유재철 교수

BACKGROUND: During rotator cuff repair, biceps tendon lesions are frequently encountered. However, there is still controversy about optimal treatment for these lesions. PURPOSE: To compare the results of tenotomy and suture anchor tenodesis prospectively. STUDY DESIGN: Cohort study; Level of evidence, 2. METHODS: From January 2006 to June 2007, 90 patients (age, >55 years) with a rotator cuff tear and biceps tendon lesion (tear more than 30%, subluxation or dislocation, or degenerative superior

BACKGROUND: A retear is a significant clinical problem after rotator cuff repair. However, no study has evaluated the retear rate with regard to the extent of footprint coverage. PURPOSE: To evaluate the preoperative and intraoperative factors for a retear after rotator cuff repair, and to confirm the relationship with the extent of footprint coverage. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: Data were retrospectively collected from 693 patients who underwent arthroscopic rotat

PURPOSE: The purpose of this study was to compare the clinical outcomes and the retear rates of arthroscopic single-row (SR) and double-row (DR) suture anchor repair in 2- to 4-cm rotator cuff tears. METHODS: From 2005 to 2007, 71 patients with a 2- to 4-cm rotator cuff tear (proven by arthroscopy) were prospectively randomized to SR and DR repair groups. Of these patients, 62 (31 in each group) were available for evaluation at final follow-up. Demographic data, clinical scores, mean surgical ti

PURPOSE: The purpose of this study was to evaluate the clinical results and healing status of rotator cuff repairs with less than 50% footprint coverage. METHODS: During the 18-month period from October 2005 to March 2007, 89 large to massive rotator cuff tears were arthroscopically repaired. Among them, 23 consecutive large to massive rotator cuff tears were repaired completely but with less than 50% of the original footprint. All tears were arthroscopically repaired with suture anchors. Preope

PURPOSE: The purpose of this study was to define the subscapularis tendon footprint anatomy in 3-dimensional (3D) perspective, report the incidence of tears, and classify the tear patterns prospectively during shoulder arthroscopic surgery. METHODS: The cadaveric study consisted of a pilot study that revealed 4 different bony facets by simple observation at the subscapularis attachment. The 3D footprint anatomy was digitally evaluated in 39 cadavers. The clinical study was conducted from 2011 to

BACKGROUND: Arthroscopic partial repair is a treatment option in irreparable large-to-massive rotator cuff tears without arthritic changes. However, there are indications that arthroscopic partial repair does not yield satisfactory outcomes. PURPOSE: To report the clinical and radiographic results of arthroscopic partial repairs in patients with irreparable large-to-massive cuff tears. In addition, an analysis was performed regarding preoperative factors that may influence patient outcomes and p

PURPOSE: The purpose of this study was to determine whether there are preoperative magnetic resonance imaging (MRI) variables that could predict the repairability of large to massive rotator cuff tears (RCTs), especially in terms of distinguishing between complete repair and incomplete repair. METHODS: Fifty-one consecutive patients who had large to massive RCTs were treated by arthroscopic repair with suture anchors. The primary repair was subclassified into 4 types. Types I and II were complet

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

BACKGROUND: Over 60 repair/reconstruction techniques have been described for the treatment of coracoclavicular (CC) ligament injuries. PURPOSE: To report the functional and radiological outcomes of single-tunnel CC ligament reconstruction using autogenous semitendinosus tendon. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: Between August 2005 and January 2008, a total of 21 patients, 16 patients (14 men, 2 women) with a Rockwood type IV, type V, or a chronic type III acromioclavicula

BACKGROUND: No consensus has been reached with regard to the ideal timing of anterior cruciate ligament reconstruction in terms of reducing secondary meniscal tears in anterior cruciate ligament-deficient knees. HYPOTHESIS: Delay in anterior cruciate ligament reconstruction increases the incidence and severity of medial meniscal tears. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: Thirty-one patients were evaluated with arthroscopic all-inside suturing of medial meniscal tears with c

PURPOSE: To evaluate the optimal number of additional half-hitches needed to achieve optimal knot-holding capacity (KHC) of lockable sliding knots. TYPE OF STUDY: Mechanical testing study. METHODS: Four configurations of arthroscopic knots (Duncan loop, Field knot, Giant knot, and SMC knot) were tested for their knot-holding capacity. For each knot configuration, 6 sequential knots were made including the initial sliding knot and an additional 5 knots by increasing the half-hitches 1 at a time.

Systematic Review and meta-analysis, III.

PURPOSE: The purposes of this study were to examine the morphologic features of the axillary nerve and its relation to the glenoid under an arthroscopic setup, and to determine the changes in nerve position according to different arm positions. METHODS: Twenty-three fresh-frozen fore-quarter cadaveric shoulder specimens were used for evaluations in an arthroscopic setup with the lateral decubitus position. The main trunk of the axillary nerve with or without some of its branches was exposed afte