Review/Oorsig Volume 22, Issue 03 - Page 6

Oorsig/Review Micronutrient imbalances on the other hand, are associated with lax tendons, but in the absence of any other conformational or anatomical abnormalities (figure 7 and figure 8). Figure 5: Arthrogryposis - contracted tendons Figure 6: Arthrogryposis + Block vertebrae Age-appropriate features are external characteristics that are matched to fetal age and can be used to determine if they are appropriate for the actual age of the fetus being examined. If features observed are inappropriate for the actual age of the fetus, this would indicate that some in-utero incident, whether that be infectious or non-infectious, has occurred and this needs to be more thoroughly investigated during your examination to ensure the relevant set of samples are collected. Fetuses less than 6 months gestational age are usually hairless. Between 5 and 7 months color markings appear, and hair growth begins with initial hair growth points being the muzzle, distal limbs and tail. Eyelids separate at around 7 months gestation and at this stage the fetus should be well covered with body hair (figure 9). A fetus where the eyelids have separated yet is largely hairless (figure 10) would indicate an in- utero incident (infectious, nutritional, toxic). Figure 9: Eyelids separated fully haired. Figure 7: Lax tendons fore + hind. Figure 8: Lax tendons hind 6 Figure 10: Eyelids separated fetal alopecia.