Whitton R C, Rose R J
Animal Health Trust, Newmarket, Suffolk, England.
Aust Vet J. 1997 Oct;75(10):746-50. doi: 10.1111/j.1751-0813.1997.tb12260.x.
To determine the frequency of damage to the medial palmar intercarpal ligament (MPICL), and the range of sizes of the dorsomedial intercarpal ligament (DMICL) of the midcarpal joint in horses with no history of carpal joint disease.
Cadaver limbs were collected from 72 horses with no history of carpal joint disease. One hundred and forty-two midcarpal joints were dissected and the MPICL and DMICL were examined. Measurements were made with a digital micrometer.
MPICL tearing was present in 88 of 96 joints from horses 2 years and older. Tears were predominantly of the dorsolateral bundle and complete rupture of the dorsolateral and dorsomedial bundles was not observed. Tearing was not present in foals less than 4 months of age and the severity of tearing increased significantly with age (P < 0.0001). Severity of tearing was significantly greater in racing Standardbreds than racing Thoroughbreds (P < 0.01), but there was no significant difference between racing and non-racing horses. The lateromedial thickness of the DMICL ranged from 0.4 mm to 2.6 mm in horses 2 years and older. Lateromedial thickness increased significantly with age, and was significantly greater in racing Standardbreds than racing Thoroughbreds (P < 0.01). There was no significant difference between racing and nonracing horses.
Damage confined to the dorsolateral bundle of the MPICL is a common finding in horses over 1 year of age and is probably of little clinical significance. Complete rupture of both dorsolateral and dorsomedial bundles is uncommon in horses with no history of midcarpal joint disease. Variation in size of the DMICL is observed in horses of all ages, but is most marked in 2-year-old horses.
确定无腕关节疾病病史马匹的腕中关节内侧掌侧腕间韧带（MPICL）损伤频率以及背内侧腕间韧带（DMICL）的尺寸范围。
收集72匹无腕关节疾病病史马匹的尸体肢体。解剖142个腕中关节并检查MPICL和DMICL。使用数字千分尺进行测量。
2岁及以上马匹的96个关节中有88个存在MPICL撕裂。撕裂主要发生在背外侧束，未观察到背外侧束和背内侧束完全断裂。4个月龄以下的幼驹未出现撕裂，且撕裂严重程度随年龄显著增加（P < 0.0001）。标准赛马的撕裂严重程度显著高于纯种赛马（P < 0.01），但参赛马和非参赛马之间无显著差异。2岁及以上马匹的DMICL内外侧厚度范围为0.4毫米至2.6毫米。内外侧厚度随年龄显著增加，标准赛马的厚度显著大于纯种赛马（P < 0.01）。参赛马和非参赛马之间无显著差异。
局限于MPICL背外侧束的损伤在1岁以上马匹中常见，可能临床意义不大。在无腕中关节疾病病史的马匹中，背外侧束和背内侧束完全断裂不常见。各年龄段马匹均观察到DMICL大小存在差异，但在2岁马匹中最为明显。
