The sequelae of distal ulna physeal dyschondroplasia (osteochondrosis) lesions in breeding @entity1707 --a radiological investigation in Danish Landrace XXXX .

@entity75 @entity1707
A radiological follow-up study of @entity75 in the distal ulna was carried out in 58 Danish Landrace breeding sows for a period of 15 months (October 1992 to December 1993). This was part of a major project involving the radiological investigation of articular-epiphyseal and physeal development to investigate @entity75 in @entity1707 . The radiological lesions were graded from 1 to 5 with increasing severity. It was observed that not all @entity1707 passed through all grades. Only 21% of the @entity1707 had no radiological @entity75 (grade 1) during the first radiography series. After 5-7 months, the number of @entity1707 without @entity75 were observed to have increased dramatically (21-69%), but the converse was true for grades 2 (mild), 3 (moderate), 4 (severe) and 5 (very severe): (33-17%), (21-9%), (19-5%) and (7-0%) respectively. This was observed with increasing age and weight. The 3rd radiography series indicated that the percentage of @entity1707 without @entity75 increased up to 82%, and that grades 2, 3, and 4 had fallen to 14%, 2% and 2% respectively, while grade five remained at 0%. This indicated that the distal ulna @entity75 can be important in breeding @entity1707 during the period of growth before first pregnancy. During the first pregnancy the osteochondral ossification fault can be corrected, and the lesions heal. The ulna growth plates were not closed at the second, but mostly closing during the third radiography series.
