We conducted a multicenter retrospective study of TSAs performed between 2008 and 2011 using a press-fit, standard-length humeral stem and either a pegged or keeled all-polyethylene, cemented glenoid (Univers II; Arthrex, Naples, FL). The inclusion criteria included patients who underwent primary TSA for either primary osteoarthritis or post-traumatic arthritis and patients with subjective outcome scores, range of motion (ROM) findings, and radiographs available at a minimum follow-up of 5 years postoperatively. The exclusion criteria included revision arthroplasty as the index procedure.
Univers 2
Manufactured by Arthrex
Sourced in United States
The Univers II is a versatile laboratory equipment designed for a wide range of scientific applications. It features a compact and durable construction, enabling reliable performance in various laboratory settings.
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Lab products found in correlation
6 protocols using univers 2
1
Long-Term Outcomes of Primary TSA
2
Standardized Anatomic Stemless TSA
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All surgical procedures were performed by the same surgeon (L.N.M) to minimize performance bias. TSA was performed using an anatomic stemless implant (Eclipse system, Arthrex Inc., Naples, FL, USA) as previously described [7 (link), 10 (link)]. Oriented along the specimen’s anatomic retrotorsion, two 1.6 mm K-wires were pre-drilled in line with the desired resection plane, exiting the opposite cortex at the boundary of the articular cartilage. Guided by the two K-wires, subsequent osteotomy was performed using an oscillating saw. After measuring the anterior–posterior dimension of the resected humeral head, the size of the baseplate (trunnion) was determined. The trunnion was then fixed to the resected humeral neck and a hollow screw was inserted. Additionally, the custom-made trunnion used for this study was secured with a small, protruding spike, to allow for easily switching the different prosthetic heads during testing.
Glenoid replacement was performed using a keeled glenoid system (Univers II, Arthrex Inc., Naples, FL, USA). A glenoid guide was placed on the central axis of the exposed articular surface of the glenoid, with the guide handle being oriented in line with the anatomic slope of the anterior neck. Following preparation, a keeled glenoid implant was inserted in the created slot and impacted.
Glenoid replacement was performed using a keeled glenoid system (Univers II, Arthrex Inc., Naples, FL, USA). A glenoid guide was placed on the central axis of the exposed articular surface of the glenoid, with the guide handle being oriented in line with the anatomic slope of the anterior neck. Following preparation, a keeled glenoid implant was inserted in the created slot and impacted.
3
Long-term Outcomes of Anatomic Total Shoulder Arthroplasty
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A multicenter retrospective review was performed on a consecutive series of anatomic TSAs performed with a press-fit standard length humeral stem (Univers II; Arthrex Inc, Naples, FL, USA) and a cemented all-polyethylene glenoid from March 2008 to October 2011. Inclusion criteria included (1) primary anatomic TSA performed for glenohumeral arthritis using a press-fit standard length humeral stem; (2) immediate postoperative and minimum 5-year postoperative radiographs; and (3) preoperative and minimum 5-year postoperative range of motion (ROM) and patient-reported outcome scores. Exclusion criteria included revision arthroplasty or a cemented humeral stem. Four hundred sixty-five TSAs were performed during the study period, of which 47 met the study criteria and were included in the analysis.
4
Shoulder Arthroplasty Surgical Technique
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Surgeries were performed by 16 surgeons. All surgeons used the same press-fit short or standard-length humeral stem with an all-polyethylene glenoid (Univers II; Arthrex, Naples, FL, USA).
The technique included a standard deltopectoral approach with a biceps tenodesis and a subscapularis peel or tenotomy. Postoperative rehabilitation was not standardized.
The technique included a standard deltopectoral approach with a biceps tenodesis and a subscapularis peel or tenotomy. Postoperative rehabilitation was not standardized.
5
Anatomic Stemless Shoulder Arthroplasty Protocol
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Total shoulder arthroplasty was performed using an anatomic stemless implant (Eclipse system, Arthrex Inc., Naples, FL, USA) according to a previously described technique [26 (link), 27 (link)]. Each surgery was performed by the same surgeon (L.N.M.) in order to minimize performance bias. Oriented along the specimen’s anatomic retro-torsion, two 1.6 mm K-wires were pre-drilled in line with the desired resection plane, exiting the opposite cortex at the boundary of the articular cartilage. Guided by the two K-wires, an osteotomy was performed using an oscillating saw. After measuring the anterior-posterior dimension of the resected humeral head, the size of the baseplate (trunnion) was determined. The trunnion was then fixed to the resected humeral neck and a hollow screw was inserted. The custom-made trunnion used for this study was additionally secured with a small, protruding spike, to allow for easily switching the different prosthetic heads during testing.
Glenoid replacement was performed using a keeled glenoid system (Univers II, Arthrex Inc., Naples, FL, USA). A glenoid guide was placed on the central axis of the exposed articular surface of the glenoid, with the guide handle being oriented in line with the anatomic slope of the anterior neck. Following preparation, a keeled glenoid implant was inserted in the created slot and impacted.
Glenoid replacement was performed using a keeled glenoid system (Univers II, Arthrex Inc., Naples, FL, USA). A glenoid guide was placed on the central axis of the exposed articular surface of the glenoid, with the guide handle being oriented in line with the anatomic slope of the anterior neck. Following preparation, a keeled glenoid implant was inserted in the created slot and impacted.
6
Anatomic Stemless Total Shoulder Arthroplasty
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Total shoulder arthroplasty was performed using an anatomic stemless implant (Eclipse system, Arthrex Inc., Naples, FL, USA) according to a previously described technique [3 (link),30 (link)]. Each surgery was performed by the same surgeon (L.N.M.), to minimize performance bias. Oriented along the specimen’s anatomic retro-torsion, two 1.6 mm K-wires were pre-drilled in line with the desired resection plane, exiting the opposite cortex at the boundary of the articular cartilage. Guided by the two K-wires, an osteotomy was performed using an oscillating saw. After measuring the anterior–posterior dimension of the resected humeral head, the size of the baseplate (trunnion) was determined. The trunnion was then fixed to the resected humeral neck and a hollow screw was inserted. The custom-made trunnion used for this study was additionally secured with a small, protruding spike, to allow the different prosthetic heads to be easily switched during testing.
Glenoid replacement was performed using a keeled glenoid system (Univers II, Arthrex Inc., Naples, FL, USA). A glenoid guide was placed on the central axis of the exposed articular surface of the glenoid, with the guide handle being oriented in line with the anatomic slope of the anterior neck. Following preparation, a keeled glenoid implant was inserted in the created slot and impacted.
Glenoid replacement was performed using a keeled glenoid system (Univers II, Arthrex Inc., Naples, FL, USA). A glenoid guide was placed on the central axis of the exposed articular surface of the glenoid, with the guide handle being oriented in line with the anatomic slope of the anterior neck. Following preparation, a keeled glenoid implant was inserted in the created slot and impacted.
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