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Purpose The purpose of this study was to analyze the relationship between the occupation ratio and partial-thickness rotator cuf tears. Methods The study included and retrospectively investigated 683 patients with partial-thickness rotator cuf tears between 2013 and 2017. Fifty patients with impingement syndrome were also enrolled as the control group for normal-population comparison. The participants were divided into ive groups: Group A, control group; Group B, < 50% articular-side tears; Group C, ≥ 50% articular-side tears; Group D, < 50% bursal-side tears; and Group E, ≥ 50% bursal-side tears. Muscle volume was evaluated by measurement of each occupation ratio of the supraspinatus and infraspinatus tendons on the most lateral view of the T1-weighted oblique-sagittal images in which the scapular spine remained in contact with the scapular body. Results Fifty patients were enrolled in Group A. A total of 683 patients with Partial thickness rotator cuf tear were divided and classiied into the following groups: 272 into Group B, 153 into Group C, 161 into Group D, and 97 into Group E. The supraspinatus occupation ratios of all partial-thickness rotator cuf tear groups were signiicantly lower than those of the control group. Furthermore, the supraspinatus occupation ratios of Groups C and E (≥ 50% partial-thickness rotator cuf tears) were signiicantly lower than those of Groups B and D (< 50% partial-thickness rotator cuf tears). However, the infraspinatus occupation ratio of only Group E was signiicantly lower than that of the other groups. ConclusionThe supraspinatus occupation ratios of both the ≥ 50% articular-and bursal-side partial-thickness rotator cuf tears were lower than those of the other partial-thickness rotator cuf tears. Conversely, the infraspinatus occupation ratio of only the ≥ 50% bursal-side partial-thickness rotator cuf tears was low. Level of evidence IV.

Category: Bunion Introduction/Purpose: The most frequent complication after hallux valgus corrective surgery is recurrence of deformity. Many factors have been identified previously as risk factors for recurrence. Especially, inadequate correction of the distal metatarsal articular angle (DMAA) has been reported one of the surgical risk factors for recurrence. This study aimed to investigate the recurrence rate after hallux valgus correction using Scarf and Akin osteotomy and to identify the significance of postoperative DMAA as a risk factor of recurrence. Methods: We reviewed 87 hallux valgus patients (122 feet) who received Scarf and Akin osteotomy from January 2007 to August 2015. Clinical outcomes were evaluated using VAS and the AOFAS score. Radiological outcome measures included hallux valgus angle (HVA), intermetatarsal angle (IMA) and distal metatarsal articular angle (DMAA) in serial weight bearing radiograph. Recurrence was defined as more than 20 degrees of HVA in final follow-up radiograph. Radiological factors associated with recurrence including high DMAA were evaluated and analyzed. Results: Mean follow-up duration was 20.6 months (range, 12.0-46.5 months) and mean age was 44 years (13-80 years). The VAS and AOFAS scores were significantly improved at the final follow-up (7.0 to 2.0, p<0.001, 78.0 to 92.0, p<0.001). Significant corrections in the HVA, IMA and DMAA were obtained(p<0.001). Eleven (9.0%, 11/122) cases recurred hallux valgus deformity. Postoperative IMA, DMAA and HVA showed significant moderate to strong correlation with HVA at final follow-up (rho: Spearman correlation coefficient, 0.42, 0.71, 0.87, p<0.001). There was no recurrence in cases of postoperative DMAA less than 11.3 degree (fisher exact test, p<0.001). Conclusion: High DMAA is one of numerous risk factor for hallux valgus recurrence after scarf and akin osteotomy. To avoid recurrence, we suggest that surgical correctional goal of DMAA should be considered less than 11.3 degrees.

Shoulder joint dislocation has the most common incidence rate compare compared to other joints. It is reported that shoulder Shoulder dislocation couldmay be associated with glenoid rim, greater tuberosity of humerus and coracoid process fracture. There were have only been 2 cases of anterior shoulder dislocation simultaneously combined with simultaneous glenoid rim, coracoid process, and humerus greater tuberosity fracture worldwide and no report reports in Korea. We present a case of quadruple fracture (glenoid rim, coracoid process, greater tuberosity, surgical neck of humerus) associated with anterior shoulder dislocation and treated successfully by open reduction. In addition, with we provide the injury mechanism, diagnosis, treatment procedure and discussion.

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