ABSTRACT
<p><b>OBJECTIVE</b>To discuss the advantages of the arthroscopic treatment for complex tears of the medial meniscus posterior horn by creating a tunnel passageway through the intercondylar fossa.</p><p><b>METHODS</b>All 127 patients including 24 males and 103 females with complex tears at the medial meniscus posterior horn were reviewed. The age of all patients ranged from 45 to 78 years old, with an average of 67 years old. All 127 patients were treated with partial meniscectomy, in which 112 patients were treated with partial meniscectomy smoothly with three incisions (anterior medial incision, anterior lateral incision, high anterior lateral incision), and 15 patients were treated with four incisions (anterior medial incision, anterior lateral incision, high anterior lateral incision, posterior medial incision). Four aspects were estimated:whether the meniscus posterior horns could be observed totally and conveniently, whether tools could be pushed to target area conveniently, the damage of adjacent cartilages, operation time(the operation time of partial meniscectomy).</p><p><b>RESULTS</b>Posterior horns of all patients were totally and conveniently observed, tools were conveniently pushed to the target area in all cases, and all the cases had no iatrogenic injuries at adjacent cartilages. The operation time of partial meniscectomy at posterior horns with three incisions ranged from 5 to 10 minutes, and it ranged from 10 to 30 minutes with four incisions.</p><p><b>CONCLUSIONS</b>It is very convenient and fast of the arthroscopy to treat complex tears of the medial meniscus posterior horn by creating a tunnel through the intercondylor fossa. Iatrogenic injuries of the adjacent cartilages were prevented to the greatest extent.</p>
ABSTRACT
<p><b>OBJECTIVE</b>To observe the effect of the meniscus shaping on the knee function and stability after anterior cruciate ligament reconstruction(ACLR).</p><p><b>METHODS</b>A total of 64 ACLR patients were included from January 2013 to January 2015. The control group was the ACLR patients with intact meniscus, in which 24 males and 6 females. The mean age was(32.8±5.5) years old(ranged, 22 to 43 years old). The injury side was left on 17 cases and right on 13 cases. The mean follow-up time was(15.2±2.8) months(ranged, 12 to 19 months). The shaping group was the ACLR patients with meniscus shaping, in which 27 males and 7 females. The mean age was (33.1±4.2) years old (ranged, 23 to 42 years old). The injury side was on the left in 22 case and right in 12 cases. The mean follow-up time was (16.0±3.1) months (ranged, 12 to 20 months). The preoperative anterior tibia shift and knee joint function, as well as anterior tibia shift, knee joint function and active proprioception at last follow-up time were observed. The anterior tibia shift was measured by KT-1000. The knee joint function was assessed by Lysholm score and KOOS score. The errors of active proprioception were measured at 30°, 45° and 60° knee flexion.</p><p><b>RESULTS</b>Postoperative anterior tibia shift of the affected side was (1.4±0.2) mm, which was lower than (2.2±0.4) mm in shaping group(<0.05). The postoperative total Lysholm scores of the control group and the shaping group were 93.7±2.7 and 92.3±3.0 respectively, which were higher than 52.8±3.9 and 51.6±5.1 preoperatively(<0.05), but there were no significant differences between two groups(>0.05). In the KOOS score, the postoperative symptoms, pain, daily life, exercise capacity and life quality in control group were 90.7±5.5, 93.2±4.3, 96.8±2.2, 90.9±5.3, 91.8±4.5 respectively, which were higher than 72.7±6.0, 70.6±7.3, 72.5±7.4, 52.8±5.4, 36.2±6.5 preoperatively(<0.05); the postoperative symptoms, pain, daily life, exercise capacity and life quality in the shaping group were 88.9±5.8, 92.6±3.5, 96.5±2.1, 89.3±7.2, 90.6±4.1 respectively, which were higher than 71.9±5.1, 71.2±7.1, 71.3±6.2, 53.1±6.1, 35.6±4.7 preoperatively(<0.05). No significant differences were observed in each postoperative item of KOOS between the two groups(>0.05). No significant differences were observed in the postoperative active proprioception error of contralateral side between the control group(12.2±3.4)°and shaping group(12.8±3.2)°(>0.05). The error of active proprioception in the affacted side of the control group was(13.5±3.7)°, which was lower than that in the shaping group(17.1±4.2)°(<0.05). In control group, there was no significant difference in the active proprioception error between two sides(>0.05). While in shaping group, the error of active proprioception in the affacted side was significantly greater than that in the contralateral side(<0.05).</p><p><b>CONCLUSIONS</b>In short and medium term, meniscus shaping has no effect on knee joint function in patients with ACLR, but it impairs the knee proprioception and stability.</p>
ABSTRACT
Objective To compared the posterior slop between tibial plateau and meniscus in Chinese population for determining the angle of tibial osteotomy during total knee replacement(TKA).Methods Posterior slop of tibial plateau and meniscus in sixty Chinese volunteers were measured on sagital view of MRI image.Results The values of posterior slop of tibial plateau and meniscus were 9.87??1.56?and 0.96??0.09?,respectively.The two angle revealed remarkable difference (P