Abstracts Posters SICOT-SOF meeting Gothenburg 2010 _2_

Poster
Topic: Sports Medicine - Knee
Abstract number: 23632
THE ANATOMY OF PES ANSERINUS FOR ULTRASONOGRAPHY.
Nobuyuki WATANABE, Hirotaka IGUCHI, Masaaki KOBAYASHI, Isato SEKIYA,
Yuko NAGAYA, Hideyuki GOTO, Masahiko NOZAKI, Hideyuki OKAMOTO, Satona
MURAKAMI, Takanobu OTSUKA
Dept. of Arthroplastic medicine, Nagoya City University Graduate school of Medicine,
Nagoya (JAPAN)
Background: Pes anserinus tenoditis/bursitis (PATB) is an overuse syndrome
occurred to not only athletes but also patients with knee osteoarthritis. Although the
benefits of Ultrasonography (US) with PATB have been discussed, they are still
controversial. Some paper described US was not fit to give a diagnosis, however
other paper reported the usefulness of US for pathology of PATB. US method for
PATB detailed to bony landmark, probe angle etc. has not been established yet. The
purpose of this study is to investigate the clinical morphology that useful to US for
PATB. Materials and Methods: Eight formalin-fixed, lower leg cadaver specimens
were studied. All knee joints were fixed with full extension. 1) The angle between
semitendenious tendon and tibial axis, 2) the angle between medial collateral
ligament (MCL) and tibial axis, 3) the widths of groove, 4) the thickness of pes
anserinus on the groove and 5) the thickness of MCL on the groove were
investigated. Results: The average angle between semitendenious tendon and tibial
axis was 68.4 degrees. And the angle between MCL and tibial axis averaged 28.8
degrees. Whereas small groove was found as a bony landmark at the point of
intersection between MCL and pes anserinus in each case. The mean longitudinal
length was 19.3mm and the mean width was 9.8mm, respectively. Discussion and
Conclusion; The results of this study suggested that the probe should be placed
around 40 degrees to tibial axis in case of ultrasonography with PATB.
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