Patellofemoral Update
Patellofemoral Update
March 07, 2019
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Double-bundle reconstruction of MPFL seen as effective treatment for patellar instability

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Investigators of a recently published study found long-term clinical results of double-bundle reconstruction of the medial patellofemoral ligament showed the procedure was effective for the treatment of chronic patellar instability.

Researchers identified 68 patients with chronic patellar instability who underwent double-bundle reconstruction of the medial patellofemoral ligament with the semitendinosus tendon from May 2005 to February 2010. During follow-up, investigators assessed the Tegner activity scale score, Kujala score and Lysholm knee score. An objective physical examination was also performed. Median follow-up was 8 years. After 2 years postoperatively, there were eight patients lost to follow-up.

Results showed the mean Tegner score increased preoperatively to 6 months postoperatively from 2.85 to 4.91. At 2 years postoperatively, the mean Tegner score had increased to 7.26. At the last follow-up, it increased to 7.82. All patients had achieved “pain-free at rest” at the last follow-up; however, eight patients had knee pain in activities of daily living.

The preoperative mean Kujala score was approximately 58. At 6 months, 2 years and the last follow-up, it increased to about 61, 90 and 89, respectively. The preoperative Lysholm score was approximately 44, which increased to 58 at 6 months postoperatively. The Lysholm score also increased to about 89 at 2 years postoperatively. At the last follow-up, the score was about 90. Preoperatively and at 6 months, 2 years and at the last follow-up, the range of motion was about 121°, 129°, 131° and 131°, respectively. – by Monica Jaramillo

Disclosures: The researchers report no relevant financial disclosures.