• Journal of the Korean Orthopaedic Association
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• v.56 no.6
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• pp.498-503
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• 2021

Purpose: The aim of this study were to find ideal entry point of straight antegrade humeral intramedullary nail (SAHN) for the treatment of proximal humerus fracture in Korean and to analyze anatomical conformity using computed tomography. Materials and Methods: From May 2014 to October 2016, the study was conducted retrospectively on 74 Korean patients who had taken computed tomography on both normal and affected shoulder joint as result of shoulder injury. The mean age of the patients was 64.5 years (range, 22-95 years). Radiologic evaluation was done using multiplanar reconstruction technique of the computer tomography on normal proximal humerus. We located ideal entry point of SAHN as the point where humerus intramedullary center axis and humeral head meet. Distance between the entry point and local anatomical landmark was measured. We defined the critical distance as the distance between entry point and the most medial point of the supraspinatus attachment site. For adequate fixation and avoidance of injury to rotator cuff, critical distance should be over 8 mm according to Euler, and we defined the critical type when it is less than 8 mm. Critical distance, sex, age, height, body weight, body mass index was evaluated for the statistical significance. Results: The ideal entry point was as follows: the mean anteroposterior distance, the sagittal distance to the lateral margin of bicipital groove, was 11.5 mm and the mean mediolateral distance, the coronal distance to the lateral margin of grater tuberosity, was 20.5 mm. The mean critical distance, distance from the entry point to the just medial to insertion of the supraspinatus tendon, was 8.0 mm. Critical type with critical distance less than 8 mm was found in 41 in 74 patients (55.4%). Conclusion: The ideal entry point of SAHN in Korean was located on 11.5 mm posteriorly from the lateral margin of bicipital groove and 20.5 mm medially from lateral margin of greater tuberosity. More than half of the cases were critical type. Since critical type can possibly cause rotate cuff injury during nail insertion on entry point, surgeon should consider anatomical variance before choosing surgical option.

• Journal of the Korean Arthroscopy Society
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• v.6 no.2
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• pp.131-135
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• 2002

Object : To evaluate the prognostic factors of the rotator cuff tear after anterior dislocation of the shoulder over the 5th decades of age. Methods : We evaluated twelve patients who had rotator cuff tears combined with primary anterior dislocation of the glenohumeral joint between May 1995 and October 1998. Their age were ranged from 42 to 67-years-old. Two of them were initially presumed to have an injury of the axillary nerve and associated with avulsion fracture of the greater tuberosity. Among twelve patients who had rotator cuff tears, 8 cases had massive, 3 cases had medium and one case had a small sized tear. Results : All the tears of the rotator cuff were repaired and the results were obtained by UCLA shoulder rating scale. Ten cases of them revealed more than good results except for 2 cases who had been unhappy triad of the shoulder injury. Conclusions : In the case of anterior dislocation of shoulder, it is necessary to check the injury of rotator cuff and axillary nerve in the middle age group. If these injuries are combined, proper rotator cuff repair and axillary nerve rehabilitation program would be asked for better results.

• Clinics in Shoulder and Elbow
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• v.15 no.2
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• pp.99-108
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• 2012

Purpose: To evaluate the clinical results of arthroscopic repair with UU-Tension Band suture for full thickness rotator cuff tear above 4 cm sized. Materials and Methods: From January 2006 to October 2011, in 71 full thickness tears above 4 cm sized which is possible to arthroscopic repair to medial margin of greater tuberosity. The group I is 71 patients which is arthroscopic repair with UU-Tension Band suture, and the group II is 20 cases which is arthroscopic repair with simple suture. Both groups were compared with a VAS score for pain, Activity of Daily Living, UCLA score, KSS score in pre operation, 7 months, 1 year and last follow-up. Statistical analysis was performed by student t test and paired t est. Mean age was 63.2 (52~80) year old, mean follow-up was 38.4 (13~62) months. Results: The VAS scores for pain decreased from 8.1 at preoperative period to 1.6 at postoperative last follow-up period in group I (p<0.05), the score decreased from 7.6 at preoperative period to 1.8 postoperative last follow-up period in group II (p<0.05). The significant difference was not noted between two groups (p<0.05). Mean ADL scores increased from 12.5 at preoperative period to 29.0 post operative last follow-up period in group I (p<0.05), the score increased from 11.3 in pre op to 27.5 post-operative last follow-up in group II (p<0.05). The significant difference was not noted between two groups (p<0.05). The UCLA score increased from 12.9 at preoperative period to 28.7 postoperative last follow-up period in group I (p<0.05), the score increased from 13.8 at preoperative period to 30.1 postoperative last follow-up period in group II (p<0.05). The significant difference was not noted between two groups (p<0.05). In comparing of retear which was checked by MRI and ultrasound evaluated at postoperative period 7 months (mean: 27.5 weeks), the retears were 28% in the group I, and 11 shoulders out of 20 shoulders in the group II. The significant differences were noted between two groups (p<0.05). Conclusion: Arthroscopic repair with UU-Tension Band suture and simple suture for full thickness rotator cuff tear above 4 cm sized were not different clinical result between both groups. However, the significant differences were noted in point of failure rate between both groups.

