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 Devices - Fracture Fixation continued


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

 

Upper extremity fracture fixation

The anatomy of a fixation screw Cancellous and cortical bone screws Drawing of fracture fixation plates Fixation plates
Screw anatomy Drawing of fracture fixation plates Fixation plates
From Hunter, 1994 From Hunter, 1994 From Hunter, 1994 A - one third tubular plate; B - dynamic compression plate (DCP); C- T-plate; D - reconstruction plates. From Hunter, 1994
K-wires AP view K-wires lateral view Herbert screw Herbert screws
K-wires in distal radius K-wire in distal radius Herbert screw herbert screws
50 year-old woman with a distal radius immobilized by 4 Kirschner wires (K-wires). There is also an ulnar styloid fracture. Note the different screw pitch on each end. Also known as headless (recessed) fixation screws. From Taljanovic, 2005
Herbert screw Acutrak screw Steinman pins Rush pin (ulna) and dynamic compression plate (radius)
Herbert screw in a scaphoid fracture Acutrak screw in a scaphoid fracture Steinman pins Rush pin and dynamic compression plate
There is a healing scaphoid fracture, and a fiberglass cast is in place. From Hunter, 1994 The Acutrak screw stabilizes a scaphoid fracture. From Taljanovic, 2005  
Shoulder capsule anchor fixation screws Spider plate Variable angle volar distal radius locking plate
Anchor screws Spider plate Volar distal radius locking plate Volar distal radius locking plate
  The scaphoid has been removed. The spider plate transfixes the lunate, triquetrum, capitate, and hamate which are partially fused. From Taljanovic, 2005 20 year-old woman with surgical plate placement for a malunited distal radius fracture. From Taljanovic, 2005
Wrist T-plate (AP view) Wrist T-plate (lateral view) Acutrak screws and endobuttons
Wrist t-plate Wrist t-plate Acutrak screws and Endobuttons Acutrak screws and Endobuttons
This is also commonly called a "volar" fixation plate. From Taljanovic, 2005 64 year-old woman with thumb "tightrope" surgery using Endobuttons and Acutrak screws. The trapezium has been resected.
Acutrak screws Little finger reconstruction plate Interference (Kurosaka) screw

Accutrak screws Accutrak screws Little finger reconstruction plate

Kurosaka screw

The Accutrak screws are used for arthrodesis of the distal interphalangeal joints of the right index and long fingers in a woman with severe osteoarthritis. 47 year-old man with fracture of the left little finger proximal phalanx. Interference (Kurosaka) screws are used to anchor anterior cruciate ligament graft in femoral and tibial metaphysis. Note the multiple osteochondromas (familial exostosis). From Hunter, 1994
Suture anchors (anchor screws) in humeral head Low contact dynamic compression plate used for wrist arthrodesis Short reconstruction plate and Kirschner wire
Suture anchors in humeral head Wrist arthrodesis with low contact dynamic compression plate Wrist arthrodesis with low contact dynamic compression plate Reconstruction plate and Kirschner wire
Multiple suture anchors are present in the left shoulder humeral head for tacking down the joint capsule in a patient with recurrent shoulder dislocation. From Taljanovic, 2005 The arrow points to bone graft at osteotomy site.
Locking dynamic compression plate (LCD) and screws transfix a healed distal radius shaft fracture Enders (flexible) fixation nails Flexible fixation rods
Locking dynamic compression plate Locking dynamic compression plate Enders nails Fllexible fixation rods
There is also a volar periarticular fixed angle plate and screws with a proximal locking screw that transfixes a new healing distal radial diametaphyseal fracture. From Taljanovic, 2005 From Taljanovic, 2005 Flexible intramedullary fixation rods stabilize a healing humerus shaft fracture. The wire in the eyelets distally (arrow) prevent the rods from backing out of the insertion portal. From Hunter, 1994
Tension band wiring Clavicular hooked plate Clavicle reconstruction plate Carbon fiber humerus fixation plate
Tension band wire oleceranon fracture Clavicular hooked plate Clavicle reconstruction plate Carbon fiber humerus fixation plate
Tension band fixation of an olecranon fracture using a cancellous screw. The looped wire transforms the distractive pull of the triceps into compression at the fracture site. From Hunter, 1994     The carbon fiber fixation plate itself is radiolucent but has a wire encased in it to allow radiographic evaluation of its placement. In the proximal end of the plate are 3.5 mm proximal humeral head fixed angle threaded locking holes with 3.5 mm locking screws.

Image courtesy Brandon Runyan, MD.

Bilateral proximal humerus periarticular locking plates Carbon fiber radius volar fixation plate
Right humerus periarticular locking plate Left humerus periarticular locking plate Carbon fiber radius volar fixation plate Carbon fiber radius volar fixation plate
57 year-old man with comminuted bilateral proximal humerus fractures. Skin staples are present. There are old, healed rib fractures on the left. The carbon fiber fixation plate itself is radiolucent but has a wire encased in it to allow radiographic evaluation of its placement.

Image courtesy Brandon Runyan, MD.

Periarticular locking plate Humerus periarticular locking plate with Vitoss bone substitute Multiple humeral head suture anchors  
Periarticular locking plate Humerus periarticular locking plate with bone substitute Suture anchors Suture anchors
    60 year-old woman with repair of a massive rotator cuff tear. Three suture anchors are present. There are old, healed left rib fractures.

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Gallery of Fracture Fixation continued...

 


Author contact information

Tim Hunter
Email: hunter@radiology.arizona.edu


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