. The Anatomical record 1922-1923. Anatomy. ANOMALOUS PATELLAE 271 The explanation which I have to offer for the emargination to the patella .... is that in addition to the central deposit of cartilage cells in the quadriceps extensor tendon which forms the patella, we not infrequently get an outhnng deposit in the anterior fibers of the ilio- tibial hand of fascia lata; that this deposit when it occurs is usually small; that it joins the central deposit, its presence being indicated by the process which gives to the patella its occasional emarginated appearance.'. Fig. 2 Articular surface of
. The Anatomical record 1922-1923. Anatomy. ANOMALOUS PATELLAE 271 The explanation which I have to offer for the emargination to the patella .... is that in addition to the central deposit of cartilage cells in the quadriceps extensor tendon which forms the patella, we not infrequently get an outhnng deposit in the anterior fibers of the ilio- tibial hand of fascia lata; that this deposit when it occurs is usually small; that it joins the central deposit, its presence being indicated by the process which gives to the patella its occasional emarginated appearance.'. Fig. 2 Articular surface of a patella from Santa Catalina Island, California (no. 609). a, accessory patella ('patellula'); 6, furrow caused by the coalescence of the patella and 'patellula'; c and d, upper and lower clefts of incomplete coalescence; e, insertion line of m. vastus lateralis, continuous with c; f g, spine-like projections at lower ends of patellular and patellar notches. That this assertion is exactly to the point in certain cases is demonstrated by a left patella in our collections from Santa CataUna Island, California (no. 609), which may be seen illus- trated in figure 2. The bone shows on its upper lateral side an unevenly lozenge-shaped accessory 'patellula' (a), whose articular surface is set off against the articular surface of the patella proper by a distinct, but otherwise smooth and fairly deep furrow (b). The two elements are incompletely coalesced above and below, leaving in these two places distinct and relatively deep clefts (c and d). The anterior patellular surface, somewhat circular, is sUghtly bulged and rugged in continuation with the patellar sur- ' Pearson and Davis, in a comprehensive comparative study on the sesamoids of the knee-joint, assert that "in the knee-joint itself we have come across no less that ten sesamoids . . ." ('21, p. 134), which are fittingly named by them in accord with the older Please note that these images are extr
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectanatomy, bookyear1906
