• Journal of Oral Medicine and Pain
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• v.23 no.1
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• pp.37-44
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• 1998

본연구는 서울대학교 치과병원 구강진단과 악안면 동통진료실에 내원한 환자 중 임상적 검사에 의해 악관절 내장증으로 진단된 총 32명 53개의 측두하악 관절을 대상으로 악관절 조영술이나 자기공명영상을 실시하여 임상적 진단의 정확도를 알아보고 향후 이 결과를 적절히 활용하여 정확한 적응증의 설정에 도움을 주고자 시행되었다. 각 악관절을 임상적 검사, 조영술 및 자기공명영상 검사를 기준으로 정상, 정복성 관절원판 변위, 비정복성 관절원판 변위, 퇴행성 관절 질환을 동반한 정복성 관절원판 변위, 퇴행성 관절 질환을 동반한 비정복성 관절원판 변위로 구분하였다. 이상의 연구를 통하여 다음과 같은 결론을 얻었다. 1. 악관절 내장증으로 내원한 환자 32명, 총 53개 관절중, 정상인 경우가 5예, 정복성 관절원판 변위인 경우가 33예, 비정복성 관절원판 변위인 경우가 14예, 퇴행성 관절 질환을 동반한 정복성 관절원판변위인 경우가 1예이었고, 퇴행성 관절 질환을 동반한 비정복성 관절원판 변위인 경우는 없었다. 2. 악관절 조영술 검사를 시행한 35개의 관절중 임상적 검사와 일치하는 경우는 32개로 그 일치율은 91.1%이었으며, 자기공명영상 검사를 시행한 28개의 관절중 임상적 검사와 일치하는 경우는 20개로 그 일치율은 71.4%이었다. 3. 악관절 조영술 및 자기공명영상 검사를 동시에 시행한 10개 관절중 악관절 조영술 및 자기공명영상검사가 일치하는 경우는 9개이었으며 이중 8개 결과는 임상적 진단과 일치되는 소견을 보였다. 임상적 검사는 악관절 내장증의 진단에 유용한 방법임이 확인되었다. 그러나 임상적으로는 정상으로 진단되었지만 주관적인 증상을 가진 환자에게는 자기공명영상 검사와 악관절조영술 검사 등의 영상진단술식이 필요할 것으로 사료된다.

• Journal of the Korean Society of Radiology
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• v.82 no.5
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• pp.1140-1162
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• 2021

Tearing of the acetabular labrum is a common cause of chronic hip pain. MR arthrography (MRA) of the hip is the imaging procedure of choice for the evaluation of acetabular labrum. Familiarity with the various imaging findings of MRA of the hip allows recognition of normal variants and differentiation from true pathologic conditions. This article comprehensively reviews the technical aspects and interpretation of MRA of the hip. The appearances of normal and abnormal labra in MRA are discussed. Potential pitfalls in labral tear interpretation, such as sulci around the hip, normal variants of the labrum and plicae, and osseocartilaginous and soft tissue lesions identified on MRA of the hip are also described.

• Investigative Magnetic Resonance Imaging
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• v.7 no.1
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• pp.1-11
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• 2003

• Journal of the Korean Society of Radiology
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• v.6 no.4
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• pp.299-303
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• 2012

Shoulder MRArthrography was performed to get an accurate diagnosis about complex anatomical structure in shoulder joint. We carried out how the changes of anatomical rotations in shoulder joint could bring certain diagnosis effects on MRI images for various shoulder humerus positions; Neutral position, Internal rotation position and External rotation position. In addition, we prepared an aid tool in oder to maintain the right posture of a patient. This aid tool was made by adapting Modeling Design Program. By virtue of this aid, we obtained the following result. Shoulder MR Arthrography by the External rotation position for anatomical structure diagnosis was the most suitable in diagnostic evaluations of important anatomical structures in shoulder joint such as Biceps tendon, Supera-spiatus tendon, Sub-scapularis tendon, Labrum and Sub-acromial space.

• The Academic Congress of Korean Shoulder and Elbow Society
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• 2005.03a
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• pp.14-15
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• 2005

• The Journal of Korean Orthopaedic Ultrasound Society
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• v.1 no.1
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• pp.23-26
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• 2008

Ultrasonography (USG) is widely accepted diagnostic method for the rotator cuff tear. The availability, low cost, easy to access is main factors that favor USG as a primary diagnostic modality for various cuff disorders. We experienced a case of discrepancy between USG, MR arthrography (MRA) and arthroscopic examination. Seventy four year old female patient complained of right shoulder pain. USG depicted rotator cuff tear with the size of 1cm, and MRA demonstrated about 3cm sized tear. Complex massive tear with delamination of degenerated rotator cuff was identified in the arthroscopic examination. When we encounter a patient who has loss of rotator cuff power or severe symptom than findings of USG, MRA or repeat USG is warranted. We report a case of discrepancy between examination modalities with brief review of the literature.

