A connection assembly 10 usable for interconnecting two elongate frame members 12 which each include a channel 14. An elongate link member 22 is locatable in the channels 14 of the adjacent members 12 and extending therebetween. A respective connection assembly 20 is locatable in each of the channels 14 to engage against the link member 22 and retain same in the respective channel 14. Each connection assembly 20 is selectively movable between an engaged and a disengaged condition to respectively connect the two frame members 12, or permit the frame members 12 to be pulled apart.

A picture frame includes four frame sides forming a rectangular frame structure. An end portion of each frame side is provided with a mounting groove, and the frame side is provided with a picture groove for receiving an edge of a picture. The picture frame also includes four corners, with each corner arranged between two adjacent frame sides and provided with an insertion portion. The insertion portion is configured to be inserted into the mounting groove and connected to the mounting groove in a detachable manner. Each of the frame sides includes a first side that faces away from a wall surface during use and a second side that faces the wall surface during use. The picture groove is provided on the first side and/or the second side of each of the frame sides.