Abstracts Posters SICOT-SOF meeting Gothenburg 2010 _2_

Poster
Topic: Sports Medicine - Knee
Abstract number: 25244
MEDIAL PATELLOFEMORAL LIGAMENT RECONSTRUCTION FIXED WITH A
CYLINDRICAL BONE PLUG AND A GRAFTED SEMITENDINOSUS TENDON AT
THE ORIGINAL FEMORAL SITE FOR RECURRENT PATELLAR DISLOCATION
KNEES
Masataka DEIE, Mituo OCHI, Nobuo ADACHI, makoto NISHIMORI
Hiroshima University, Hirohsima (JAPAN)
The medial patellofemoral ligament (MPFL) has been recognized as the most
important factor to stabilize the patella. Thus, MPFL reconstruction has become an
accepted surgical technique to restore patellofemoral instability. We recently
developed a new anatomical MPFL reconstruction method using a cylindrical bone
plug and a grafted semitendinosus tendon at the original femoral site to mimic the
native MPFL. This study sought to evaluate our new technique for stabilizing
recurrent patellar dislocation. We evaluated 31 knees from 29 cases of recurrent
patellar dislocation that were surgically treated using our anatomical MPFL
reconstruction. The patient age ranged from 12 to 34 years old (average 22.2 years);
follow-up after surgery was between 2 and 5 years (average 3.2 years). The patients
were clinically evaluated based on the Kujula score, ROM, and signs of
apprehension. We used the Murchant’s view to measure congruence and tilting
angles. Of the 31 knees, 30 showed good clinical results following surgery, while one
patient showed remaining signs of apprehension. The Kujala score increased to
between 79 and 100 points (average 94.5 points) at the final follow-up compared to
between 35 and 70 points (average 64 points) before surgery. ROM improved from 0
degrees to 145 degrees at the final follow-up. No remarkable patellar redislocation
was reported after surgery. Radiological assessment revealed a significant
improvement in both the congruence angle and tilting angle, relative to the normal
ranges.From this study, our anatomical MPFL reconstruction offers a promising
surgical procedure to treat patellar dislocation.
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