* Inferior: the superior border of the [[teres major]]; inferiorly
* Lateral: the long head of the [[triceps]]; laterally
* Superior: Teres minor or Subscapularis
For the inferiorsuperior border, some sources list the [[teres minor]],<ref name="isbn0-7817-5309-0"/><ref>{{SUNYAnatomyLabs|03|05|01|01}} - "Triangular Space of Scapular Region"</ref> while others list the [[subscapularis]].<ref name="isbn0-443-06612-4">{{cite book |author=Adam Mitchell; Drake, Richard; Gray, Henry David; Wayne Vogl |title=Gray's anatomy for students |publisher=Elsevier/Churchill Livingstone |___location= |year=2005 |pages= |isbn=0-443-06612-4 |oclc= |doi=}}</ref>
