A Study of Korean Femoral Geometry

Khang, Gon; Choi, Kuiwon; Kim, Cheol-Sang; Yang, Jong Soo; Bae, Tae-Soo

doi:10.1097/00003086-200301000-00019

Cited by 44 publications

(27 citation statements)

References 10 publications

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“…However, it is difficult to deduce what the parameters correspond to for studies with ambiguous parameter definitions (Hoaglund and Low, 1980;Rubin et al, 1992;Noble et al, 1988Noble et al, , 1995Sugano et al, 1999;Kukla et al, 2002;Atilla et al, 2007). Decreased bone mineral density, which is a risk factor for fracture of the femur, risk factors such as increased body mass index, advanced age, long stature and sex, as well as greater diameter of the femoral head, are considered distinct risk factors for fracture of the proximal femur (Noble et al, 1988;Ferris et al, 1989;Yang et al, 1999;Khang et al, 2003;Calis et al, 2004;Gregory et al, 2004;Irdesel and Ari, 2006;Atilla et al, 2007).…”

Section: Femoral Head Diameter (Fhd)mentioning

confidence: 99%

“…It was emphasized that FNL should be taken into consideration particularly in total femoral arthroplasty component design and eventually in surgical interventions in hip joints despite the fact that it is measured by researchers by taking different reference points in respect of its parameter identification (Isaac et al, 1997, Noble et al, 1988, Khang et al, 2003, Mahaisavariya et al, 2002. Braun et al (2007) stated in their studies that successful total hip arthroplasty with the Metha shortstem prosthesis (Braun Aesculap; Tuttlingen, Germany) depends on the correct indication and an accurate preoperative measurement of the femoral bone shape, and intraoperatively, that the bone quality, osteotomy and implant position of are of the particular importance.…”

Section: Femoral Neck Length (Fnl)mentioning

confidence: 99%

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Morphometric evaluation of proximal femur in patients with unilateral total hip prosthesis

et al. 2013

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It is important to know the morphometric characteristics of the proximal femur. This is necessary to reduce the risk of complications related to surgical procedures performed in the area due to vascular, metabolic, or traumatic causes. It is of importance for achieving the alignment of the prosthesis to be implanted as well. The aim of this study was to evaluate the morphometric characteristics of the proximal femur and to establish a database for making and performing total hip prosthesis. Anteroposterior (AP) pelvic radiographs of 162 cases, with a mean age of 65.6 years, who had undergone unilateral total hip arthroplasty were used in this study. Femoral head diameter (FHD), femoral neck width (FNW), femoral neck length (FNL), femoral neck axis length (FNAL), intertrochanteric line length (ILL), and neck-shaft angle (NSA) were measured on radiographs obtained digitally using setrapacs media. FHD was found to be 48.1 ± 3.7 mm, FNW 35.4 ± 4.2 mm, FNL 30.8 ± 6.1 mm, FNAL 98.6 ± 9.4 mm, ILL 81.1 ± 7.9 mm, and NSA 130.4 ± 5.1° on average. The comparison of the mean values for females and males revealed a statistically significant difference between the FHD, FNW, FNL, FNAL, and ILL (P = 0.000). There was no statistically significant difference in NSA between males and females (P = 0.356). A weak correlation was found between age and parameter values using correlation analysis (r < 0.24, P > 0.05). In morphometric assessment of the proximal femur, taking into consideration regional and sexual differences is of importance for prosthesis design and surgical success.

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Section: Femoral Head Diameter (Fhd)mentioning

confidence: 99%

Section: Femoral Neck Length (Fnl)mentioning

confidence: 99%

Morphometric evaluation of proximal femur in patients with unilateral total hip prosthesis

et al. 2013

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“…The AP width of the cortical and medullary canals was calculated on the lateral view at 2 cm above the CLT and 2 cm, 4 cm, and 10 cm below the CLT. The canal flare index was calculated as the ratio between the medullary widths of the two levels: 2 cm proximal to the lesser trochanter and at the canal isthmus [8]. The height of dislocation was calculated as the distance from the head-neck junction to the lower edge of the teardrop [2].…”

Section: Methodsmentioning

confidence: 99%

Femoral Morphologic Differences in Subtypes of High Developmental Dislocation of the Hip

Zhou

Liu

et al. 2010

Clinical Orthopaedics &Amp; Related Research

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Background Previous studies show the shape of the femur in developmental dislocation of the hip (DDH) becomes more abnormal with increasing subluxation. Two kinds of high dislocations associated with DDH have been observed in clinical practice, one with (Type C1) and one without (Type C2) a false acetabulum. The presence or absence of a false acetabulum in high dislocated hips is associated with different loading patterns and could influence the development and shape of the proximal femur. Questions/purposes We therefore determined whether (1) the proximal femoral shape and dimension in Type C1 and Type C2 hips differ from each other, and (2) the femur dislocated with the same height in Types C1 and C2 hips. Patients and Methods We examined the following variables on 54 proximal femurs from 54 patients with high DDH (28 Type C1 hips and 26 Type C2 hips) on AP and lateral radiographs; the ML widths of the cortical and medullary canals, height of the femoral head, height of dislocation, and height of the greater trochanter. Reproducibility of the measurements was tested by two researchers with high interobserver and intraobserver agreement.Results The proximal femur in Type C2 hips was narrower and stovepipe shaped, with a smaller flare index (2.7 ± 0.6), compared with Type C1 hips (3.5 ± 1.2). The proximal femur migrated an average of 18 mm more superiorly in Type C2 than in Type C1 hips. Conclusions Our data confirm distinctions in the shape of the proximal femur in the presence and absence of a false acetabulum. Clinical Relevance Owing to the abnormal shapes, special implants of different geometries or modular stems may be needed for reconstruction Type C2 high dislocations.

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“…Although the CT-based method was applied in the 50 femurs of Fuku study [9], it may not be sufficient enough to understand the femoral geometry because of individual variations. Khang et al [10] used CT to investigate the femurs of 38 femurs extracted from cadavers and 200 femurs of healthy Korean subjects. The measurement results show that femurs from Korean are different from femurs from American or European.…”

Section: Related Workmentioning

confidence: 99%

Design of patient-specific hip implants based on the 3D geometry of the human femur

Jun

Choi²

2010

Advances in Engineering Software

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A Study of Korean Femoral Geometry

Cited by 44 publications

References 10 publications

Morphometric evaluation of proximal femur in patients with unilateral total hip prosthesis

Morphometric evaluation of proximal femur in patients with unilateral total hip prosthesis

Femoral Morphologic Differences in Subtypes of High Developmental Dislocation of the Hip

Design of patient-specific hip implants based on the 3D geometry of the human femur

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