Joint Surgery
Anterolateral ligament reconstruction in treating anterior cruciate ligament injury with grade 2 pivot-shift
Wu Guan, Zhang Hui, Li Xu, Song Guanyang, Hong Lei
Published 2022-05-01
Cite as Chin J Orthop, 2022, 42(9): 555-562. DOI: 10.3760/cma.j.cn121113-20220216-00068
Abstract
ObjectiveTo evaluate the clinical outcomes in anterior cruciate ligament (ACL) patients undergoing ACL reconstruction combined with anterolateral ligament (ALL) reconstruction in treating patients with Grade 2 pivot-shift.
MethodsFrom October 2015 to August 2018, a total of 59 patients with Grade 2 pivot shift were allocated into ALL reconstruction group underwent combined ACL and ALL reconstruction (n=29) and control group underwent isolated ACL reconstruction (n=30). Lachman, pivot-shift and KT-1000 side-to-side difference test were used to determine the knee laxity. International Knee Documentation Committee (IKDC) subjective score and Lysholm score were used to assess the knee function. The results of Lachman test and pivot-shift test were classified into -, 1+, 2+, 3+.
ResultsAll patients were followed up for 1 year. The average age was 30.5±8.3 years (range, 15-48 years) in ALL reconstruction group with 5 months duration from injury. The left knee was involved in 11 cases, while 18 cases in right knee in ALL reconstruction group. There were 15 cases with injury in medial meniscus and 8 cases in lateral meniscus. In control group, the average age was 32.2±9.7 years (range 17-51 years) with 14 cases in left knees and 16 in right knees. In these patients, 18 of them had medial meniscus injury, while other 11 patients had lateral meniscus injury. The average duration from injury to surgery was 7 months. The Lachman test (-: 25, 1+: 4 vs. -: 25, 1+: 4, Z=-0.91, P=0.361), KT-1000 arthrometer (1.9±1.3 mm vs. 2.2±1.3 mm, t=0.66, P=0.513), IKDC subjective score (92.4±5.6 vs. 90.2±6.7, t=1.37, P=0.176) and Lysholm score (91.0±6.2 vs. 89.1±5.0, t=1.29, P=0.201) did not show significant difference between the two groups. Pivot-shift test (-:27, 1+: 2 vs. -: 20, 1+: 8, 2+: 2, Z=-0.66, P=0.507). Pivot-shift test was significantly superior in ALL reconstruction group compared with that in control group (6.5% vs.33.3%, χ2=21.70, P<0.001).
ConclusionPatients with preoperative Grade 2 pivot shift had significant improvement in rotatory knee laxity after ACL reconstruction combined with ALL reconstruction compared with isolated ACL reconstruction. However, there was no significant difference in anterior laxity and knee function scores between the two groups.
Key words:
Collateral ligaments; Anterior cruciate ligament reconstruction; Joint instability
Contributor Information
Wu Guan
Department of Sports Medicine, Beijing Jishuitan Hospital, Beijing 100035, China
Zhang Hui
Department of Sports Medicine, Beijing Jishuitan Hospital, Beijing 100035, China
Li Xu
Department of Sports Medicine, Beijing Jishuitan Hospital, Beijing 100035, China
Song Guanyang
Department of Sports Medicine, Beijing Jishuitan Hospital, Beijing 100035, China
Hong Lei
Department of Sports Medicine, Beijing Jishuitan Hospital, Beijing 100035, China