The size of this recess is variable, and has been classified into various types by different authors. One scheme divides the sublabral recess into 3 types. In a type 1 attachment, the labral-bicipital complex is firmly attached to the glenoid rim and an arthroscopic probe cannot be inserted between the labrum and the glenoid. A type 2 attachment has a small sulcus between the labrum and the glenoid rim, while a type III attachment has a deep sulcus between the labrum and the glenoid rim that allows a probe to be inserted between the two.
The superior sublabral recess can be continuous with the sublabral foramen.
References
- Cooper DE, Arnoczky SP, O'Brien SJ, Warren RF, DiCarlo E, Allen AA. Anatomy, histology, and vascularity of the glenoid labrum. An anatomical study. J Bone Joint Surg Am. 1992 Jan;74(1):46-52.
- De Maeseneer M, Van Roy F, Lenchik L, Shahabpour M, Jacobson J, Ryu KN, Handelberg F, Osteaux M. CT and MR arthrography of the normal and pathologic anterosuperior labrum and labral-bicipital complex. Radiographics. 2000 Oct;20 Spec No:S67-81.
- Kreitner KF, Botchen K, Rude J, Bittinger F, Krummenauer F, Thelen M. Superior labrum and labral-bicipital complex: MR imaging with pathologic-anatomic and histologic correlation. AJR Am J Roentgenol. 1998 Mar;170(3):599-605.
- Kwak SM, Brown RR, Resnick D, Trudell D, Applegate GR, Haghighi P. Anatomy, anatomic variations, and pathology of the 11- to 3-o'clock position of the glenoid labrum: findings on MR arthrography and anatomic sections. AJR Am J Roentgenol. 1998 Jul;171(1):235-8.
- Smith DK, Chopp TM, Aufdemorte TB, Witkowski EG, Jones RC. Sublabral recess of the superior glenoid labrum: study of cadavers with conventional nonenhanced MR imaging, MR arthrography, anatomic dissection, and limited histologic examination. Radiology. 1996 Oct;201(1):251-6.
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