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Biocomposite anchor may decrease incidence of peri-anchor cysts in rotator cuff tears
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Patients with medium- to large-sized rotator cuff tears treated with a biocomposite medial-row anchor experienced a decrease in the incidence and severity of peri-anchor cysts at 18 months postoperatively, according to published results.
Seok Won Chung, MD, PhD, and colleagues performed an MRI on 40 consecutive patients who underwent arthroscopic repair for medium- to large-sized rotator cuff tears using the poly-L-lactic acid/polyglycolic acid-beta tricalcium phosphate biocomposite medial-row anchor (Fixone Anchor B, Aju Medical) at 6 and 18 months postoperatively. Researchers evaluated patients for peri-anchor cyst formation, anchor absorption and healing failures. Researchers also collected demographic and clinical data and assessed functional outcomes at a minimum of 18 months after surgery.
Results showed 24 patients and seven patients had peri-anchor cysts at 6 and 18 months postoperatively, respectively. Despite no anchors identified as absorbed at 6 months, researchers found 73.7% of patients had complete or near-full absorption at 18 months. Researchers noted patients with significantly larger tear size in the anteroposterior dimension and greater retraction experienced persistent peri-anchor cysts. Patients with vs. those without persisting peri-anchor cysts had no differences in healing failures and functional outcomes, according to results, and anchors inserted in either the greater tuberosity or the lesser tuberosity revealed no differences in peri-anchor cyst formation and anchor absorption.
Based on the results of this study, the researchers noted patients with medium- to large-sized rotator cuff tears may have a “high probability that the peri-anchor cyst will disappear or diminish” in the late postoperative period.
“This result may be informative for surgeons when counseling patients who show a peri-anchor cyst under postoperative imaging and may guide future treatment plans,” the authors wrote. – by Casey Tingle
Disclosure: This research was supported by a grant from the Health Technology R&D Project through the Korea Health Industry Development Institute, funded by the Ministry of Health & Welfare, Republic of Korea and by the Basic Science Research Program through the National Research Foundation of Korea, funded by the Ministry of Science and ICT, Republic of Korea.
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