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  • Title: Reverse shoulder arthroplasty after failed tendon transfer for irreparable posterosuperior rotator cuff tears.
    Author: Marigi EM, Harstad C, Elhassan B, Sanchez-Sotelo J, Wieser K, Kriechling P.
    Journal: J Shoulder Elbow Surg; 2022 Apr; 31(4):763-771. PubMed ID: 34592412.
    Abstract:
    BACKGROUND: Tendon transfers (TTs) can be successful for the management of selected posterosuperior functionally irreparable rotator cuff tears. However, when these procedures fail to provide adequate pain relief or functional improvement, reverse shoulder arthroplasty (RSA) is commonly considered the next treatment option. The effect of prior TT on RSA remains largely unknown. The purposes of this investigation were to evaluate the outcomes of RSA after previous TT performed for posterosuperior functionally irreparable rotator cuff tears and to determine the effect of various TT types on RSA. METHODS: A retrospective review of 2 institutional databases identified 33 patients who underwent RSA implantation between 2006 and 2019 with a previous failed tendon transfer (FTT) of the shoulder and at least 2 years of clinical follow-up. FTTs included 21 latissimus dorsi transfers, 6 latissimus dorsi and teres major (LD-TM) transfers, and 6 lower trapezius transfers. RSAs were performed at an average of 5.5 years (range, 0.3-28 years) after FTT, with a mean follow-up period of 4.1 ± 2.0 years. Outcomes evaluated included the visual analog scale pain score, range of motion, absolute Constant-Murley score (CS) and relative CS, American Shoulder and Elbow Surgeons score, Subjective Shoulder Value, complications, and implant survivorship free of reoperation or revision. RESULTS: RSA significantly improved pain and function, with improvements in the visual analog scale pain score (6.2 preoperatively vs. 2.2 at most recent follow-up, P < .001), active elevation (85° vs. 111°, P < .001), American Shoulder and Elbow Surgeons score (51 vs. 74, P = .001), absolute CS (34 vs. 48, P = .003), and relative CS (42% vs. 59%, P = .002), exceeding the minimal clinically important difference threshold. There were 7 complications (21%) across the entire cohort, with dislocation (n = 3, 9.1%) as the most common complication. Comparison across TT groups showed that LD-TM transfer had the highest complication rate (3 shoulders, 50%), followed by lower trapezius transfer (1 shoulder, 16.7%); latissimus dorsi transfer had the lowest rate (3 shoulders, 14.3%; P = .037). Survivorship free of revision or reoperation was estimated to be 90.1% at 1 year, 84.9% at 2 years, and 71.2% at 5 years, with no difference among TT groups (P = .654). CONCLUSIONS: RSA can serve as a viable salvage option for FTT procedures. At mid-term follow-up, RSA led to significant improvements in pain, range of motion, and patient-reported outcomes. Patients with prior LD-TM transfers may have a higher complication rate, but no other differences were found between TT groups.
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