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- 저자 : Thema A Nicholson (검색결과 2 건)
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Outcomes of Shoulder Arthroplasty Performed for Postinfectious Arthritis
Eric Michael Padegimas,Thema A Nicholson,Stephen Silva,Matthew L Ramsey,Gerald R Williams,Mark D Lazarus,Surena Namdari 대한정형외과학회 2018 Clinics in Orthopedic Surgery Vol.10 No.3
Background: The purpose of this study was to evaluate the functional outcomes, infection rate, and complications associated with shoulder arthroplasty for sequelae of prior septic arthritis. Methods: This is a retrospective cohort study of 17 patients who underwent shoulder arthroplasty for sequelae of septic arthritis. Patients were analyzed for patient-reported outcomes, complications, and reoperations. Results: The 17 patients in this cohort were an average age of 65.4 ± 12.2 years old, were 58.8% male, and had an average body mass index of 27.9 ± 4.1 kg/m2. These patients underwent 14 reverse shoulder arthroplasties (RSAs; 11 after antibiotic spacer placement), one anatomic total shoulder arthroplasty after antibiotic spacer placement, and two hemiarthroplasties (both after antibiotic spacer placement). Two patients underwent reoperation (dislocated RSAs). There were four complications (23.5%): two RSA dislocations, one acromial stress fracture, and one atraumatic rotator cuff tear after hemiarthroplasty. There were no cases of postoperative wound complications or infection. At an average of 4.1 ± 1.8 years of follow-up for all 17 of 17 cases, the average visual analogue scale pain score was 4.6 ± 2.3, average Single Assessment Numeric Evaluation Score was 59.3 ± 23.7, average American Shoulder and Elbow Surgeons Score was 57.6 ± 15.5, and average Simple Shoulder Test was 6.9 ± 2.6 based on “yes” responses. Conclusions: Shoulder arthroplasty after septic arthritis had inconsistent functional outcomes and high complication rates but no reinfection.
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Anatomic factors associated with degeneration and fraying of the coracoacromial ligament
Ryan Lopez,Jaspal Singh,Mohammad Ghoraishian,Thema Nicholson,Stephen Gates,Surena Namdari 대한견주관절학회 2024 대한견주관절의학회지 Vol.27 No.1
Background: The coracoacromial ligament (CAL) is frequently observed to be damaged during arthroscopy and it is unclear how demographic, anatomic, and radiographic factors are related to CAL degeneration in full-thickness rotator cuff tears. Methods: A prospective study was conducted of patients at a single institution undergoing shoulder arthroscopy for first-time, full-thickness rotator cuff tears. We evaluated preoperative anteroposterior radiographs to obtain critical shoulder angle, glenoid inclination, acromial index, acromiohumeral distance, lateral acromial angle, and acromial morphology. We documented CAL quality, rotator cuff tear size and pattern during arthroscopy. Multiple logistic regression was used to identify predictive factors for encountering severe CAL fraying during arthroscopy. Results: Shoulders had mild CAL degeneration in 58.1% of cases, whereas severe CAL degeneration was present in 41.9% of shoulders. Patients with severe CAL attrition were significantly older (62.0 years vs. 58.0 years, P=0.042). Shoulders with severe CAL attrition had large rotator cuff tears in 54.1% of cases (P<0.001), and tears involving the infraspinatus (63.2% vs. 29.6%, P=0.003). The severe degeneration group was more likely to have a larger critical shoulder angle measurement on preoperative radiographs than those in the mild attrition group (36.1°±3.6° [range, 30°–45°] vs. 34.1°±3.8° [range, 26°–45°], P=0.037). Conclusions: While the clinical impact of CAL degeneration remains uncertain, increased severity of CAL degeneration is associated with older age, larger rotator cuff tear size, presence of infraspinatus tearing, and increased preoperative critical shoulder angle. Level of evidence: III.
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