|
KMID : 1037920170040010013
|
|
Arthroscopy and Orthopedic Sports Medicine
2017 Volume.4 No. 1 p.13 ~ p.20
|
|
|
Magnetic resonance imaging and clinical outcomes of anterior cruciate ligament reconstruction using bioabsorbable cross-pins for femoral fixation via the anteromedial portal
|
|
Jung Young-Bok
Kim Kang-Il
Yang Jae-Woo
Lee Sang-Hak
|
|
|
Abstract
|
|
|
Background: The goal of this retrospective study was to investigate the clinical results and the graft status according to Rigidfix pin-associated complications after anterior cruciate ligament (ACL) reconstruction using the anteromedial (AM) portal technique.
Methods: We enrolled 27 patients who underwent ACL reconstruction using the AM portal technique and a quadruple hamstring tendon autograft. Radiological parameters were measured by magnetic resonance imaging (MRI) at a mean of 6.4 ± 0.8 months after surgery, and clinical outcome and anterior stability were evaluated at a mean of 29.3 ± 9.7 months postoperatively. Our parameters of clinical outcome were the Orthopadische Arbeitsgruppe Knie (OAK) score and the International Knee Documentation Committee (IKDC) score.
Results: Radiologically, we observed protrusion, breakage, and migration of Rigidfix cross-pins in 23 patients (85.2%), 15 patients (55.6%), and 11 patients (40.7%), respectively. Amongst them, we found that the cross-pins had migrated near the popliteal space in 6 patients. When we performed a comparative analysis according to the status of the cross-pins (the breakage group vs. the intact group), there were significant differences between the two groups in terms of anterior stability measured using the Telos stress device and the KT-1000 arthrometer (P = 0.032 and P = 0.025, respectively). However, the clinical scores, age, range of motion, results of the Lachman test and the pivot shift test, and the ACL graft signals did not significantly differ between the two groups (P > 0.05).
Conclusion: The present study demonstrates that the use of the AM portal technique for femoral tunnel positioning can cause a high prevalence of Rigidfix pin-associated problems, such as protrusion, breakage, and migration. Thus, we propose that compromised Rigidfix pins are risk factors of anterior instability after ACL reconstruction using hamstring tendons.
|
|
|
KEYWORD
|
|
|
Anterior cruciate ligament reconstruction, Anteromedial portal, Cross pin fixation, Magnetic resonance imaging
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|
|