Home > Products > Biologics > Callos
  • Impact
    Impact is mostly used for open voids and has a 4-minute setting time
  • Inject
    Inject is used for minimally invasive procedures and has a 6-minute setting time
  • Ease of Use
    Callos Bone Void Filler has a mixing and delivery system that results in consistent mixing every time. It sets quickly in an aqueous environment and can be manipulated post-implantation, giving the surgeon an opportunity to refine the reconstruction.

Acumed offers a variety of synthetic calcium phosphates to support surgeon's needs for bone void filler cement. Callos, backed by more than 15 years of scientific development, is intended for bony voids and defects in cancellous bone. Callos offers high-compressive strength where host-bone may be comprised.

Callos is indicated to fill bony voids or gaps of the skeletal system (i.e. extremities, spine, and pelvis). These defects may be surgically created osseous defects or osseous defects created from traumatic injury to the bone. Callos is indicated only for bony voids or gaps that are not intrinsic to the stability of the bony structure. The product provides a bone void filler that resorbs and is replaced by bone during the healing process.

Callos products are manufactured by Skeletal Kinetics and exclusively sold by Acumed.

Key Features

  • Handling: Callos sets in 4-6 minutes after implantation in a warm, aqueous environment. Additionally Callos is mixed in a rotary mixer and can be manipulated post-implantation to help refine bone reconstruction.
  • High compressive strength: Callos has been tested to show that it has a compressive strength twice that of cancellous bone (1).


1. Skeletal Kinetics. In vivo rabbit study to support Callos 510(k). 2006.