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The Patella
The Patella is the largest
sesamoid bone in the body
PatellaPatella
A sesamoid bone is a
bone that is embedded in
the tend...
PatellaPatella
The Patella lies in the
tendon of the
Quadriceps muscle
QuadricepsQuadriceps
PatellarPatellar
TendonTendon
...
The Patella has a
wide upper border
Wide upperWide upper
borderborder
The lower border is pointed and
is called the Patellar Apex
Patellar ApexPatellar Apex
T...
The ventral surface is
convex and ridged
Ventral surfaceVentral surface
The posterior surface has articular
facets that articulate with the
Distal Femur
The Posterior Surface
The Posterior Surface
The upper 2/3rds is smooth
and covered in
hyaline cartilage
The Posterior Surface
The upper 2/3rds is smooth
and covered in
hyaline cartilage
It engages with the
Medial and Lateral
F...
Patella
Quadriceps Muscle
Patellar Tendon
The patella engages with the
Medial and Lateral
Femoral Condyles
The Posterior Surface
There is a prominent
vertical ridge that
divides the
posterior articular
surface into medial and
lat...
The Posterior Surface
The Lateral Facet is larger
and gently concave
The Posterior Surface
The Lateral Facet is larger
and gently concave
Medial Facet
The Posterior Surface
The inferior aspect of the
posterior surface is
roughened due, partly, to
the attachment of the
pate...
Patellar Stability
upwards andupwards and
outwardsoutwards
The Patella is embedded in the
Tendon of the Quadriceps
upwards andupwards and
outwardsoutwards
On contraction, the Quadri...
upwards andupwards and
outwardsoutwards
This is counteracted by the action of
Vastus Medialis which pulls the Patella inwa...
The Lateral Femoral Condyle
projects further forward than the
Medial Femoral Condyle and this
provides a bony obstacle to
...
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Slideshow: Patella

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Slideshow: Patella
The Funky Professor videos can be viewed here;
http://publishing.rcseng.ac.uk/journal/video?videoTaxonomy=FUNK

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Slideshow: Patella

  1. 1. The Patella
  2. 2. The Patella is the largest sesamoid bone in the body PatellaPatella A sesamoid bone is a bone that is embedded in the tendon of a muscle Anterior view, right
  3. 3. PatellaPatella The Patella lies in the tendon of the Quadriceps muscle QuadricepsQuadriceps PatellarPatellar TendonTendon Anterior view, right
  4. 4. The Patella has a wide upper border
  5. 5. Wide upperWide upper borderborder The lower border is pointed and is called the Patellar Apex Patellar ApexPatellar Apex The Patella has a wide upper border
  6. 6. The ventral surface is convex and ridged Ventral surfaceVentral surface
  7. 7. The posterior surface has articular facets that articulate with the Distal Femur
  8. 8. The Posterior Surface
  9. 9. The Posterior Surface The upper 2/3rds is smooth and covered in hyaline cartilage
  10. 10. The Posterior Surface The upper 2/3rds is smooth and covered in hyaline cartilage It engages with the Medial and Lateral Femoral Condyles
  11. 11. Patella Quadriceps Muscle Patellar Tendon The patella engages with the Medial and Lateral Femoral Condyles
  12. 12. The Posterior Surface There is a prominent vertical ridge that divides the posterior articular surface into medial and lateral facets
  13. 13. The Posterior Surface The Lateral Facet is larger and gently concave
  14. 14. The Posterior Surface The Lateral Facet is larger and gently concave Medial Facet
  15. 15. The Posterior Surface The inferior aspect of the posterior surface is roughened due, partly, to the attachment of the patellar tendon Medial Facet
  16. 16. Patellar Stability upwards andupwards and outwardsoutwards
  17. 17. The Patella is embedded in the Tendon of the Quadriceps upwards andupwards and outwardsoutwards On contraction, the Quadriceps pulls the Patella upwards and outwards
  18. 18. upwards andupwards and outwardsoutwards This is counteracted by the action of Vastus Medialis which pulls the Patella inwards On contraction, the Quadriceps pulls the Patella upwards and outwards The Patella is embedded in the Tendon of the Quadriceps
  19. 19. The Lateral Femoral Condyle projects further forward than the Medial Femoral Condyle and this provides a bony obstacle to lateral movement of the Patella Lateral FemoralLateral Femoral CondyleCondyle
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Slideshow: Patella The Funky Professor videos can be viewed here; http://publishing.rcseng.ac.uk/journal/video?videoTaxonomy=FUNK

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