• Clinics in Shoulder and Elbow
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• v.13 no.2
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• pp.250-259
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• 2010

Purpose: The purpose of this study was to evaluate the usefulness and clinical results of arthroscopic double row repair with UU stitches for massive, full-thickness, rotator cuff tears. Materials and Methods: Between January 2007 and July 2009, we consulted on 36 massive tears in which it was possible to repair the middle area of the greater tuberosity by arthroscopy. One group consisted of 11 cases that had a double row repair with UU stitches. A second group consisted of 20 cases that had a single row repair with simple stitches. We compared the 2 groups for pain, Activities of Daily Living, UCLA score, and KSS score. We did this pre operatively, and at 6 months, 1 year and final follow-ups. Statistical analysis included Student's t test and a paired t est. Mean age was 59 (48~70); mean follow-up was 28 (12~43) months Results: VAS scores decreased from 7.5 pre operatively to 1.5 post operatively at the last f/u in the $1^{st}$ group (p<0.05). In the $2^{nd}$ group, the score decreased from 7.6 in pre op to 1.8 post operatively at the last f/u (p<0.05). There was no significant difference between the two groups (p>0.05). Mean ADL increased from 11.5 to 25.1 at the last f/u in the $1^{st}$ group (p<0.05); in the $2^{nd}$ group the ADL score increased from 11.3 to 27.5 (p<0.05). There was no significant difference between the two groups (p>0.05). The UCLA score increased from 13.9 to 31.6 in the $1^{st}$ group (p<0.05), while in the $2^{nd}$ group the score increased from 13.8 to 30.1 (p<0.05); there was no significant difference between the two groups (p>0.05). Comparing MRIs at 3 and 6 months post op, there were retears in 3 of 9 cases in the first group, and in 8 of 15 cases in the second group; there was no significant difference between the two groups (p>0.05). Conclusion: Arthroscopic double row repair with UU stitches for massive, full-thickness rotator cuff tears showed no differences in clinical results. However, it was associated with a significant difference in the incidence of retears.

• Journal of Korean Orthopaedic Sports Medicine
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• v.3 no.1
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• pp.81-86
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• 2004

Objectives: To assess the functional outcome of Bankart repair and rotator cuff repair using miniopen technique in patients with recurrent shoulder dislocation(8 cases) with rotator cuff tears and Bankart lesion of over 40 years. Materials and Methods: From May 1991 to January 2002, twenty two patients were available to participate in the study. Mean age was 52 years old(41-67), Follow-up evaluations averaged 50.5months(10-147). Results: The patients(22 cases) were divided into two groups. Group 1: with recurrent shoulder dislocation(8 cases) with rotator cuff tears and Bankart lesion in patients over 40 years old. Group 2: without Bankart lesion(14 cases). In Group 1, mean average of forward flexion and abduction improved from 122 degrees to 154 degrees at the final follow-up and from 115 degrees to 161 degrees respectively. In terms of University of Pennsylvania patient self-assessment of pain score and VAS, scores improved from 11.0 to 5.5 and from 5.4 to 2.5 respectively. In terms of UCLA score & Constant score, scores also improved from 20.2 to 29.6 and from 48.6 to 69.0 respectively. Functional outcome of Group 1: two patients with excellent, four patients with good, and two patients with fair. Functional outcome of Group 2: two patients with excellent, six patients with good, five patients with fair, and one patient with poor. But they had no statistical significance between the two groups. All cases were improved shoulder pain at the final follow up. And six patients were satisfied with the outcome of shoulder function. Conclusions: This study demonstrates the effectiveness of Bankart repair and rotator cuff repair using miniopen technique in patients with recurrent shoulder dislocation(8 cases) with tears of rotator cuff and Bankart lesion older than 40 years. We recommend Bankart repair and rotator cuff repair at the same time.