Medial patellar retinaculum
Updates to Article Attributes
The medial patellar retinaculum is a fibrous expansion comprising of superficial and deep layers.
Gross anatomy
The superficial layer originates from the lowest fibres of the vastus medialis muscle, sartorius and the medial collateral ligament. The deep layer has contributions from the medial patellofemoral ligament and fascial thickenings.
It inserts onto the medial aspect of the patellar ligament, patella and quadriceps tendon. From this insertion, it extends posteromedially to blend with the medial margin of the knee capsule and inferior surface of the medial tibial condyle.
It is an important stabiliser of the patella, through this firm medial tibial condyle attachment and resists lateral patellar dislocation 1,2,3.
Pathology
The medial patellar retinaculum is often partially or completely torn in lateral patellar dislocation 4. It is more commonly injured than the lateral patellar retinaculum.
See also
-<p>The <strong>medial patellar retinaculum</strong> is a fibrous expansion comprising of superficial and deep layers.</p><h4>Gross anatomy</h4><p>The superficial layer originates from the lowest fibres of the <a href="/articles/vastus-medialis-muscle">vastus medialis muscle</a>, <a href="/articles/sartorius-muscle">sartorius</a> and the <a href="/articles/medial-collateral-ligament-of-the-knee">medial collateral ligament</a>. The deep layer has contributions from the<a href="/articles/medial-patellofemoral-ligament"> medial patellofemoral ligament</a> and fascial thickenings. </p><p>It inserts onto the medial aspect of the <a href="/articles/patellar-tendon">patellar ligament</a>, <a href="/articles/patella">patella</a> and <a href="/articles/quadriceps-tendon">quadriceps tendon</a>. From this insertion, it extends posteromedially to blend with the medial margin of the <a href="/articles/knee-capsule">knee capsule</a> and inferior surface of the medial tibial condyle.</p><p>It is an important stabiliser of the <a href="/articles/patella">patella</a>, through this firm medial tibial condyle attachment and resists <a href="/articles/lateral-patellar-dislocation">lateral patellar dislocation</a> <sup>1,2,3</sup>.</p><h4>See also</h4><ul><li><a title="Lateral patellar retinaculum" href="/articles/lateral-patellar-retinaculum">lateral patellar retinaculum</a></li></ul>- +<p>The <strong>medial patellar retinaculum</strong> is a fibrous expansion comprising of superficial and deep layers.</p><h4>Gross anatomy</h4><p>The superficial layer originates from the lowest fibres of the <a href="/articles/vastus-medialis-muscle">vastus medialis muscle</a>, <a href="/articles/sartorius-muscle">sartorius</a> and the <a href="/articles/medial-collateral-ligament-of-the-knee">medial collateral ligament</a>. The deep layer has contributions from the<a href="/articles/medial-patellofemoral-ligament"> medial patellofemoral ligament</a> and fascial thickenings. </p><p>It inserts onto the medial aspect of the <a href="/articles/patellar-tendon">patellar ligament</a>, <a href="/articles/patella">patella</a> and <a href="/articles/quadriceps-tendon">quadriceps tendon</a>. From this insertion, it extends posteromedially to blend with the medial margin of the <a href="/articles/knee-capsule">knee capsule</a> and inferior surface of the medial tibial condyle.</p><p>It is an important stabiliser of the <a href="/articles/patella">patella</a>, through this firm medial tibial condyle attachment and resists <a href="/articles/lateral-patellar-dislocation">lateral patellar dislocation</a> <sup>1,2,3</sup>. </p><h4>Pathology</h4><p>The medial patellar retinaculum is often partially or completely torn in lateral patellar dislocation <sup>4</sup>. It is more commonly injured than the lateral patellar retinaculum. </p><h4>See also</h4><ul><li><p><a href="/articles/lateral-patellar-retinaculum" title="Lateral patellar retinaculum">lateral patellar retinaculum</a></p></li></ul>
References changed:
- 4. Starok M, Lenchik L, Trudell D, Resnick D. Normal patellar retinaculum: MR and sonographic imaging with cadaveric correlation. AJR Am J Roentgenol. 1997 Jun;168(6):1493-9. doi: 10.2214/ajr.168.6.9168713. PMID: 9168713.
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