안진환 교수

BACKGROUND: Longitudinal tears of the medial meniscus posterior horn (MMPH) are commonly associated with a chronic anterior cruciate ligament (ACL) deficiency. Many studies have demonstrated the importance of the medial meniscus in terms of limiting the amount of anterior-posterior tibial translation in response to anterior tibial loads in ACL-deficient knees. HYPOTHESIS: An MMPH tear in an ACL-deficient knee increases the anterior-posterior tibial translation and rotatory instability. In additi

The authors introduce a safe arthroscopic technique of making a portal through the posterior septum of the knee joint, posterior to the posterior cruciate ligament (PCL). This posterior trans-septal portal makes it possible for the arthroscope or the working instruments inserted through the posteromedial portal to reach the posterolateral compartment. With this portal, complete arthroscopic visualization of the posterior compartment and easier arthroscopic procedures for the posterior compartmen

PURPOSE: To evaluate the effectiveness of all-inside repair of posterior lateral meniscus root full-thickness tears with preoperative and postoperative magnetic resonance imaging (MRI) and to propose a system of classifying posterior lateral meniscus root tears. METHODS: From June 2003 to March 2007, 27 (6.95%) of a consecutive series of 388 anterior cruciate ligament reconstructions had a concomitant posterior lateral meniscus root tear. Of the patients, 25 (92.6%) were followed up for a more t

PURPOSE: This study was undertaken to document the clinical results and technical aspects of arthroscopic partial meniscectomy in conjunction with peripheral tear repair for the treatment of symptomatic discoid lateral meniscus in children. METHODS: From June 1998 to May 2005, the senior author (J.H.A.) performed arthroscopic surgery on 77 children (89 knees) with symptomatic discoid lateral meniscus. Of these patients, we retrospectively studied 23 patients (28 knees) with a peripheral tear tha

A transection (root tear or complete radial tear) injury of the medial meniscus posterior horn is not rare in the oriental area and needs to be repaired to restore the hoop tension and to reduce the extruded meniscus, which leads to osteoarthritis of the knee. In cases with transection of the medial meniscus posterior horn, the meniscus can be repaired by a pull out suture technique. However, it is difficult to manipulate a suture hook and drill a tibial tunnel in the narrow medial joint space u

PURPOSE: To assess the long-term clinical and radiographic results of arthroscopic reshaping with or without peripheral meniscus repair for the treatment of symptomatic discoid lateral meniscus in children. METHODS: This study included 38 children (48 knees) who underwent arthroscopic surgery for symptomatic discoid lateral meniscus. The mean age at operation was 9.9 years (range, 4 to 15 years), and the mean follow-up period was 10.1 years (range, 8 to 14 years). Arthroscopic partial meniscecto

BACKGROUND: In the symptomatic discoid lateral meniscus, the effectiveness of preoperative magnetic resonance imaging (MRI) is not well documented. HYPOTHESIS: Magnetic resonance imaging classification will provide more information to the surgeon in choosing the appropriate treatment methods with the help of arthroscopic findings. STUDY DESIGN: Cohort study (diagnosis); Level of evidence, 2. METHODS: Sixty-seven patients (82 knees) were reviewed. The preoperative MRI was checked in 76 of 82 knee

PURPOSE: The purpose of this study was to investigate the clinical and magnetic resonance imaging (MRI) results of anterior cruciate ligament (ACL) reconstruction with autogenous hamstring tendon by use of remnant preservation and a femoral tensioning technique. METHODS: A total of 53 patients who had ACL reconstruction by use of remnant ACL stump preservation and a femoral tensioning technique were evaluated. Clinical evaluation at a minimum of 2 years after surgery included range of motion, La

BACKGROUND: Recently, variations of the remnant bundle preservation technique, including selective bundle reconstruction and preservation of the anterior cruciate ligament tibial remnant, have produced good outcomes. The authors chose to investigate whether remnant bundle preservation in anterior cruciate ligament reconstruction would affect the remodeling process without inducing complications. HYPOTHESIS: An anterior cruciate ligament reconstruction graft can be augmented with a tensioned remn

BACKGROUND: Tears of the medial meniscus posterior horn (MMPH) are frequently found in knees with deficient anterior cruciate ligaments (ACLs). There are few studies that have evaluated healing of the menisci and the factors associated with healing. HYPOTHESIS: The repaired menisci would show good healing in the knees with reconstructed ACLs, and the healing capacity of the menisci would differ according to the size, type, and location of the tear as well as the age and gender. STUDY DESIGN: Cas

This paper reports the clinical outcome of the arthroscopic reduction and pull-out suture technique in acute and chronic displaced tibial spine anterior cruciate ligament (ACL) avulsion fractures. Between April 1997 and December 2000, 14 patients received an arthroscopic reduction and pull-out suturing of displaced tibial spine fractures (ACL avulsion fractures of tibia). Of 14 cases, ten were acute fractures and four were chronic nonunion fractures, in which all patients showed extension limita

Up to two thirds of patients with anterior cruciate ligament rupture have a combined medial meniscus posterior horn tear. Researchers have proven the importance of repairing this tear to enhance stability after anterior cruciate ligament reconstruction. However, repairing the meniscal tear can be sometimes cumbersome and difficult or even impossible in certain circumstances, especially in places such as the posterior horn of the medial meniscus. We devised a simple and easy method of all-inside

BACKGROUND: The transtibial technique for posterior cruciate ligament reconstructions can potentially lead to poor clinical outcomes due to the "killer turn" effect. HYPOTHESIS: Preserving the original posterior cruciate ligament fibers in the reconstruction will contribute significantly to the posterior stability of the knee joint, healing of the graft, and prevention of graft failure. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: Sixty-one patients (45 men and 16 women; mean age, 3