Jae Chul Yoo

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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(More)
The conflict between tenotomy versus tenodesis for biceps lesions of the shoulder has not been resolved. We, however, believe that tenodesis is the treatment of choice until proven otherwise. Hence our department has been performing arthroscopic tenodesis for biceps subluxation or partial tears that involved over 50% of its diameters. We introduce our(More)
The arthroscopic removal of loose bodies in the knee joints is a relatively common procedure. Quite often intra-articular loose bodies tend to localize at the posterior compartment due to gravity effect. However, it is often technically demanding to find and remove loose bodies located at the posterior compartment of the knee joint arthroscopically. We(More)
OBJECTIVE To determine characteristics and their prognostic value in idiopathic sudden sensorineural hearing loss (ISSNHL) with comorbid ipsilateral benign paroxysmal positional vertigo (BPPV). STUDY DESIGN Retrospective chart review. SETTING Tertiary referral center. PATIENTS Of the 374 patients with a diagnosis of ISSNHL at Seoul National University(More)
Transection injury (complete radial tear, root tear) in the posterior horn of medial meniscus will lead to loss of hoop strain, extrusion of the meniscus and early degenerative changes. The posterior horn of medial meniscus is amenable to repair due to its good blood supply and repair is the procedure of choice for these injuries. In cases of transection of(More)
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(More)
Hamstring tendon using quadrupled semitendinosus and gracilis autografts is a well-established technique for ACL reconstruction. However, several methods have been used for tibial fixation of the tendon graft. The purpose of this study was to compare the biomechanical characteristics of quadrupled hamstring graft tibial fixation using three different(More)
This study was designed to evaluate the dimensions of the bony cochlear nerve canal (BCNC) in congenital unilateral sensorineural hearing loss (USNHL) patients with normal inner ears, and to analyze the correlation between BCNC and hearing status. Medical records and temporal bone computed tomography (TBCT) findings of 380 patients who visited Seoul(More)
OBJECTIVE To compare the accuracy between a three-dimensional (3D) indirect isotropic T1-weighted fast spin-echo (FSE) magnetic resonance (MR) arthrography and a conventional two-dimensional (2D) T1-weighted sequences of indirect MR arthrography for diagnosing rotator cuff tears. MATERIALS AND METHODS The study was approved by our Institutional Review(More)
BACKGROUND The prevalence of os acromiale has been documented to be between 1% and 15% and is known to be clinically associated with subacromial impingement or rotator cuff tear. However, the prevalence of os acromiale in Korea has not yet been determined. The purpose of this study is to evaluate the prevalence of os acromiale in Korean patients who visited(More)