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Clin Shoulder Elbow > Volume 15(2); 2012 > Article
Clinics in Shoulder and Elbow 2012;15(2):123-129.
DOI: https://doi.org/10.5397/CiSE.2012.15.2.123    Published online December 31, 2012.
Clinical Comparison of Two Types of Hook Plate in Surgical Treatment of Acromioclavicular Dislocation: AO Hook Plate and Wolter Plate
Jea Yeol Choi, Eugene Kim, Haw Jae Jeong, Jin Whan Ahn, Hun Kyu Shin, Se Jin Park, Seung Hee Lee, Jae Wook Lee, Kyu Bo Choi
Department of Orthopedic Surgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea. dreugene0809@gmail.com
견봉 쇄골 관절 탈구의 수술적 치료에서 두 가지 갈고리 금속판의 임상적 비교 - AO Hook Plate와 Wolter Plate -
최재열·김유진·정화재·안진환·신헌규·박세진·이승희·이재욱·최규보
성균관대학교 의과대학 강북삼성병원 정형외과학교실
Abstract
OBJECTIVE
To evaluate if acromial locking in hook plate is necessary for surgical treatment of acromioclavicular dislocation by compare Wolter plate and AO hook plate.
METHODS
Seventy one patients who have Rockwood type III to V acromioclavicular joint dislocation treated with AO hook plate and Wolter plate were involved. Among them, 39 patients were treated with Wolter hook plate and 32 patients with AO hook plate. The Constant-Murley score and the range of motion of shoulder joint were measured on postoperative 1st, 3rd, 6th and 12th months, and the radiological complications involving plate and bone were investigated.
RESULTS
Constant-Murley score of postoperative one year were 83.2+/-6.8 in AO hook plate group and 85.2+/-5.3 in Wolter plate group without statistical difference (p<0.05). Faster recover of forward elevation and external rotation were examined in Wolter plate group at first and third months after surgery than those of AO hook plate group, but there were no significant difference between after six months or later after surgery. Four cases of loosen or broken screws and one case of pull-out of plate were found in Wolter plate group. Seven cases of subacromial bony erosion and one periprosthetic fracture were found in AO hook plate group.
CONCLUSION
Although clinical outcomes of both two methods were same, no matter if acromial locking system was or not. More radiological complication of plate and bone were found in AO hook plate than that of Wolter plate. However also had disadvantage like larger incision during surgery.
Key Words: Acromioclavicular dislocation; AO Hook plate; Wolter plate; Acromial locking


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