Medical Apparatus: Imaging Guide to Orthopedic Devices
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Gallery of Orthopedic Medical Devices

Introduction

Neck & Spine Gallery

Fracture Fixation Gallery

Joint Arthroplasty Gallery 

 

Complications of Orthopedic Apparatus

Gallery References

 

 

Gallery of Orthopedic Medical Device - Joint Arthroplasty continued


By Tim B. Hunter, MD and Mihra S. Taljanovic, MD, PhD

 

Gallery of Joint Arthroplasty Devices - Pelvis & Hip

Unipolar hip hemiarthroplasties (endoprostheses) Unipolar hip hemiarthroplasty (endoprosthesis) with a cemented femoral component Modular non-cemented unipolar hip hemiarthroplasty (endoprosthesis) Left hip unipolar prosthesis non-cemented
Endoprostheses Unipolar hip prosthesis Modular endoprosthesis Left hip endoprosthesis
These are single piece prostheses which press fit into the native acetabulum and the native femur. From Hunter, 1994 Note the collar abutting the femoral calcar. From Taljanovic, 2005 Note the collar abutting the femoral calcar. 74 year-old woman treated for left femoral neck fracture. There is a medial collar abutting the femoral calcar.
Bipolar hemiarthroplasty (prosthesis) Bipolar hemiarthroplasty (prosthesis) Bipolar hemiarthroplasty  
Bipolar prosthesis Bipolar hemiarthroplasty Left hip bipolar hemiarthroplasty Bipolar left hip hemiarthroplasty
A free riding acetabular cup is press fit into the native acetabulum.  The acetabular cup articulates with a prosthetic femoral head and stem component. From Hunter, 1994 From Hunter, 1994 92 year-old woman treated for left femoral neck fracture  
Bipolar hemiarthroplasty with claw plate and cables   Bilateral total hip arthroplasty; right hip arthroplasty dislocation Total hip arthroplasty with cerclage wires
Bipolar hemiarthrplasty with claw plate and cables Bipolar hemiarthroplasty with claw plate and cables Bilateral hip arthroplasty; right hip arthroplasty dislocation Right hip total arthroplasty with cerclage wires
78 year-old woman with prior bipolar hemiarthroplasty; presently treated with claw plate and cables for periprosthetic intertrochanteric fracture.   Elderly woman with bilateral press fit total hip arthroplasties. There is a dislocation on the right.  
Bipolar hip prosthesis with cable plate (cables passed through the plate) Modular non-cemented total hip prosthesis (THA) Modular non-cemented total hip prosthesis (THA) Hip prosthesis femoral components
Bipolar hip prosthesis Modular non-cemented hip prosthesis Modular non-cemented hip prosthesis Femoral components of hip prostheses
The cable plate and wires stabilize a periprosthetic femoral shaft fracture. Implants consist of a proximally porous coated stem and prosthetic head and a porous coated metal acetabular component with a polyethylene liner. From Hunter, 1994 There is a variation in the head diameter. Two components on the right have ceramic heads. From Hunter, 1994
Dislocated total hip arthroplasty Total hip arthroplasty with porous coated stem Revision total hip prosthesis Malleable penile prosthesis and bipolar hip hemiarthroplasty
Dislocated hip arthroplasty Total hip arthroplasty Total hip arthroplasty Malleable penile prosthesis and bipolar hip prosthesis
Most hip arthroplasty dislocations are posterior. From Hunter, 1994 The cerclage wires were placed because a femoral shaft fracture (not visible herein) occurred during the prosthesis placement. There is subcutaneous gas from recent placement of the prosthesis. From Taljanovic, 2005 The revision prosthesis was placed because of an earlier periprosthetic fracture. There are two cable wires proximally and two cerclage wires distally. From Taljanovic, 2005  
Triflange acetabular component total hip revision arthroplasty with long femoral stem Triflange acetabular component total hip revision arthroplasty Metal-on-metal right hip total arthroplasty  
Triflange acetabular revision hip arthroplasty Triflange left hip revision arthroplasty Metal-on-metal right hip implant Metal-on-metal hip implant
  83 year-old woman 67 year-old woman  
Femoral head resurfacing prosthesis DePuy PROSTALAC total hip replacement Lower limb salvage prosthesis (limb-salvage total knee arthroplasty)
Femoral head resurfacing Prostalac hip replacement Lower limb salvage prosthesis Lower limb salvage prosthesis
  53 year-old man whose previously infected right hip prosthesis was replaced with the PROSTALAC prosthesis having antibiotic laden components. This is a custom made prosthesis for a patient who was treated for a Ewing sarcoma.  From Taljanovic, 2005
Antibiotic laden cement (ABLC) temporary prosthesis Hip antibiotic laden cement (ABLC) acetabular spacer Metal-on-metal right hip total arthroplasty
Antibiotic laden temporary prosthesis Hip antibiotic laden acetabular spacer Right hip meta-on-metal arthroplasty Right hip metal-on-metal arthroplasty
From Taljanovic, 2005 From Taljanovic, 2005 55 year-old woman
Metal-on-metal right hip total arthroplasty   Right hip dislocation with displaced polyethylene liner
Right hip metal-on-metal THA Right hip dislocation with dislocated liner Right hip dislocation with liner displacement Right hip dislocation with liner displacement
29 year-old woman with bilateral hip dysplasia and placement of right metal-on-metal hip arthroplasty for advanced degenerative arthritis from the hip dysplasia. There is postoperative gas evident as well as a surgical drain. Initial AP radiograph (left) shows a right hip dislocation. Note the polyethylene liner (arrow) is still associated with dislocated femoral head. The hip was subsequently relocated. The AP radiograph (middle) show subtle eccentric positioning of the reduced femoral head within the acetabular cup. A subtle density (arrows) represents the liner which is now disassociated from the femoral head. This is somewhat more clearly shown (arrow) on the frog leg lateral view (right).

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Gallery of Arthroplasty Devices continued...

 

 


Author contact information

Tim Hunter
Email: hunter@radiology.arizona.edu


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