and joint failure – though this is not common.
A careful preoperative evaluation of the patient prior to revision surgery is critical for success. The physical examination should consider the condition of the skin, location of previous incisions, range of motion, joint stability, muscle function and strength, as well as the location and function of the ulnar nerve. The possibility of infection should always be considered and investigated with baseline laboratory studies including white cell count, sedimentation rate and C reactive protein. Joint aspiration for cell count and cultures should probably be considered in every patient and is mandatory if there is a high suspicion of infection or the parameters mentioned above are elevated. Preoperative radiographs should also be analyzed carefully to evaluate the fixation of the components and the severity of bone loss.
Find The Best Knee Replacement Implant - Verywell
Schneeberger .  published the results of a study of 41 patients with posttraumatic osteoarthritis using the Coonrad-Morrey prosthesis. The mean age of the patients at the time of surgery was 57 years (range, 32 to 82 years) and the mean follow-up time was five years. Seventy-three per cent of the patients had no or mild pain and the results were considered satisfactory in 83 per cent of the cases. However, there was a 27 per cent complication rate, including five ulnar component fractures and two revisions for polyethylene wear. These authors concluded that elbow arthroplasty should be relatively contraindicated in patients planning to perform substantial physical activities with the involved upper extremity or are not able to comply with the previously mentioned postoperative restrictions.
Currently published data seem to favour the use of linked semiconstrained implants. Little .  recently published a systematic review of the literature on elbow arthroplasty. The overall revision rate has been similar for linked and unlinked implants (11 13 per cent). However, radiographic loosening seems to be higher with unlinked implants (especially the humeral component of the Souter prosthesis). The functional results are similar with the exception of elbow extension, which seems to be better with linked implants. On a separate study, Levy reported a higher rate of revision for unlinked compared to linked implants .
Guide to Knee Replacement Implants and Their ..
In this kind of arthroplasty the components are not mechanically linked. Maintenance of prosthesis congruency depends on the adequate position of each component, ligamentous integrity, and the dynamic stabilizing effect of the musculature. Most of these implants provide a more or less anatomic resurfacing of the distal humerus and proximal ulna; some incorporate a radial head component. The most popular unlinked implants are the Souter-Strathclyde and the Kudo prostheses (Fig. ). Other unlinked implants are listed in Table .
cementless hip prosthesis / for total hip arthroplasty ..
The clinical outcome and long-term survivorship differs from implant to implant, and the results obtained with a given linked or unlinked implant cannot be extrapolated to other members of the same implant family. However, there are a few advantages and disadvantages of each of these two design philosophies (Table ).
Total hip replacement is the most common procedure
Several studies have documented the outcome of elbow arthroplasty in rheumatoid arthritis using both linked and unlinked implants. Gill and Morrey  published the results obtained in 78 consecutive rheumatoid elbows using the Coonrad-Morrey design. At most recent follow-up, 97 per cent of the patients had no or mild pain and the mean arc of motion was from 28 degrees of extension to 131 degrees of flexion. The main complications of this series included deep infection (2 cases), aseptic loosening (2 cases), triceps avulsion (3 cases), periprosthetic fractures (2 cases), and ulnar component fracture (1 case). Survivorship free of revision was 92.4% at ten years (Fig. ). Gschwend .  published the results using the GSB III prosthesis in 65 elbows, 32 of which were rheumatoid, followed for a minimum of 10 years. Overall clinical results were satisfactory and the main complications included infection (6 per cent), loosening (4.6 per cent) and component disengagement (13.6 per cent).
The Radiology Assistant : Hip - Arthroplasty
We report a case of complete occlusion of the common femoral artery following total hip arthroplasty due to acute thrombus formation.
A 56 year old Indian male patient was admitted for post-traumatic avascular necrosis of the head of the femur leading to degenerative arthritis of his left hip joint (Fig.1).