• 제목/요약/키워드: Supraspinatus

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Biomechanical investigation of arm position on deforming muscular forces in proximal humerus fractures

  • Christen E. Chalmers;David J. Wright;Nilay A. Patel;Hunter Hitchens;Michelle McGarry;Thay Q. Lee;John A. Scolaro
    • Clinics in Shoulder and Elbow
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    • 제25권4호
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    • pp.282-287
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    • 2022
  • Background: Muscular forces drive proximal humeral fracture deformity, yet it is unknown if arm position can help mitigate such forces. Our hypothesis was that glenohumeral abduction and humeral internal rotation decrease the pull of the supraspinatus and subscapularis muscles, minimizing varus fracture deformity. Methods: A medial wedge osteotomy was performed in eight cadaveric shoulders to simulate a two-part fracture. The specimens were tested on a custom shoulder testing system. Humeral head varus was measured following physiologic muscle loading at neutral and 20° humeral internal rotation at both 0° and 20° glenohumeral abduction. Results: There was a significant decrease in varus deformity caused by the subscapularis (p<0.05) at 20° abduction. Significantly increasing humeral internal rotation decreased varus deformity caused by the subscapularis (p<0.05) at both abduction angles and that caused by the supraspinatus (p<0.05) and infraspinatus (p<0.05) at 0° abduction only. Conclusions: Postoperative shoulder abduction and internal rotation can be protective against varus failure following proximal humeral fracture fixation as these positions decrease tension on the supraspinatus and subscapularis muscles. Use of a resting sling that places the shoulder in this position should be considered.

한우고기 극상근(supraspinatus m.)의 냉장 저장 중 포장방법에 따른 품질 및 저장성에 관한 연구

  • 이현정;우지선;정구용;김현수
    • 한국축산식품학회:학술대회논문집
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    • 한국축산식품학회 2005년도 제36차 추계 학술발표대회
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    • pp.221-224
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    • 2005
  • 본 연구는 한우 앞다리살 부위육인 극상근(supraspinatus m.)의 포장방법(일반포장, 진공포장, 가스포장)에 따른 냉장 저장 중 품질변화를 살펴보았다. 포장방법에 따른 pH 변화는 차이가 없었으며, TBA는 대조구의 경우 저장 15일에 가식권을 넘었으나 진공포장과 가스포장구는 저장 25일째에도 산패도에 대한 큰 영향은 미치지 않았다. 포장감량은 진공포장, 대조구, 가스포장의 순으로 높았으며, 경도는 처리구 중 가스포장구가 가장 낮았다. 따라서 극상근의 연도와 저장성을 고려 할 때 가스포장이 적합한 것으로 사료되었다.

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극상건과 극하건 부분 파열의 재고찰: MR 소견을 바탕으로 (Partial-Thickness Tear of Supraspinatus and Infraspinatus Tendon Revisited: Based on MR Findings)

  • 송신혜;이슬기;김지영
    • 대한영상의학회지
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    • 제82권6호
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    • pp.1366-1387
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    • 2021
  • 회전근개 부분 파열의 자기공명영상 해석은 종종 애매한 경우가 있다. 이 종설에서는 회전근개 중 극상건과 극하건에 초점을 맞춰, 회전근개 부분 파열의 진단을 위한 해부학적 고려 사항을 설명하고, 회전근개 부분 파열의 분류를 요약하며, 박리(delamination)가 포함된 회전근개 부분 파열의 최신 개념을 개략적으로 설명하였다.

Minimal Medial-row Tie with Suture-bridge Technique for Medium to Large Rotator Cuff Tears

  • Lee, Hyun Il;Ryu, Ho Young;Shim, Sang-Jun;Yoo, Jae Chul
    • Clinics in Shoulder and Elbow
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    • 제18권4호
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    • pp.197-205
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    • 2015
  • Background: The purpose of this study was to evaluate the postoperative magnetic resonance imaging (MRI) results of minimal-tying (one medial-row tie among 4 medial-row sutures) on the medial-row in double-row suture-bridge configuration ($2{\times}2$ anchor with $4{\times}4$ suture stands). Methods: From 2011 March to 2012 July, 79 patients underwent arthroscopic rotator cuff repair using $2{\times}2$ anchor double-row configuration. The mean age was 61.3 years (range, 31-81 years). Two double-loaded suture anchors were used for medial-row. Four medial-row stitches were made with only one medial-row knot-tying (the most anterior suture). Lateral-row was secured using the conventional suture-bridge anchor technique; all 4 strands were used for each anchor. Repair integrity was evaluated with MRI at mean 6.2 months postoperatively. Retear and the pattern of retear, change of fatty infiltration, and muscle atrophy of supraspinatus were evaluated using pre- and postoperative MRI. Results: Repaired tendon integrity was 38 for type I, 30 for type II, 6 for type III, 4 for type IV, and 1 for type V, according to Sugaya classification. Considering type IV/V as retear, the rate was 6.3% (5 out of 79 patients). Medial cuff failure was observed in 4 patients. Fatty atrophy of supraspinatus was significantly improved postoperatively according to Goutallier grading (p=0.01). The level of muscle atrophy of supraspinatus was not changed significantly after surgery. Conclusions: Minimal tying technique with suture configuration of four-by-four strand double-row suture-bridge yielded a lower retear rate (6.3%) in medium to large rotator cuff tears.

