RT Journal Article
T1 Variation of the subscapularis tendon at the fetal glenohumeral joint
A1 Abe, Shinichi
A1 Aoki, Mitsuhiro
A1 Nakao, Tadashi
A1 Kasahara, Masaaki
A1 Rodríguez Vázquez, José Francisco
A1 Murakami, Gen
A1 Cho, Baik Hwan
AB We examined the topohistology of the subscapularis tendon at the glenohumeral joint in 10 mid-term (15-16 weeks of gestation) and 10 late-stage (27-32 weeks) human fetuses. At both stages, there were two patterns of terminal course of the subscapularis tendon: 1) the tendon was tightly attached to the medial part of the joint capsule and extended anterosuperiorly along the capsule to the lesser tubercle (7/10 mid-term fetuses; 5/10 late-stage fetuses); 2) the tendon passed superiorly through the joint cavity for a long distance in combination with the subcoracoid bursa opening widely to the joint cavity (3/10 mid-term fetuses; 5/10 late-stage fetuses). The lower glenoid labrum tended to be well developed in the former pattern because the subscapularis tendon did not interfere with the superior extension of the labrum. With only one exception (late stage), the capsule-attaching tendon was seen in fetuses in which the coracoid process was located on the superior side of the lesser tubercle, whereas the intra-articular tendon accompanied the coracoid process at the same supero-inferior level of the tubercle. Thus, the topographical relationship between the coracoid process and lesser tubercle in fetuses seemed to determine the courses of the subscapularis tendon at the glenohumeral joint. The present variation in the subscapularis tendon was likely connected with the adult morphologies of the middle and inferior glenohumeral ligaments or folds, whose variations are well known.
PB Editorial Board of Okajimas Folia Anatomica Japonica
SN 0030-154X
SN 1881-1736
YR 2014
FD 2014
LK https://hdl.handle.net/20.500.14352/110229
UL https://hdl.handle.net/20.500.14352/110229
LA eng
NO Abe S, Aoki M, Nakao T, Kasahara M, Rodriguez-Vazquez JF, Murakami G, Cho BH. Variation of the subscapularis tendon at the fetal glenohumeral joint. Okajimas Folia Anat Jpn. 2014;90(4):89-95. doi: 10.2535/ofaj.90.89. PMID: 24815107.
DS Docta Complutense
RD 7 abr 2025