The posterior bundle of the elbow medial collateral ligament: biomechanical study and proposal for a new reconstruction surgical technique
| Autor: | S. Pastorelli, S. Vanni, Arman Sard, E. Dutto, Roberto Rotini, Bruno Battiston |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Male
Elbow Joint Dislocations Cadaveric study Elbow dislocation Elbow instability Posterior bundle of medial collateral ligament Surgical reconstruction Surgery Orthopedics and Sports Medicine 0302 clinical medicine Recurrence Elbow Joint Medicine Joint dislocation Aged 80 and over 030222 orthopedics Medial collateral ligament biology Collateral Ligaments Anatomy Middle Aged musculoskeletal system Biomechanical Phenomena medicine.anatomical_structure Female Joint Instability musculoskeletal diseases medicine.medical_specialty Rotation Joint stability Supination 03 medical and health sciences Cadaver Humans Pronation Aged business.industry 030229 sport sciences Plastic Surgery Procedures medicine.disease biology.organism_classification body regions Valgus business Cadaveric spasm |
| Popis: | The medial collateral ligament (MCL) is one of the primary elbows stabilizers. It is composed of an anterior bundle (AB), a posterior bundle (PB) and a transverse bundle. In elbow dislocations, until today MCL reconstruction has addressed the AB only. The purpose of this paper is to understand the biomechanical role of the PB of the MCL and to propose a new surgical technique for the simultaneous reconstruction of the anterior and posterior bundles, preventing the risk of recurrent posterior dislocation or posteromedial rotational instability (PMRI). Sixteen cadaveric elbows were subjected to a force in compression, supination valgus and pronation varus. The residual stability was evaluated in three conditions: intact MCL, sectioned AB and sectioned AB + PB. The tests were performed in collaboration with the Department of Mechanical and Aerospace Engineering of the Politecnico di Torino. In six elbows, the MCL was then reconstructed with the new technique. Complete posterior elbow dislocation does not occur until the PB is sectioned. The section of the AB alone causes elbow instability in valgus stress, but not a dislocation. The reconstruction of the AB and the PB using the described technique allows a good recovery of range of motion and joint stability. The PB of the MCL has a primary role in elbow stability against valgus stress, and it prevents elbow posterior dislocation at all flexion angles. The described reconstruction technique should reduce the risk of residual PMRI. |
| Databáze: | OpenAIRE |
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