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Year : 2019  |  Volume : 22  |  Issue : 10  |  Page : 1423-1429

The morphology of proximal tibia geometry amongst the Igbos of South East Nigeria and its implication in total knee replacement

Department of Anatomy, University of Nigeria, Enugu Campus, Enugu, Nigeria

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Dr. E Esom
Department of Anatomy, University of Nigeria, Enugu Campus, Enugu
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/njcp.njcp_93_19

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Background: The morphological parameters of the proximal tibia play a major role in total knee replacement and there are ethnic and gender variations to these parameters. Aim: To evaluate parameters of the proximal tibia geometry amongst the Igbos of South Eastern Nigeria and discuss the clinical implications in total knee replacement. Methods: The proximal tibia parameters of 558 adult tibiae bones, 300 right-sided and 258 left-sided, collected from the osteological unit of the department of anatomy University of Nigeria Enugu campus were measured using a Venier calipers. Results: The values of the determined parameters are as follows: anterior posterior dimension (APD): 5.50 cm, medial lateral dimension (MLD):7.53 ± 5.56 cm, proximal length (PL): 7.32 ± 0.67 cm, proximal width (PW) CM: 4.10 ± 0.30 cm, medial tibia posterior slope (MTPS):11.36 ± 4.15° and lateral tibia posterior slope (LTPS):5.65 ± 2.72°. The correlation test between these parameters of the proximal tibia shows a strong significant correlation between LPTS and MPTS (r =0.814, P <.001). The comparison of the means of the MPTS of both sides using independent samples t test shows a mean difference that is not significant (p =0.628). A comparison of the values with other populations shows significant mean difference for MLD with that of Chinese and American populations (p <.05). The mean difference between the APD of this study and the Chinese is significant (p =0.007). A comparison of MPTS and LPTS for Malaysian, Chinese, and white Americans shows a significance difference for all the three populations (p <.05). Conclusion: These determined values should be taken into consideration during tibia surface coverage in total knee replacement amongst the Igbo population.

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