Spacer For Spinal Implant

5) A spinal implant inserted about a surgically created cavity proximate to one or more vertebrae;

• said spinal implant comprising:
• a) a biocompatible cage comprising:
• i) a length having a central longitudinal axis and a plurality of sides, wherein at least some of said sides comprise a plurality of openings surrounding a channel;
• said openings capable of exposing osteogenic or arthrodesis accelerating substances to said surgically created cavity;
• and
• ii) a first end perimeter comprising an open entry into said channel;
• b) an end cap comprising:
• i) a border facing said biocompatible cage;
• ii) a plate extending in a lengthwise direction, parallel said central longitudinal axis, away from said border and comprising at least one opening capable of receiving a fastener;
• and
• iii) a pair of opposed docking slides extending from said border toward said biocompatible cage;
• said docking slides adapted to engage inward sides of said biocompatible cage, wherein said docking slides' surfaces engaging said inward sides of said biocompatible cage are without surface areas adapted for impeding removal of said docking slides from said biocompatible cage;
• and
• c) a spacer adapted for allowing adjustment of length of said spinal implant and sandwiched between said biocompatible cage and said end cap;
• said spacer comprising:
• i) a first leg extending toward the inward side of said spinal implant;
• ii) a second leg opposed from said first leg and extending toward the inward side of said spinal implant;
• and
• iii) an anterior section anterior to said plate;
• said anterior section sharing a margin with outward ends of said first and said second legs and extending in a lengthwise direction parallel said central longitudinal axis.

11) A combination comprising a spacer positioned between a surgically implanted first spinal device and a surgically implanted second spinal device, wherein said first and said second spinal devices include a common longitudinal axis;

• said spacer comprising:
• a) a first leg sandwiched between said first and said second spinal devices, wherein said first leg comprises a first side comprising apertures adapted to engage some of a plurality of spikes extending, parallel said common longitudinal axis, from one of said spinal devices;
• b) a second leg sandwiched between said first and said second spinal devices, wherein said second leg comprises a first side comprising apertures adapted to engage some of said spikes extending, parallel said common longitudinal axis, from said one of said spinal devices;
• and
• c) an anterior section anterior to said first and said second spinal devices and connected with an outward end of said first leg and an outward end of said second leg.