• Investigative Magnetic Resonance Imaging
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• v.18 no.3
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• pp.193-199
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• 2014

Purpose : To evaluate the relationship between superior labral dimension of the glenohumeral joint on direct MRA and presence of SLAP lesion. Materials and Methods: IRB approval was obtained and informed consent was waived for this retrospective study. Direct MRA studies of the shoulder in 296 patients (300 shoulders) with arthroscopic surgery were analyzed by two radiologists blinded to the arthroscopic results, which were used as gold standard. One of the radiologists reviewed the images twice (session 1 and 2) for the evaluation of intra-observer variability. Transverse and longitudinal dimensions of superior labrum on coronal T1-weighted images were measured as base and height of the inverted triangular-shaped superior labrum and compared between patients with SLAP lesions vs. non-SLAP patients. Presence of meniscoid labrum was noted. Statistical analysis was done using unpaired t-test. Results: Among 279 patients (283 shoulders), 122 patients (43.1%) had SLAP lesions. The mean base/height of superior labrum in SLAP and non-SLAP patients measured on T1-weighted MR image were 8.8 mm / 5.2 mm, 8.5 mm / 4.9 mm for reader 1; 8.2 mm / 4.9 mm, 8.1 mm / 4.5 mm for session 1 of reader 2; 8.0 mm / 4.8 mm, 7.6 mm / 4.3 mm for session 2 of reader 2. In SLAP group, the mean labral height was larger than non-SLAP group with statistically significant difference (p<0.05). Fifteen patients (5.3%) had meniscoid labrum according to operation records. Conclusion: In patients with SLAP lesion, the height of the superior glenoid labrum on oblique coronal image of MRA was slightly larger than non-SLAP patients. A larger height of superior glenoid labrum may be associated with SLAP lesions.

• Journal of the Korean Arthroscopy Society
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• v.11 no.1
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• pp.50-53
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• 2007

Although the lateral discoid meniscus of the knee has been observed frequently, the medial discoid meniscus has very rarely been reported in the literature. A 22-year-old female patient was diagnosed as having a medial discoid meniscus with horizontal tear by means of magnetic resonance image and arthroscopy. The patient was treated by arthroscopic partial meniscectomy.

• Journal of the Korean Arthroscopy Society
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• v.10 no.1
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• pp.95-98
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• 2006

Most of discoid menisci are lateral and medial discoid meniscus is very rare. There is no report about simultaneous medial and lateral discoid meniscus in one knee joint. A 15-year-old male patient was diagnosed as having a complete medial discoid meniscus with horizontal tear and intact incomplete lateral discoid meniscus by means of magnetic resonance image and arthroscopy. The patient was treated by arthroscopic partial meniscectomy for both discoid menisci.

• Investigative Magnetic Resonance Imaging
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• v.17 no.1
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• pp.26-32
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• 2013

Purpose : This study was performed to evaluate the presence and severity of Hill-Sachs (HS) lesions on MR arthrography (MRA) of shoulder in patients with Bankart lesions following anterior dislocation and to investigate their relationship with Bankart lesions and frequency of dislocations. Materials and Methods: 86 MRA of shoulder were evaluated in patients with arthroscopic Bankart repairs following anterior dislocations. The largest surface length of HS lesion on MRA and extent of Bankart lesions on arthroscopy were measured. Relationships between length of HS lesions and extent of Bankart lesions and frequency of dislocations were assessed. Results: HS lesions were identified on MRA in 78 patients. The largest surface length of HS lesion ranged from 9.3 mm to 29.6 mm (mean, 18.8 mm). The extent of Bankart lesion ranged from one to six o'clock extent (mean, 4.25 o'clock extent). Three patients had single dislocation and the other 75 patients had recurrent dislocations (mean 24.5 times). The largest surface length of HS lesions was positively correlated with extent of Bankart lesions (p = 0.001, r = 0.37), but not with frequency of dislocation. Conclusion: HS lesion was very common in patients with Bankart lesion. The severity of HS lesions was correlated with extent of Bankart lesions.