Comparison of femoral graft bending angle and tunnel length between transtibial technique and transportal technique in anterior cruciate ligament reconstruction

Joon Ho Wang, Jae Gyoon Kim, Do Kyung Lee, Hong Chul Lim, Jin Hwan Ahn

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

Purpose: To investigate which technique would reduce bending stress at the femoral tunnel aperture and make short tunnel length after ACL reconstruction by comparing the femoral graft bending angle and tunnel length between the single-bundle (SB) transtibial (TT) and double-bundle (DB) transportal (TP) technique using three-dimensional-computed tomography using OsiriX® imaging software. Methods: Forty-nine patients underwent an ACL reconstruction using a SB TT (Group I, 20 patients) and DB TP (Group II, 29 patients) technique. Femoral graft bending angle and femoral tunnel length were measured by CT image using OsiriX® imaging software. Groups I and II were compared, and statistical analysis was performed using SPSS software. Results: The mean anteromedial (AM) and posterolateral (PL) femoral graft bending angle of group II (111. 5 ± 8. 8° and 118. 9 ± 9. 8°, respectively) was significantly more acute than that of group I (125. 3 ± 11. 1°) (P < 0. 001, P = 0. 04). The mean femoral tunnel length of group I was significantly longer than that of group II (P = 0. 001). Conclusions: The femoral graft bending angle and the femoral tunnel length of the TP technique performed in the maximally flexed knee position was more acute and shorter than those of the TT technique after ACL reconstruction. This might increase the bending stress at the femoral tunnel aperture and shorter graft length in the tunnel after an ACL reconstruction using TP technique compared to the TT technique. Level of evidence: III.

Original languageEnglish
Pages (from-to)1584-1593
Number of pages10
JournalKnee Surgery, Sports Traumatology, Arthroscopy
Volume20
Issue number8
DOIs
Publication statusPublished - 2012 Aug 1

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Anterior Cruciate Ligament Reconstruction
Thigh
Transplants
Software
Knee
Tomography

Keywords

  • 3D-CT
  • Anterior cruciate ligament
  • Knee
  • OsiriX
  • Transportal
  • Transtibial

ASJC Scopus subject areas

  • Surgery
  • Orthopedics and Sports Medicine

Cite this

Comparison of femoral graft bending angle and tunnel length between transtibial technique and transportal technique in anterior cruciate ligament reconstruction. / Wang, Joon Ho; Kim, Jae Gyoon; Lee, Do Kyung; Lim, Hong Chul; Ahn, Jin Hwan.

In: Knee Surgery, Sports Traumatology, Arthroscopy, Vol. 20, No. 8, 01.08.2012, p. 1584-1593.

Research output: Contribution to journalArticle

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T1 - Comparison of femoral graft bending angle and tunnel length between transtibial technique and transportal technique in anterior cruciate ligament reconstruction

AU - Wang, Joon Ho

AU - Kim, Jae Gyoon

AU - Lee, Do Kyung

AU - Lim, Hong Chul

AU - Ahn, Jin Hwan

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N2 - Purpose: To investigate which technique would reduce bending stress at the femoral tunnel aperture and make short tunnel length after ACL reconstruction by comparing the femoral graft bending angle and tunnel length between the single-bundle (SB) transtibial (TT) and double-bundle (DB) transportal (TP) technique using three-dimensional-computed tomography using OsiriX® imaging software. Methods: Forty-nine patients underwent an ACL reconstruction using a SB TT (Group I, 20 patients) and DB TP (Group II, 29 patients) technique. Femoral graft bending angle and femoral tunnel length were measured by CT image using OsiriX® imaging software. Groups I and II were compared, and statistical analysis was performed using SPSS software. Results: The mean anteromedial (AM) and posterolateral (PL) femoral graft bending angle of group II (111. 5 ± 8. 8° and 118. 9 ± 9. 8°, respectively) was significantly more acute than that of group I (125. 3 ± 11. 1°) (P < 0. 001, P = 0. 04). The mean femoral tunnel length of group I was significantly longer than that of group II (P = 0. 001). Conclusions: The femoral graft bending angle and the femoral tunnel length of the TP technique performed in the maximally flexed knee position was more acute and shorter than those of the TT technique after ACL reconstruction. This might increase the bending stress at the femoral tunnel aperture and shorter graft length in the tunnel after an ACL reconstruction using TP technique compared to the TT technique. Level of evidence: III.

AB - Purpose: To investigate which technique would reduce bending stress at the femoral tunnel aperture and make short tunnel length after ACL reconstruction by comparing the femoral graft bending angle and tunnel length between the single-bundle (SB) transtibial (TT) and double-bundle (DB) transportal (TP) technique using three-dimensional-computed tomography using OsiriX® imaging software. Methods: Forty-nine patients underwent an ACL reconstruction using a SB TT (Group I, 20 patients) and DB TP (Group II, 29 patients) technique. Femoral graft bending angle and femoral tunnel length were measured by CT image using OsiriX® imaging software. Groups I and II were compared, and statistical analysis was performed using SPSS software. Results: The mean anteromedial (AM) and posterolateral (PL) femoral graft bending angle of group II (111. 5 ± 8. 8° and 118. 9 ± 9. 8°, respectively) was significantly more acute than that of group I (125. 3 ± 11. 1°) (P < 0. 001, P = 0. 04). The mean femoral tunnel length of group I was significantly longer than that of group II (P = 0. 001). Conclusions: The femoral graft bending angle and the femoral tunnel length of the TP technique performed in the maximally flexed knee position was more acute and shorter than those of the TT technique after ACL reconstruction. This might increase the bending stress at the femoral tunnel aperture and shorter graft length in the tunnel after an ACL reconstruction using TP technique compared to the TT technique. Level of evidence: III.

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KW - Anterior cruciate ligament

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