Piriformis Fossa – An Anatomical and Orthopedics Consideration
Introduction: Piriformis fossa is an important anatomical landmark having significant clinical value in orthopedic surgery; but its location and anatomical relationship with surrounding structures are not clearly defined. Hence it is necessary to clearly describe it in respect to anatomical and...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
JCDR Research and Publications Private Limited
2014-03-01
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| Series: | Journal of Clinical and Diagnostic Research |
| Subjects: | |
| Online Access: | https://jcdr.net/articles/PDF/4118/30-%206905_(CE)_(Ra)_F(P)_PF1(PAK)_PFA(H)_PFA2(AK).pdf |
| Summary: | Introduction: Piriformis fossa is an important anatomical
landmark having significant clinical value in orthopedic surgery;
but its location and anatomical relationship with surrounding
structures are not clearly defined. Hence it is necessary to clearly
describe it in respect to anatomical and orthopedic aspect.
Materials and Methods: Fifty Cadaveric dry femoral bones and
Dissection of the four hip specimens were used to study the
Piriformis fossa in respect to location and its relationship with
surrounding structures. Clinical importance of piriformis fossa
was determined in reference to antegrade femoral nail insertion.
Observations: Piriformis muscle and so called piriformis fossa
are unrelated entities. Piriformis fossa is anatomical site of
insertion of obturator externus. In dry cadaveric femora; fossa
was not always located in the direction of femoral shaft. It was
located in the direction of femoral shaft in 24% cases only. In
68% cases femoral canal was aligned lateral and in 8% cases, it
lies medial to the fossa.
Conclusion: Piriformis fossa should be named as Trorchanteric
fossa or Obturator fossa for better anatomical description.
So called Piriformis fossa does not found to be universally
corresponding to femoral shaft hence selection of entry site
should be based on variable proximal femur and area on femur
which corresponds to femoral shaft. |
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| ISSN: | 2249-782X 0973-709X |