internal fixation devices การใช้

• K黱tscher invented what is known as the K黱tscher nail, an internal fixation device used to maintain the position of the fracture fragments during healing.
• Officials from Spine-Tech weren't able to say how much of the spinal load would be carried by the bone and how much by the device, leading some panel members to classify it as " internal fixation device, " a product that doesn't have a good long-term track record.