. Cunningham's Text-book of anatomy. Anatomy. Usually appears in the 9th month of foetal life. Usually appears before birth At birth. About 12 years Fig. 244. Fuses with shaft about 20-22 years About 16 years. Ossification of the Femur. The Patella. The patella, the largest of the sesamoid bones, overlies the front of the knee- joint in the tendon of the quadriceps extensor. Of compressed form and somewhat triangular shape, its distal angle forms a peak, called the apex patellae, whilst its proximal edge, or base (basis patellae), broad, thick, and sloping forwards and a little distally, is di
. Cunningham's Text-book of anatomy. Anatomy. Usually appears in the 9th month of foetal life. Usually appears before birth At birth. About 12 years Fig. 244. Fuses with shaft about 20-22 years About 16 years. Ossification of the Femur. The Patella. The patella, the largest of the sesamoid bones, overlies the front of the knee- joint in the tendon of the quadriceps extensor. Of compressed form and somewhat triangular shape, its distal angle forms a peak, called the apex patellae, whilst its proximal edge, or base (basis patellae), broad, thick, and sloping forwards and a little distally, is divided into two areas by a transverse line or groove; the anterior area so defined serves for the attachment of the common tendon of the quadriceps extensor muscle, whilst the posterior, of com- pressed triangular shape, is covered by synovial membrane. The medial and lateral borders, of curved outline, receive the insertions of the vastus medialis and lateralis muscles, respectively, the attachment of the vastus medialis being more extensive than that of the vastus lateralis. The anterior surface of the bone, slightly convex in both diameters, has a fibrous appearance, due to its longitudinal striation, and is pierced here and there by the openings of vascular canals. Oftentimes at the superior lateral angle there is a well-defined area for the tendinous insertion of the vastus lateralis. The posterior or articular surface is divided into two unequal parts (of which the lateral is the wider) by a vertical elevation which glides in the furrow of the trochlear surface of the femur, and in extreme flexion passes to occupy the intercondyloid fossa. The lateral of the two femoral surfaces is slightly concave in both its diameters; the medial, though slightly concave proximo - distally, is. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly rese
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1914