운동프로그램 중재가 돌림근띠 복원술 환자의 근 활성도에 미치는 영향 (Effects of Exercise Program Intervention on Muscle Activity in Rotator Cuff Repair Patient)

  • 강정일;문영준;박승규;이준희;양대중;최현;정대근;김용남;권혜민
    • The Journal of Korean Physical Therapy
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    • 제25권2호
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    • pp.56-63
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    • 2013
  • Purpose: This study was conducted in order to examine how an effective rehabilitation exercise program influences the activity of shoulder muscles, and to help the clinical application of a rehabilitation program, for prevention and relief of pain, adhesion, and joint stiffness of patients who undergo rotator cuff repair. Methods: Nine test subjects were placed randomly into each group for a total of 27 subjects and exercise program interventions according to the group were conducted for six weeks, after which maximum voluntary isometric contraction (%MVIC) value was re-measured for supraspinatus muscle, infraspinatus muscle, serratus anterior muscle, and middle deltoid muscle in all groups in order to compare changes in muscle activity before and after the experiment in order to perform comparative analysis of changes in muscle activity between groups, based on which four experimental hypotheses were confirmed. Results: Changes in muscle activity according to %MVIC showed a statistically significant difference (p<0.01) (p<0.001) in all muscles, except the middle deltoid muscle, and post-verification results showed that changes in muscle activity according to %MVIC were greater in test groups I and II, compared with the control group, for the supraspinatus muscle, infraspinatus muscle, and serratus anterior muscle. Conclusion: Therefore, rehabilitation through use of the methods described above should be applied efficiently in clinical settings and more research in development of much more efficient rehabilitation program interventions must be conducted.

신바로3 약침시술을 병행한 한방치료로 호전된 극상근건염 및 삼각근하 점액낭염 환자 치험 1례 (A Case Report of Supraspinatus Tendinitis and Subdeltoid Bursitis Patient Improved by Korean Medicine Treatment with Shinbaro3 Pharmacopuncture)

  • 윤영웅;정재현;정승현;문병헌;최영준;유수빈;이정훈;신동재
    • 한방재활의학과학회지
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    • 제25권4호
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    • pp.161-167
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    • 2015
  • Objectives The objective of this study is to report the improved case of Korean medicine treatment with Shinbaro3 pharmacopuncture for supraspinatus tendinitis and subdeltoid bursitis. Methods We used Shinbaro3 pharmacopuncture with other Korean medicine treatment (acupuncture, herbal medicine, cupping and chuna) for this patient. This case is measured and assessed by Numerical Rating Scale (NRS), shoulder range of motion (ROM) and shoulder physical examination. Results The NRS decreased from 10 to 2 and the patient showed nearly full shoulder range of motion. Also physical examination of shoulder was improved. Conclusions Korean medicine treatment with Shinbaro3 pharmacopuncture is proved to be helpful to relieve pain and recover function on shoulder joint.

The Effect of Exercise Using Grasping on Shoulder Muscle Activity and Muscle Thickness of Patients with Rotator Cuff Repair

  • Choi, Eun-Young;Choi, Hyun
    • The Journal of Korean Physical Therapy
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    • 제28권1호
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    • pp.52-58
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    • 2016
  • Purpose: This study intended to mediate shoulder exercise using grasping and investigate examine how its effects on affects activities of the shoulder surrounding muscles of the shoulder and thickness of shoulder muscle to suggest effective exercise for patients with rotator cuff repair to return to daily life. Methods: This study has been done targeteding male patients more than 6 weeks after having En-masse Suture Bridge Technique as rotator cuff repair of the right shoulder, aged 40 to 55 in a medical institution located in Jeollanam-do. Experimental group I (n=15) was selected for a conducting common exercise therapy program and Experimental group II (n=15) was selected for an conducting exercise therapy program using grasping. %RVC was measured by surface electromyography and muscle thickness was measured by ultrasound before mediation to for analysisze of before and after results within group and between groups. Results: In comparison of change of %RVC, Tthere were meaningful differences in only posterior deltoid and infraspinatus in comparing a change of %RVC within experimental group I (p<0.001),. and Tthere were meaningful differences in both supraspinatus and infraspinatus in muscle thickness within experimental group I (p<0.001). In comparison of change of %RVC, Tthere were meaningful differences in anterior deltoid, posterior deltoid and infraspinatus in comparing a change of %RVC within experimental group II (p<0.05)(p<0.01) (p<0.001), and there were meaningful differences in both supraspinatus and infraspinatus in muscle thickness within experimental group II (p<0.001). In comparison of change of %RVC between groups, Tthere was a meaningful difference in only posterior deltoid in comparing a change of %RVC between groups (p<0.001). Conclusion: We found that exercise therapy using grasping has a positive effect on shoulder stability muscles such as supraspinatus muscle and infraspinatus muscle and activity of deltoid muscle.