Academic Journal
Comparison of Cyclic Fatigue Mechanics between UCL Repair with Internal Bracing and UCL Reconstruction
| العنوان: | Comparison of Cyclic Fatigue Mechanics between UCL Repair with Internal Bracing and UCL Reconstruction |
|---|---|
| المؤلفون: | Jones, Christopher Michael, Beason, David P., Dugas, Jeffrey R. |
| المصدر: | Orthopaedic Journal of Sports Medicine ; volume 5, issue 7_suppl6 ; ISSN 2325-9671 2325-9671 |
| بيانات النشر: | SAGE Publications |
| سنة النشر: | 2017 |
| الوصف: | Objectives: UCL reconstruction has become the preferred treatment for UCL injury in elite throwers desiring a return to throwing. Prior reports of UCL repair demonstrated poor results in professional pitchers, with rate of return to the same or higher level pitching between 0% and 63%. 1,3,6,9,11 However, in young athletes without chronic attritional UCL damage, recent data shows reliable and rapid return to sport with primary UCL repair. 2,12,14 We previously introduced a novel UCL repair technique consisting of primary UCL repair, augmented with a spanning tape anchored at either end of the native ligament. Compared to UCL reconstruction, this construct demonstrated significantly greater resistance to gap formation, even at low cycles of valgus loading. 8 The purpose of the current study was to compare the high-cycle fatigue mechanics of augmented UCL repair versus modified Jobe UCL reconstruction. We hypothesized that the repaired specimens would have less gap formation compared to the reconstruction group after 10, 100, and 500 cycles of valgus loading. Methods: Twenty fresh-frozen cadaveric upper extremities (10 matched pairs) were dissected to expose the anterior band of the UCL. 3 The humeral and ulnar insertions of the UCL were identified and marked to measure ligament displacement. 7 Each specimen was potted and mounted on a mechanical test frame. 4,5,8,10,13 A 2 N-m valgus preload was applied to the native elbow followed by a 60 s hold and 500 cycles of valgus loading between 2 N-m and 10 N-m. A longitudinal split in the anterior band was created and the distal attachment of the sublime tubercle was released, simulating a distal avulsion tear of the UCL. Ten cycles were repeated in this torn state. Each pair was randomly separated into either a repair or a reconstruction group (Fig 1). Each specimen was then manually subjected to 100 cycles of flexion-extension range of motion to simulate early rehabilitation protocols. The specimens were again loaded for 500 cycles between 2 N-m and 10 N-m, followed ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1177/2325967117s00218 |
| DOI: | 10.1177/2325967117S00218 |
| الاتاحة: | https://doi.org/10.1177/2325967117s00218 https://journals.sagepub.com/doi/pdf/10.1177/2325967117S00218 |
| Rights: | https://journals.sagepub.com/page/policies/text-and-data-mining-license |
| رقم الانضمام: | edsbas.B2326CD1 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1177/2325967117s00218 |
|---|