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Biomedical subjects

R H Patterson

Publications and source records attributed to R H Patterson.

At least 91 records · Page 5Linked to original sources
PubMedDate not supplied

Repair of supracondylar femur fracture and unilateral knee replacement at the same surgery.

In patients who are candidates for a total knee arthroplasty and suffer a periarticular fracture of the femur, the arthroplasty may be performed after bony union of the fracture or immediately, in conjunction with the fracture repair. Herein we present the case of a sixty-year-old female with rheumatoid arthritis and a supracondylar fracture of the right femur in whom total knee arthroplasty and retrograde nail insertion were addressed at one surgery; the outcome was favorable. The transverse extraarticular fracture pattern in this patient was advantageous for simultaneous procedures; had the fracture been more comminuted or intraarticular, it might not have been possible to perform both procedures at the same time.

Accidental Falls↗
PubMedDate not supplied

Biomechanical stability of four cranial cruciate ligament repair techniques in the dog.

Four commonly used cranial cruciate ligament (CCL) repair techniques were compared biomechanically in canine cadaver stifles by assessment of immediate postoperative laxity (cranial drawer) and stiffness. Each joint was tested nondestructively before repair, with the CCL intact and with the CCL excised. The cranio-caudal laxity after each repair was expressed as a percentage of the laxity in the same stifle after CCL excision. The stiffness of a repair was expressed as a percentage of the same intact joint's stiffness at an equivalent displacement. Repaired stifles were tested three consecutive times to the same maximum load (180 N) and the comparative laxity and stiffness in each test were determined. Fibular head transposition resulted in significantly increased stiffness, less laxity, and less decay per test than the other repairs. Lateral imbrication resulted in significantly less laxity on all tests, and significantly greater stiffness than the fascial strip or patellar tendon on the second and third tests to maximum load. The fascial strip resulted in significantly less laxity on all tests than the patellar tendon, but it was not significantly greater in stiffness. These data suggest that, of the reconstructive methods tested, fibular head transposition has biomechanically superior properties in the immediate postoperative period.

Animals↗