Patent ID: 8906022

Claim:
A lock for a bone implant, the implant comprising: a proximal base and a distal base that define a longitudinal axis; and a web having a proximal end and a distal end, the proximal end fixed to the proximal base and the distal end fixed to the distal base, the web, after being inserted into a bone, urging radially away from the axis; the lock comprising: a first threaded cannula that is fixed to the proximal base and substantially coaxial with the axis; a second threaded cannula that is fixed to the distal base, substantially coaxial with the axis and disposed apart from the first threaded cannula; and a screw that is configured to be advanced into the first threaded cannula after the web reaches an expanded state inside the bone, advanced along the axis to the second threaded cannula and advanced into the second threaded cannula without substantially changing a distance between the first threaded cannula and the second threaded cannula; wherein engagement of the screw with the first threaded cannula and the second threaded cannula locks the web in the expanded state.