Background: Neglected partial subscapularis tears often cause functional impairment even after repair of the supraspinatus and infraspinatus tear is done. Numerous physical examinations for detecting partial subscapularis tears have been described in previous studies.
Purpose: To analyze the relationship between the preoperative clinical features and the severity of a partial subscapularis tear and to provide diagnostic clues for patients requiring subscapularis repair.
Study Design: Cohort study (Diagnosis); Level of evidence, 2.
Methods: This retrospective study included 286 patients who underwent arthroscopic shoulder surgery between 2020 and 2022. Preoperative clinical features, including range of motion, functional scores, muscle strength ratio, modified belly-press test (measuring belly-press angle), and bear-hug test, were collected. Magnetic resonance imaging (MRI) evaluation was done according to the Yoo and Rhee classification. Types of subscapularis tear, supraspinatus lesion, and biceps lesion were recorded during arthroscopic surgery. A comparison of preoperative clinical features between the no-repair group (type 2A or less) and surgical repair group (type 2B or more) was done. The optimal cutoff value of the belly-press angle was determined and the diagnostic performance of the belly-press angle, bear-hug test, and MRI were evaluated using the receiver operating characteristic curve.
Results: Among 286 patients, 189 (66.1%) had subscapularis tears with type 2A or more. There was a significant difference in muscle strength ratio of the belly-press ( < .001), belly-press angle ( < .001), and bear-hug test ( < .001) between the no-repair group (type 2A or less) and the surgical repair group (type 2B or more). With a belly-press angle of 15° as a new cutoff value, the modified belly-press test showed 67.6% sensitivity, 73.9% specificity, and 69.6% accuracy in detecting type 2B or higher subscapularis tear.
Conclusion: Patients with type 2A and 2B subscapularis tears (according to the Yoo and Rhee classification) showed differences in belly-press strength ratio, belly-press angle, and bear-hug test. The cutoff value of the 15° belly-press angle showed an accuracy of 69.6% in detecting subscapularis tears with type 2B or higher.
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http://dx.doi.org/10.1177/03635465231193956 | DOI Listing |
Am J Sports Med
October 2023
Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
J Shoulder Elbow Surg
November 2022
Oregon Shoulder Institute, Medford, OR, USA. Electronic address:
Background: Although preoperative function and range of motion (ROM) are determinants of postoperative outcome following reverse shoulder arthroplasty (RSA), there is limited data on the influence of preoperative rotator cuff status. The purpose of this study was to evaluate the relationship between preoperative rotator cuff physiologic cross-sectional area (PCSA) and strength on postoperative RSA outcome.
Methods: A retrospective review was conducted on 53 primary RSAs from a multicenter database performed between 2015 and 2019 using a 135° humeral neck-shaft angle.
Acta Ortop Mex
April 2019
División de Investigación en Salud, Hospital de Traumatología y Ortopedia, Unidad Médica de Alta Especialidad (UMAE) «Dr. Victorio de la Fuente Narváez», Instituto Mexicano del Seguro Social (IMSS). Colector 15 s/n (Av. Fortuna), Esq. Av. Politécnico Nacional, Col. Magdalena de las Salinas, Del. Gustavo A. Madero, CP 07760, Ciudad de México. México.
Arch Orthop Trauma Surg
January 2016
Department of Trauma and Reconstructive Surgery, Friederikenstift Hospital, Hannover, Germany.
Background: The purpose of the study was to evaluate the recovery of the subscapularis and shoulder function dependent on the type of lesion and type of surgical treatment, when compared to the non-affected contralateral shoulder. We hypothesized that regardless of type of lesion and performed surgical intervention, a significant muscle insufficiency as compared to the healthy contralateral side will remain.
Patients And Methods: Sixty-eight patients (14 females and 54 males) with an anterior or anterosuperior cuff lesion at an average age of 55.
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