Table 3.
Number and percentage of horses, with specific OC(D) in different joints, obtained from pre-purchase radiographs of 1,231 Dutch Warmblood horses.
| Horses OC(D), (%) n = 1,231 | Horses with OCD | Horses with OC | Total number of horses with OC(D) |
|---|---|---|---|
| Joints | |||
| Tarsocrural (TC) | 167 (13.6%) | 30 (2.4%) | 197 (16%) |
| Bilateral TC | 27 (2.2%) | 53 (4.3%) | 80 (6.5%) |
| Distal intermediate ridge tibia (DIRT) TC | 118 (9.6%) | - | 118 (9.6%) |
| Bilateral DIRT TC | 53 (4.3%) | - | 53 (4.3%) |
| Medial malleolus TC | 11 (0.9%) | - | 11 (0.9%) |
| Medial trochlear ridge TC | 25 (1.9%) | 12(1%) | 37 (2.9%) |
| Lateral trochlear ridge TC | 13 (1.1%) | 18 (1.4%) | 31 (2.5%) |
| Femoropatellar (FP) | 121 (6.8%) | 37 (3%) | 158 (9.8%) |
| Bilateral FP | 10 (0.8%) | 29 (2.4%) | 39 (3.2%) |
| Lateral trochlear ridge of femur FP | 53 (4.3%) | 23 (1.9%) | 76 (6.2%) |
| Patella FP | 38 (3.1%) | 7 (0.6%) | 45 (3.7%) |
| Medial trochlear ridge FP | 27 (2%) | 4 (0.3%) | 31 (2.3%) |
| Trochlear groove FP | 13 (1%) | 3 (0.2%) | 16 (1.2%) |
| Metacarpophalangeal (MCP) | 49(4%) | 26(2.1) | 75(6.1%) |
| Bilateral MCP | 12 (1%) | 12 (1%) | 24 (2%) |
| Dorsal margin P1 MCP | 31 (2.5%) | 15 (1.2%) | 46 (3.7%) |
| Palmar margin P1 MCP | 5 (0.4%) | - | 5 (0.4%) |
| Dorsal sagittal ridge MCP | 13 (1.1%) | 11 (0.9%) | 24 (2%) |
| Metatarsophalangeal (MTP) | 96 (7.9%) | 9 (0.7%) | 105 (8.6%) |
| Bilateral MTP | 88 (7.2%) | 9 (0.7%) | 97 (7.9%) |
| Dorsal margin P1 MTP | 45 (3.7%) | 8 (0.6%) | 53 (4.3%) |
| Plantar margin P1 MTP | 39 (3.2%) | - | 39 (3.2%) |
| Dorsal sagittal ridge MTP | 12 (1%) | 1 (0.1%) | 13 (1.1%) |
| Proximal interphalangeal (PIP) | 5 (0.4%) | - | 5 (0.4%) |
| Distal interphalangeal (DIP) | 16 (1.3%) | - | 16 (1.3%) |
| Bilateral DIP | 5 (0.4%) | - | 5 (0.4%) |
| Total | 443 (36%) | 102 (8.3%) | 545 (44.3%) |