http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
퇴행성 관절염 환자의 경대퇴관절의 연골 대 연골 접촉에 관한 연구
신충수(Choongsoo Shin),리차드 사우자(Richard Souza),샤밀라 마줌다(Sharmila Majumdar) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.11
Cartilage contact mechanics is essential to understand osteoarthritis, but in vivo cartilage contact mechanics of the knee joint remains unknown. We investigated the influence of loading on in vivo tibiofemoral contact area changes and studied whether in vivo tibiofemoral contact area of subjects with knee osteoarthritis and healthy controls differs. Subjects with radiographic evidence of knee osteoarthritis and control subjects were tested. The coronal 3D-SPGR MR images were acquired under both unloaded and loaded conditions. Tibiofemoral cartilage contact areas were measured using image-based three-dimensional models. Acute loading on the knee joint significantly increased in vivo tibiofemoral contact area in both compartments. The in vivo tibiofemoral contact area in the medial compartment is significantly larger under loaded conditions. Compared with healthy controls, subjects with knee osteoarthritis have significantly larger contact areas under both unloaded and loaded condition.
정지영(Jiyoung Jeong),신충수(Choongsoo S. Shin) 대한기계학회 2017 대한기계학회 춘추학술대회 Vol.2017 No.11
Dynamic balance is an ability to maintain stable position while performing various tasks and it has been reported that dynamic balance associated with athletic performance and injury risks. The purpose of study was to examine the effect of core strength on dynamic balance. Nineteen males completed 10-week core training interventions. To test the core strength, a trunk endurance test was used. During this test, the plank and side-plank positions were maintained for as long as possible. The star excursion balance test (SEBT) were conducted before and after core training to measure the dynamic balance. Plank records and SEBT parameters were compared using a paired Student’s t-tests at a significance level of 0.05. Greater plank and left/right side plank record were found in post-training (p=0.008, p=0.049, and p=0.007 respectively), thus the core muscle strength increased after training. As the SEBT results, greater anterior, anteromedial, medial, posteromedial, posterior, posterolateral reach distances were found between pre- and post-training, but there was no significant differences in lateral and anterolateral distances. These results indicate that strengthening of core muscle increase the dynamic balance, thereby it positively affected in lower extremity injury risk.
상부 파일런 재건술을 통한 광범위 회전근개 파열 환자의 상완골 상부 전이량 감소
박동오(Dong-Oh Park),신충수(Choongsoo S. Shin) 대한기계학회 2022 대한기계학회 춘추학술대회 Vol.2022 No.11
The purpose of this study is to suggest novel surgical technique for irreparable rotator cuff tear patients; superior pylon reconstruction (SPR) by comparing its surgical effect with superior capsular reconstruction (SCR) by a simulation study. We constructed total 4 models; intact, tear, SCR and SPR models based on MRI. Total 10 male subjects (age, 25±4 year old; weight, 66±10 kg; height, 170±5cm) implemented shoulder abduction in scapular plane. Range of motion (ROM), acromio humeral distance (AHD), and superior-inferior (SI) translation of humerus of SPR and SCR models were compared. There’s no significant difference in ROM between two models, however in AHD, SPR model increased by 0.4 mm (p = 0.001) compared with SCR model. SPR models showed decreased maximum superior translation of humerus by 1.0 mm (p = 0.001) compared with SCR model. These results implied that SPR could restore shoulder joint kinematics of massive irreparable rotator cuff tear patients as effectively as SCR.