Femoral head diameter in the Malaysian population

Lee CK, Kwan MK, Merican AM, Ng WM, Saw LB, Teh KK, Krishnan M, Ramiah R
Correspondence: Dr Lee Chee Kean, kenetto@hotmail.com

ABSTRACT
INTRODUCTION Hip arthroplasty is commonly performed worldwide. The objective of this study was to determine the diameter of the femoral head in the Malaysian population in relation to gender and race (i.e. among Malay, Chinese and Indian patients).
METHODS This was a retrospective cross-sectional study performed between January 1995 and December 2006, evaluating the femoral head diameters of all patients aged 50 years and above who underwent hemiarthroplasty at two major hospitals in Malaysia.
RESULTS A total of 945 femoral heads (663 women, 282 men) were evaluated. The mean age of the patients in our cohort was 75.2 ± 9.4 (range 50–101) years. The mean femoral head diameter (with intact articular cartilage) was 44.9 ± 3.2 (range 38–54) mm. In our study, men had a significantly larger mean femoral head diameter than women (47.7 ± 2.8 mm vs. 43.7 ± 2.4 mm; p < 0.05). Patients of Chinese ethnicity were also found to have significantly larger femoral head diameters, when compared among the three races studied (p < 0.05).
CONCLUSION Malaysians have a mean femoral head diameter of 44.9 ± 3.2 mm. Among our patients, Chinese patients had a significantly larger femoral head size than Malay and Indian patients. We also found that, in our cohort, men had significantly larger femoral head diameters than women.

Keywords: Chinese, femoral head diameter, Indian, Malay, Malaysia
Singapore Med J 2014; 55(8): 436-438; http://dx.doi.org/10.11622/smedj.2014103

http://smj.org.sg/sites/default/files/5508/5508a5.pdf

REFERENCES

1. National Joint Registry. National Joint Registry for England, Wales and Northern Ireland – 10th Annual Report 2013. In: National Joint Registry – Annual Reports [online]. Available at: http://www.njrcentre.org.uk/njrcentre/Portals/0/Documents/England/Report.... Accessed July 10, 2014.

2. American Joint Replacement Registry. American Joint Replacement Registry Fall 2013 Update. In: AJRR Home [online]. Available at: http://teamwork.aaos.org/ajrr/AJRR%20Documents/AJRR%20Fall%202013_F11062.... Accessed July 10, 2014.

3. Harkess JW. Arthroplasty of hip. In: Canale ST, Beatty JH, eds. Campbell's operative orthopaedics. 10th ed. Philadelphia: Mosby Elsevier, 2007: 348?371.

4. Noble PC, Alexander JW, Lindahl LJ, et al. The anatomic basis of femoral componnet design. Clin Orthop Relat Res 1988; 235:148-65. PMid:3416522

5. Hoaglund FT, Low WD. Anatomy of the femoral neck and head, with comparative data from Caucasians and Hong Kong Chinese. Clin Orthop Relat Res 1980; 152:10-6. PMid:7438592

6. Massin P, Geais L, Astoin E, Simondi M, Lavaste F. The anatomic basis for the concept of lateralized femoral stems: a frontal plane radiographic study of the proximal femur. J Arthroplasty 2000; 15:93-101. http://dx.doi.org/10.1016/S0883-5403(00)91337-8

7. Chauhan R, Paul S, Dhaon BK. Anatomical parameters of North Indian hip joints: cadaveric study. J Anat Soc India 2002; 51:39-42.

8. Department of Statistics Malaysia. Census of Population and Housing Malaysia 2000 [online]. Available at: http://www.statistics.gov.my/eng/index.php. Accessed September 5, 2008.

9. Department of Statistics Malaysia. Population (Updated 5 September 2008) [online]. Available at: http://www.statistics.gov.my/eng/index.php. Accessed September 5, 2008.

10. Maggi S, Kelsey JL, Litvak J, Keyse SP. Incidence of hip fractures in the elderly: a cross-national analysis. Osteoporos Int 1991; 1:232-41. http://dx.doi.org/10.1007/BF03187467

11. Zhang YY, Liu PY, Lu Y, et al. Race and sex differences and contribution of height: a study on bone size in healthy Caucasians and Chinese. Am J Hum Biol 2005; 17:568-75. http://dx.doi.org/10.1002/ajhb.20427

12. Wyler A, Bousson V, Bergot C, et al. Hyaline cartilage thickness in radiographically normal cadaveric hips: comparison of spiral CT arthrographic and macroscopic measurements. Radiology 2007; 242:441?9. http://dx.doi.org/10.1148/radiol.2422051393

13. Smith & Nephew. Birmingham Hip Resurfacing System [online]. Available at: http://www.smith-nephew.com/documents/nl-bhr-surgicaltechnique.pdf. Accessed July 10, 2014.