Complications after open Latarjet procedure: influence of arm positioning on musculocutaneous and axillary nerve function.

Autor: Lópiz Y; Shoulder and Elbow Unit, Department of Traumatology and Orthopaedic Surgery, Clínico San Carlos Hospital, 5º Planta, Ala Sur. Calle Profesor Martín Lagos S/N, 28004, Madrid, Spain.; Surgery Department, Complutense University, Madrid, Spain., Checa P; Shoulder and Elbow Unit, Department of Traumatology and Orthopaedic Surgery, Clínico San Carlos Hospital, 5º Planta, Ala Sur. Calle Profesor Martín Lagos S/N, 28004, Madrid, Spain. pachebet@gmail.com., García-Fernández C; Shoulder and Elbow Unit, Department of Traumatology and Orthopaedic Surgery, Clínico San Carlos Hospital, 5º Planta, Ala Sur. Calle Profesor Martín Lagos S/N, 28004, Madrid, Spain., Martín Albarrán S; Department of Clinical Neurophysiology, Clínico San Carlos Hospital, Madrid, Spain., López de Ramón R; Department of Traumatology and Orthopaedic Surgery, Ourense's Universitary Hospital Complex, Ourense, Spain., Marco F; Shoulder and Elbow Unit, Department of Traumatology and Orthopaedic Surgery, Clínico San Carlos Hospital, 5º Planta, Ala Sur. Calle Profesor Martín Lagos S/N, 28004, Madrid, Spain.; Surgery Department, Complutense University, Madrid, Spain.
Jazyk: angličtina
Zdroj: European journal of orthopaedic surgery & traumatology : orthopedie traumatologie [Eur J Orthop Surg Traumatol] 2022 Feb; Vol. 32 (2), pp. 243-248. Date of Electronic Publication: 2021 Mar 31.
DOI: 10.1007/s00590-021-02960-y
Abstrakt: Background: Alterations in the anatomical relationships of the musculocutaneous (MCN) and axillary nerves and the influence of arm positioning on these relationships after a Latarjet procedure have been demonstrated in the cadaver, but there are no studies in the literature that establish if there is any neurophysiological repercussion.
Methods: We retrospectively identified 24 patients with a primary or revision open Latarjet procedure. A prospective clinical (Constant-Murley, Rowe and Walch-Duplay and active range of motion), radiographic (with CT), and electrodiagnostic evaluation was made at the most recent follow-up.
Results: Nonunion occurred in four patients (22%); there were, as well, one case of partial coracoid reabsorption (5%) and two (11%) with mild glenohumeral osteoarthritis. In the anatomical position, we found no alterations in the musculocutaneous nerve and two cases (11%) in the axillary nerve slight motor unit loss. In the risk position, 11 cases (61%) had neurophysiological involvement (36% had neurophysiological changes in the musculocutaneous nerve and 64% in the axillary nerve). No differences between patients with or without neurophysiologic changes were found: Constant 87/83; Rowe 89/90; Walch-Duplay 84/78; Forward elevation 175º/170º, abduction 165°/175°; external rotation 48°/45°.
Conclusion: The rate of clinical electromyographic changes in the axillary and MCN in the abducted and externally rotated arm position (risk dislocation position) is higher than in neutral position. Nonunion of the coracoid process must play a role in these neurophysiological changes. Although in the medium-term they don't have clinical impact, further randomized prospective studies with a larger sample size are necessary to determine their true repercussion.
Level of Evidence: Level IV.
(© 2021. The Author(s), under exclusive licence to Springer-Verlag France SAS, part of Springer Nature.)
Databáze: MEDLINE
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