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The inferior medial genicular artery and its vascularization of the pes anserinus superficialis

A cadaveric study

  • Original Article
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Indian Journal of Orthopaedics Aims and scope Submit manuscript

Abstract

Background

A common method for reconstruction of the anterior cruciate ligament (ACL) is it’s replacement by a free avascular graft, using the gracilis and/or semitendinosus tendons. These grafts pass a vulnerable phase in the ligamentization-process during the 1st year after reconstruction. The aims of this study were first to evaluate the vascularization of the pes anserinus superficialis (PAS) by the inferior medial genicular artery (IMGA) and second to develop a pedunculated surgical technique for ACL reconstruction, to preserve a maximal amount of natural vascularization of the tendons inserting at the PAS.

Materials and Methods

First, the vascularization of the PAS was assessed in 12 fresh-frozen lower extremities. The IMGA was identified at its origin at the popliteal artery and perfused with a methylene blue solution. Second, a pedunculated ACL reconstruction was performed in 5 fresh-frozen lower extremities under maintenance of the distal tendon insertion at PAS.

Results

The PAS is a highly vascularized structure. Vessels originate from the IMGA, running along the three tendons of the PAS in the paratendinous tissue. Histologically intratendinous vessels exist; however, perfusion of the inserting tendons through intratendinous vessels was not proven macroscopically. The pedunculated grafts could be positioned and fixed successfully into the bone tunnels in all knees.

Conclusion

Although intratendinous vascularization of the tendons of the PAS via the IMGA was not proven, this study indicates a new possibility of ACL reconstruction. The described operation technique can be conducive to shorten the vulnerable phase of the graft-ligamentization after ACL reconstruction.

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Correspondence to Lena Hirtler.

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Hirtler, L., Ederer, M., Faber, M. et al. The inferior medial genicular artery and its vascularization of the pes anserinus superficialis. IJOO 50, 677–685 (2016). https://doi.org/10.4103/0019-5413.193476

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  • DOI: https://doi.org/10.4103/0019-5413.193476

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