Type I compartment was found in 7 sides in males (29.2%) versus 6 sides in females (37.5%, P =.
The anatomical variations of the first extensor compartment were classified into 3 types. The septum length was recorded with the radial styloid process as the reference point. The presence of a septum in the first extensor compartment was examined. This study aimed to examine the incidence and length of the first extensor compartment septum.įorty sides of the wrists in 20 cadavers were used. The presence of a septum in the first extensor compartment is closely associated with the pathophysiology of de Quervain disease, and affects the efficacy of corticosteroid injection and surgical release. The work cannot be changed in any way or used commercially without permission from the journal.
Extensor compartments license#
This is an open access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND), where it is permissible to download and share the work provided it is properly cited. The authors declare that they have no competing interests. All authors read and approved the final manuscript. JQX and OYY interpreted the patient data. Such anomalies tend to be less common in the general population and are, presumably, asymptomatic.Ĭlinical relevance: As septation of the first extensor compartment and multiple APL tendons appears to represent risk factors for the development of DQT, prior knowledge of the frequency of such anomalies may assist surgeons in pre-operative evaluation and perioperative procedures.DDepartment of Obstetrics, Affiliated Hospital of Qingdao University, Qingdao, Shandong, China.Ĭorrespondence: Ji-Xia Wu, Department of Obstetrics, Affiliated Hospital of Qingdao University, No.16, Jiangsu Road, Qingdao, Shandong 266003, China (e-mail: ).Ībbreviations: APL = abductor pollicis longus, EPB = extensor pollicis brevis.Īuthorship: ZYG performed or participated the study. No anatomical variations in the EPB tendon were observed in the cadaveric group.Ĭonclusion: The predominance of the septated first extensor compartment and the presence of supernumerary APL tendons observed in the DQT group indicated that these anatomical variations may be associated with the syndrome. In the cadaveric group, 21.5% (14/65) of the anatomical specimens exhibited double tunnel in the first extensor compartment, while supernumerary APL tendons occurred in 52.3% (34/65) of the wrists. In one patient, the EPB tendon was absent.
Supernumerary APL tendons were present in 86.1% of DQT patients (87/101), whereas double EPB tendons occurred in seven patients. Results: The occurrence of septation in the first extensor compartment was observed in 62.4% of the DQT group (64/101). Methods: A cross-sectional study was conducted during the period January 2013 to May 2014 in which anatomical variations identified in the first extensor compartments of the wrists of 101 DQT patients who had undergone tenolysis were compared with those detected in the wrists of 65 cadavers without DQT determination. The aim of this study was to test the hypothesis that such patients exhibit significantly more anatomical alterations in the first extensor compartment, the abductor pollicis longus (APL) tendons and the extensor pollicis brevis (EPB) tendons in comparison with the general population using cadavers. Purpose: Anomalies of the first extensor compartment are widely present in patients presenting with De Quervains tenosynovitis (DQT) and require surgical release of the wrist tendons. Surgical and anatomical studies on De Quervains tenosynovitis syndrome: Variations in the first extensor compartment Paulo Randal Pires Júnior, Paulo Randal Pires, Marco Antônio Percope de Andrade, Gustavo Silame Maranhão Lima.
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