TY - JOUR
T1 - The accuracy of a newly developed guide system in medial meniscus posterior root repair
T2 - a comparison between two aiming guides
AU - Furumatsu, Takayuki
AU - Okazaki, Yuki
AU - Kodama, Yuya
AU - Okazaki, Yoshiki
AU - Kamatsuki, Yusuke
AU - Masuda, Shin
AU - Hiranaka, Takaaki
AU - Ozaki, Toshifumi
N1 - Funding Information:
We thank Drs. Shinichi Miyazawa, Takaaki Tanaka, Masataka Fujii, and Tomohito Hino for their clinical support. We also appreciate Drs. Ken Nakata, Nobuo Adachi, and Hideyuki Koga for their great contribution to developing the UMR guide system. Informed consent was obtained from all patients being included in this study.
Publisher Copyright:
© 2019, The Author(s).
PY - 2019/12
Y1 - 2019/12
N2 - Purpose: Posterior root repair of the medial meniscus (MM) can prevent rapid progression of knee osteoarthritis in patients with a MM posterior root tear (MMPRT). The anatomic reattachment of the MM posterior root is considered to be critical in a transtibial pullout repair. However, tibial tunnel creation at the anatomic attachment is technically difficult. We hypothesized that a newly developed point-contact aiming guide [Unicorn Meniscal Root (UMR) guide] can create the tibial tunnel at a better position rather than a previously designed MMPRT guide. The aim of this study was to compare the position of the created tibial tunnel between the two meniscal root repair guides. Materials and methods: Thirty-eight patients underwent transtibial pullout repairs. Tibial tunnel creation was performed using the UMR guide (19 cases) or MMPRT guide (19 cases). Three-dimensional computed tomography images of the tibial surface were evaluated using the Tsukada’s measurement method postoperatively. The expected anatomic center of the MM posterior root attachment was defined as the center of three tangential lines referring to three anatomic bony landmarks (anterior border of the posterior cruciate ligament, lateral margin of the medial tibial plateau, and retro-eminence ridge). The expected anatomic center and tibial tunnel center were evaluated using the percentage-based posterolateral location on the tibial surface. The distance between the anatomic center and tunnel center was calculated. Results: The anatomic center of the MM posterior root footprint was located at a position of 79.2% posterior and 39.5% lateral. The mean of the tunnel center in the UMR guide was similar to that in the MMPRT guide (posterior direction, P = 0.096; lateral direction, P = 0.280). The mean distances between the tunnel center and the anatomic center were 4.06 and 3.99 mm in the UMR and MMPRT guide group, respectively (P = 0.455). Conclusions: The UMR guide, as well as the MMPRT guide, is a useful device to create favorable tibial tunnels at the MM posterior root attachment for pullout repairs in patients with MMPRTs. Level of evidence: IV
AB - Purpose: Posterior root repair of the medial meniscus (MM) can prevent rapid progression of knee osteoarthritis in patients with a MM posterior root tear (MMPRT). The anatomic reattachment of the MM posterior root is considered to be critical in a transtibial pullout repair. However, tibial tunnel creation at the anatomic attachment is technically difficult. We hypothesized that a newly developed point-contact aiming guide [Unicorn Meniscal Root (UMR) guide] can create the tibial tunnel at a better position rather than a previously designed MMPRT guide. The aim of this study was to compare the position of the created tibial tunnel between the two meniscal root repair guides. Materials and methods: Thirty-eight patients underwent transtibial pullout repairs. Tibial tunnel creation was performed using the UMR guide (19 cases) or MMPRT guide (19 cases). Three-dimensional computed tomography images of the tibial surface were evaluated using the Tsukada’s measurement method postoperatively. The expected anatomic center of the MM posterior root attachment was defined as the center of three tangential lines referring to three anatomic bony landmarks (anterior border of the posterior cruciate ligament, lateral margin of the medial tibial plateau, and retro-eminence ridge). The expected anatomic center and tibial tunnel center were evaluated using the percentage-based posterolateral location on the tibial surface. The distance between the anatomic center and tunnel center was calculated. Results: The anatomic center of the MM posterior root footprint was located at a position of 79.2% posterior and 39.5% lateral. The mean of the tunnel center in the UMR guide was similar to that in the MMPRT guide (posterior direction, P = 0.096; lateral direction, P = 0.280). The mean distances between the tunnel center and the anatomic center were 4.06 and 3.99 mm in the UMR and MMPRT guide group, respectively (P = 0.455). Conclusions: The UMR guide, as well as the MMPRT guide, is a useful device to create favorable tibial tunnels at the MM posterior root attachment for pullout repairs in patients with MMPRTs. Level of evidence: IV
KW - Knee
KW - Medial meniscus
KW - Pullout repair
KW - Root tear
KW - Tibial guide
UR - http://www.scopus.com/inward/record.url?scp=85082803523&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85082803523&partnerID=8YFLogxK
U2 - 10.1186/s43019-019-0007-1
DO - 10.1186/s43019-019-0007-1
M3 - Article
AN - SCOPUS:85082803523
SN - 2234-0726
VL - 31
JO - Knee Surgery and Related Research
JF - Knee Surgery and Related Research
IS - 1
M1 - 7
ER -