± 4.9 mm, respectively (Table 1). Figures 3(a)-3(b) show the relationship between HD and PW in the males and females, respectively. As depicted in Figure 3, significant positive correlations were noted between HD and PW values in both genders (r = 0.381 and P = 0.0026 for the males, and r = 0.51 and P = 0.0010 for the females). The solid lines are a liner regression fit which indicates the relationship as follows: HD = 0.083 × PW + 12.657 (for the males) and HD = 0.091 × PW + 5.521 (for the females). In the Japanese males, a significant positive correlation was also observed between VD and TSD values (r = 0.45, P = 0.0003, and VD = 0.179 × TSD + 3.036) (Figure 4). On the other hand, in the Japanese females, a significant positive correlation was found between VD and PCH values (r = 0.43, P = 0.0067, and VD = 0.098 × PCH + 9.692) (Figure 5). However, in both genders, FO parameter was not correlated with any other morphological parameters analyzed in this study.

Bottom Line: The horizontal position of HRC was significantly correlated with the pelvic width in both genders (P = 0.0026 and 0.0010 for the males and the females, resp.).The vertical position of HRC was significantly correlated with the teardrop-sacroiliac distance in the males (P = 0.0003) and with the pelvic cavity height in the females (P = 0.0067).Our present findings might contribute to theoretical implications of an appropriate HRC position for Japanese OA patients in THA.

View Article: PubMed Central - PubMed

Affiliation: Department of Orthopaedic Surgery, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo 160-0023, Japan.

ABSTRACT
The values of hip rotation center (HRC) and femoral offset (FO) evaluated according to Caucasian anatomical landmarks have been regarded as a useful reference also for Japanese patients in total hip arthroplasty (THA). In a strict sense, however, since there can be racial differences among their anatomical morphologies, it is clinically important to reconsider those parameters for the Japanese. In the present study, in order to investigate correlations among hip and pelvic morphometric parameters, frontal radiographs were taken from 98 Japanese adults (60 males and 38 females) without acetabular dysplasia and arthropathy in the standing position. Their mean age was 62.0 ± 16.7 years. The horizontal position of HRC was significantly correlated with the pelvic width in both genders (P = 0.0026 and 0.0010 for the males and the females, resp.). The vertical position of HRC was significantly correlated with the teardrop-sacroiliac distance in the males (P = 0.0003) and with the pelvic cavity height in the females (P = 0.0067). However, in both genders, there were no correlations among FO and the other parameters analyzed in this study. Our present findings might contribute to theoretical implications of an appropriate HRC position for Japanese OA patients in THA.

No MeSH data available.


Related in: MedlinePlus