Seung-Jun Lee1, Young-Kyoung Min2. 1. Department of Orthopedic Surgery, Medical Research Institute, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, South Korea. 2. Department of Orthopedic Surgery, Inje University Busan Paik Hospital, Inje University College of Medicine, 75 Bokji-ro, Busanjin-gu, Busan, 47392, South Korea. dazuri@hanmail.net.
Abstract
PURPOSE: The factors affecting the anatomical and functional outcomes of arthroscopic superior capsular reconstruction (ASCR) were investigated in this study. Continuity between the posterior remnant tissue and graft, as well as medial-to-lateral anatomical graft continuity, might play a vital role in shoulder stability and functional recovery, which could be correlated with postoperative factors such as the acromiohumeral distance (AHD). METHODS: Thirty-two patients (36 shoulders) who underwent ASCR were included. The follow-up period was 24.8 ± 6.9 months. The relationship between graft continuity and preoperative, intraoperative, and postoperative factors that could affect the clinical and radiological outcomes of ASCR were investigated. RESULTS: The American Shoulder and Elbow Surgeons score increased from 50.3 ± 9.1 points preoperatively to 84.0 ± 5.0 points postoperatively (p < 0.01), and the Constant score increased from 56.3 ± 9.0 to 82.8 ± 5.6 points (p = 0.02). Re-tearing occurred in 13 patients during the postoperative follow-up period. The re-tear rate was relatively high (36.1%). The gap between the immediate postoperative and preoperative AHDs was 1.6 ± 2.2 mm in the re-tear (+) group and 3.8 ± 2.8 mm in the re-tear (-) group (p = 0.02). The integrity of the posterior remnant tissue had a statistically significant and different re-tear rate (p < 0.01). CONCLUSION: Care should be taken in patients with inadequate AHD improvement and poor posterior remnant tissue immediately postoperatively, because the possibility of re-tearing is high. Therefore, better results can be predicted when considering these factors at the time of surgery. LEVEL OF EVIDENCE: IV.
PURPOSE: The factors affecting the anatomical and functional outcomes of arthroscopic superior capsular reconstruction (ASCR) were investigated in this study. Continuity between the posterior remnant tissue and graft, as well as medial-to-lateral anatomical graft continuity, might play a vital role in shoulder stability and functional recovery, which could be correlated with postoperative factors such as the acromiohumeral distance (AHD). METHODS: Thirty-two patients (36 shoulders) who underwent ASCR were included. The follow-up period was 24.8 ± 6.9 months. The relationship between graft continuity and preoperative, intraoperative, and postoperative factors that could affect the clinical and radiological outcomes of ASCR were investigated. RESULTS: The American Shoulder and Elbow Surgeons score increased from 50.3 ± 9.1 points preoperatively to 84.0 ± 5.0 points postoperatively (p < 0.01), and the Constant score increased from 56.3 ± 9.0 to 82.8 ± 5.6 points (p = 0.02). Re-tearing occurred in 13 patients during the postoperative follow-up period. The re-tear rate was relatively high (36.1%). The gap between the immediate postoperative and preoperative AHDs was 1.6 ± 2.2 mm in the re-tear (+) group and 3.8 ± 2.8 mm in the re-tear (-) group (p = 0.02). The integrity of the posterior remnant tissue had a statistically significant and different re-tear rate (p < 0.01). CONCLUSION: Care should be taken in patients with inadequate AHD improvement and poor posterior remnant tissue immediately postoperatively, because the possibility of re-tearing is high. Therefore, better results can be predicted when considering these factors at the time of surgery. LEVEL OF EVIDENCE: IV.
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