Gap Deviation after Cementation in Computer Assisted Navigation TKA

8 pages•Published: October 26, 2019

Chumroonkiet Leelasestaporn and Tomorn Tarnpichprasert

Abstract

INTRODUCTION
The outcome of knee replacement depended on alignment, balancing of soft tissue, symmetrical and
rectangular gaps adjustment, and accurate implant placement. Many techniques have been used to
improve these factors including navigator assisted knee replacement, which has precise bone cut
and accurate soft tissue balancing. However, cementation may change gaps and alignment that can
affect outcome of knee replacement.

OBJECTIVE
To compare gaps and alignment after cementation in computer assisted total knee replacement

MATERIAL AND METHODS
Prospective collecting data all cases performed computer assisted total knee replacement with
cruciate retaining - mobile bearing implant design. Gaps and mechanical axis was collected and
compered between complete trial prosthesis and final cementation.

RESULT
Lateral extension gap and flexion contracture significantly increase after cementation when
compared with trial implantation [0.6 mm (P = 0.021), 2.7o (P = 0.00)]. The mechanical axis was not
deviated after cementation (P = 1.00).

CONCLUSION
Cementation is able to influence gap and alignment. It may be useful to control and recheck gap and
alignment with navigation system during cementation. Clinical correlation needs further
investigation.

Keyphrases: cement technique, computer assisted tka, gaps balancing, mechanical axis

In: Patrick Meere and Ferdinando Rodriguez Y Baena (editors). CAOS 2019. The 19th Annual Meeting of the International Society for Computer Assisted Orthopaedic Surgery, vol 3, pages 215-222.

Links:	https://easychair.org/publications/paper/S3sq
	https://doi.org/10.29007/t7tz

BibTeX entry

@inproceedings{CAOS2019:Gap_Deviation_after_Cementation,
  author    = {Chumroonkiet Leelasestaporn and Tomorn Tarnpichprasert},
  title     = {Gap Deviation after Cementation in Computer Assisted Navigation TKA},
  booktitle = {CAOS 2019. The 19th Annual Meeting of the International Society for Computer Assisted Orthopaedic Surgery},
  editor    = {Patrick Meere and Ferdinando Rodriguez Y Baena},
  series    = {EPiC Series in Health Sciences},
  volume    = {3},
  publisher = {EasyChair},
  bibsource = {EasyChair, https://easychair.org},
  issn      = {2398-5305},
  url       = {/publications/paper/S3sq},
  doi       = {10.29007/t7tz},
  pages     = {215-222},
  year      = {2019}}

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