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Morphometrical measurement of resected surface of medial and lateral proximal tibia for Chinese population

  • Knee
  • Published:
Knee Surgery, Sports Traumatology, Arthroscopy Aims and scope

Abstract

Purpose

The objective of this study was to analyze the morphology of the medial tibial plateau and lateral tibial plateau in Chinese knees and compared these measurements and features with those of commercial unicondylar tibial baseplates.

Methods

Three-dimensional knee models were reconstructed from computed tomography slices of 81 subjects. Among the series, 27 knees were from male subjects and 54 knees from female subjects. The dimensions and shape of the medial and lateral tibial plateaus were measured and compared with six commercially available unicondylar tibial baseplates.

Results

The results showed significant differences between the shapes of the medial and lateral tibial plateaus. For the lateral tibial plateau, the shape was symmetric about the mediolateral axis. The medial plateaus presented their widest mediolateral width in an obviously more posterior position than the lateral compartment. Additionally, the plateau aspect ratio decreased with increasing mediolateral dimensions, in contrast to the constant aspect ratio shown by conventional unicondylar knee prostheses.

Conclusion

Compartment-specific designs may optimize coverage between the prosthesis and resected tibial surface. The morphometrical measurements presented may allow manufacturers to design tibial baseplates that accommodate the structural variability between different ethnic groups.

Level of evidence

Prospective comparative study, Level II.

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Acknowledgments

The authors acknowledge the financial support from the Southern Taiwan Science Park (STSP) (BY-03-04-17-98) and the National Science Council (NSC 98-2221-E-195-001 and NSC 99-2221E-195-001).

Conflict of interest

No conflicts of interest on this manuscript.

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Correspondence to Cheng-Kung Cheng.

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Chang, TW., Huang, CH., McClean, C.J. et al. Morphometrical measurement of resected surface of medial and lateral proximal tibia for Chinese population. Knee Surg Sports Traumatol Arthrosc 20, 1730–1735 (2012). https://doi.org/10.1007/s00167-011-1749-9

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  • DOI: https://doi.org/10.1007/s00167-011-1749-9

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