Radial Head Plate. Home > Resources > Images > Radial Head Plate. Acumed Radial Head Plating System – On Bone T: ; E: [email protected] Acumed’s Locking Radial Head Plate System provides an innovative and improved method for the treatment of fractures where the radial head. The Acumed Anatomic Radial Head System is designed to provide an 2 Mini and Micro instruments and the Locking Radial Head Plate System at the base of .
|Published (Last):||15 April 2008|
|PDF File Size:||11.9 Mb|
|ePub File Size:||13.63 Mb|
|Price:||Free* [*Free Regsitration Required]|
A year-old man right elbow; clinical result 5 years after olecranon fracture and coronoid fracture fixed with screw and radial head replacement A, Extension; B, Flexion; C, Supination; D, Pronation.
After determining the correct size head and stem, insert the implant into the radius using the impactor and a mallet. Six patients had an associated elbow ligament injury and three patients had an associated coronoid fracture. In a direct radius-to-capitellum axial loading experiment, an anatomically designed radial head prosthesis had lower and more evenly distributed contact acumer than the nonanatomic implants that were tested. J Hand Surg Am.
Paired t test was used to acimed between the affected and unaffected elbows in each patient. There are no major complications such as infection or pain at an average of Stress shielding never extended to the bicipital tuberosity, and there were no cases of impending mechanical failure. The Acutrak 2 Mini and Micro Headless Compression Screw instrumentation is also found at the bottom of each olate head replacement system tray, expanding the treatment options for the surgeon.
Stress shielding around radial head prostheses. Product Overview The Acumed Radial Head Plating System provides an innovative method for the treatment of fractures when the radial head is salvageable. Results Anatomical radial head prototype 2 had similar radiocapitellar contact areas and mean pressures as the native radial head; all other designs showed significant decreases in contact area and increased mean pressures.
The effect of prosthetic radial head geometry on the distribution and magnitude of radiocapitellar joint contact pressures.
Radial Head Plate | Acumed
There was no dislocation of the radial prosthetic head. Click Here to Request More Information. The prosthesis that best mimicked native contact behavior was the anatomical radial plats prototype 2 [ARH Solutions] owing to its design for articulating with the capitellum, the lateral trochlear ridge, and the sulcus between. A year-old man, right elbow; radiographic result 5 years after olecranon fracture and coronoid fracture fixed with screw and radial head replacement A, Anteroposterior view; B, Lateral view.
Four long stems range from 50 mm to 65 mm in length 5 mm increments and 6 mm to 12 mm in diameter 2 mm increments. The standardized elbow radiograph were taken and used to detect the ossification and osteoarthritic change, the prosthesis stability and change of the distal radio-ulnar joint.
The medial defined ulna articular zone is angled and smooth to improve contact with the radial plats. The coronoid fracture and the olecranon fracture were fixed with screw Figure 2. The dish depth increases with head diameter, which is designed to help improve radiocapitellar wear characteristics over the current-generation Acumed Anatomic Radial Head.
Combinations head and stem combinations.
Compared with other studies of a similar size, our clinical results with all excellent results at medium-term follow-up is better than other studies [ 12 – 18 ]. Click Here to Request More Information. Journal Abstract Hypothesis Our aim was to test whether anatomically designed metallic radial head implants could better reproduce native radiocapitellar contact pressure and areas than nonanatomic implants.
J Bone Joint Surg Am. The lateral and medial ulnohumeral space, proximal radial migration was recorded. The unaffected elbow side in each patient was selected as a control group. The Radial Head Plating System may be combined with any of the Acumed anatomic radial head replacement systems and may be found at the bottom of the tray. Radiographic measurement revealed that average lateral ulnohumeral space on the affected side was 2. Radius Retractor – Designed to help elevate the radius, this tool may assist during reaming, trialing, and insertion of the implant.
Between January and December12 patients six men and six women Table 1 with radial head comminuted fractures were treated by radial head replacement of the Acumed anatomic radial head prosthesis system. The operations were performed by two surgeons Yan Xiong and Ziming Wang in our department within ten days of injury.
These choices provide the surgeon with multiple implant options and accommodate the individual differences in natural anatomic head and neck shape. The joint capsule and annular ligament were sutured without special ligament reconstruction.
The system provides a comprehensive solution for radial head replacement. The system offers a straightforward solution when the radial head is salvageable.
All patients treated by the Acumed anatomic radial head system achieved our follow up at a mean follow-up of Plare in conjunction with Shawn W. The dish depth increases with head diameter, which is designed to help improve radiocapitellar wear characteristics over the previous generation Anatomic Radial Head. This is pplate from other stem that causes high contact pressure on the opposing articular cartilage or bone cement [ 9 ].
New Anatomic Design Features Contouring of the medial side of the head has been further defined to track against the lateral side of the ulna.
None of the elbows had symptoms or signs of instability at the final evaluation. The First and Only Anatomic Radial Head Originally released inthe prosthesis has been used in thousands of radial head procedures over multiple system generations and product line improvements.
Sorry, we’re doing some work on the site
Lister’s tubercle may also be used as a landmark for laser mark plafe. Journal Abstract Objective To determine if radiocapitellar contact pressures would be elevated with nonanatomical circular prostheses over those mimicking native anatomy and if such pressures would be related to the depth and contour of the articular dish and to the pattern wcumed prosthetic articulation against the lateral trochlear ridge.
These were significantly greater with symmetrical circular heav than with asymmetrical elliptical designs. The average proximal radial migration on the affected side was 0.
Long Stems For very distal fractures or revision cases, the long stems range from 6—12 mm in diameter in 2 mm incrementsand have 50 radail mm length options in 5 mm increments. For very distal fractures or revision cases, the long stems range from 6—12 mm in diameter in 2 mm incrementsand have 50 mm—65 mm length options in 5 mm increments.
Influence of radial head prosthesis design on radiocapitellar joint contact mechanics. Journal Abstract Objective Stress shielding is known to occur around rigidly fixed implants. Many radial head designs have been used currently, but little studies showed that one design is better than another.