Prevalence, variants, and morphometrics of Palmaris Longus tendon: a magnetic resonance imaging study
- PDF / 681,391 Bytes
- 5 Pages / 595.276 x 790.866 pts Page_size
- 60 Downloads / 166 Views
ORIGINAL ARTICLE
Prevalence, variants, and morphometrics of Palmaris Longus tendon: a magnetic resonance imaging study Raghid Kikano1 · Charlotte Charbel1 · Chahine Assi2,3 · Kaissar Yammine2,3 Received: 29 September 2020 / Accepted: 20 October 2020 © Springer-Verlag France SAS, part of Springer Nature 2020
Abstract Purpose The palmaris longus (PL) tendon present a high degree of variations; the commonest is its absence which could reach more than 40% in some populations. The PL tendon is highly relevant in hand reconstructive surgery; however, MRI variations of PL tendon have been exceptionally reported. To this, this study investigated PL tendon variations using MRI in a Lebanese population. Methods This is a retrospective study of distal forearm MRI examinations to evaluate the presence, anatomical variations and morphometric of PL tendon. The outcomes were set as overall frequency, gender-based and side-base frequencies, correlations between prevalence and gender/side, morphological variants, thickness, and width of PL tendon. Results The sample comprised 335 patients including a total of 339 MRI scans. The PL was present in 221 wrists (65.2%), and bilaterally in only one (25%) out of the 4 bilateral cases. All PL were located using the Axial T1 views. Univariate and multivariate analyses showed no correlation with side, gender, or Tesla power. The only morphological variation was a reversed PL in 2 cases (0.6%). The mean width was 4.24 ± 1.2 mm. The mean thickness was 2.75 ± 0.6 mm. Conclusion As far as we know, this is the first study to report the total array of variations of PL tendon using MRI, and its prevalence in a Lebanese population. The mean width of PL tendon calculated with high quality MR imaging was found to be similar to that reported by cadaveric studies. Keywords Palmaris longus · Magnetic resonance imaging · Anatomic variation
Introduction The palmaris longus (PL) muscle is a fusiform superficial flexor muscle of the forearm which is highly relevant in clinical practice. Classically, it takes origin from the medial epicondyle of the humerus and inserts onto the connective tissue of the palmar aponeurosis and flexor retinaculum [4, 21]. Although it is considered as an accessory flexor muscle of the wrist, PL tendon is of high importance in both * Kaissar Yammine [email protected] 1
Department of Diagnostic Radiology, School of Medicine, Lebanese American University Medical Center-Rizk Hospital, Lebanese American University, Beirut, Lebanon
2
Department of Orthopedic Surgery, School of Medicine, Lebanese American University Medical Center-Rizk Hospital, Lebanese American University, Beirut, Lebanon
3
Center for Evidence-Based Anatomy, Sport and Orthopedics Research, Beirut, Lebanon
orthopedic and reconstructive surgery [2]. For instance, in hand surgery the PL tendon could be used as a graft for digital flexor and extensor tendon repair, flexor pollicis longus repair, chronic mallet finger repair, and carpometacarpal joint arthroplasty [10, 18]. It has also been used in
Data Loading...
