TL;DR: In this article, a dual injection technique using different radiocontrast media was applied to delineate arteries and lymphatic vessels on radiographs, and the relationship between the arteries and vessels was investigated.
Abstract: Summary Background Vascularized lymph node transfer (VLNT) has shown promise as a treatment for breast cancer–related lymphedema, a common and debilitating condition among breast cancer survivors. In VLNT, the most popular lymph node flap donor site is the inguinal region; however, concerns about the possibility of iatrogenic lymphedema hamper the widespread adoption of VLNT. A better understanding of the anatomy of the lymphatic system in the inguinal region is essential to preserving lymph drainage in the leg and avoiding iatrogenic lymphedema. Methods Five human cadaver hind-quarter specimens were used for this study. First, the specimens were scanned with indocyanine green fluorescence lymphography to map the lymphatic vessels. A dual injection technique using different radiocontrast media was then applied to delineate arteries and lymphatic vessels on radiographs. Finally, radiological analysis and meticulous dissection were used to investigate relationships between the arteries and lymphatic vessels. Results By chasing the lymphatic vessels retrogradely from their corresponding lymph nodes, we were able to divide the superficial inguinal lymph nodes into three subgroups: the abdominal, medial thigh, and lateral thigh nodes. We found no connections between the superficial and deep lymphatic system in the inguinal region. The dominant lymph nodes draining the leg were in the lower part of the inguinal triangle, and their efferent lymphatic vessels ran medial to the common femoral artery. Conclusions Preserving the sentinel nodes of the lower leg in the medial thigh and their efferent lymphatic vessels is crucial to avoid iatrogenic lymphedema in limbs with donor sites for VLNT.
TL;DR: Preserving the sentinel nodes of the lower leg in the medial thigh and their efferent lymphatic vessels is crucial to avoid iatrogenic lymphedema in limbs with donor sites for VLNT.
Abstract: Summary Background: Vascularized lymph node transfer (VLNT) has shown promise as a treatment for breast cancererelated lymphedema, a common and debilitating condition among breast cancer survivors. In VLNT, the most popular lymph node flap donor site is the inguinal region; however, concerns about the possibility of iatrogenic lymphedema hamper the widespread adoption of VLNT. A better understanding of the anatomy of the lymphatic system in the inguinal region is essential to preserving lymph drainage in the leg and avoiding iatrogenic lymphedema. Methods: Five human cadaver hind-quarter specimens were used for this study. First, the specimens were scanned with indocyanine green fluorescence lymphography to map the lymphatic vessels. A dual injection technique using different radiocontrast media was then applied to delineate arteries and lymphatic vessels on radiographs. Finally, radiological analysis and meticulous dissection were used to investigate relationships between the arteries and lymphatic vessels. Results: By chasing the lymphatic vessels retrogradely from their corresponding lymph nodes, we were able to divide the superficial inguinal lymph nodes into three subgroups: the abdominal, medial thigh, and lateral thigh nodes. We found no connections between the superficial and deep lymphatic system in the inguinal region. The dominant lymph nodes draining the leg were in the lower part of the inguinal triangle, and their efferent lymphatic vessels ran medial to the common femoral artery.
TL;DR: The anatomical basis for the use of this skin flap was determined and it was used to repair defects following resection of ulcers and scar tissue on the head, neck and extremities (Itoh & Arai, 1993).
Abstract: Mathes & Bostwick (1977) surgically manipulated the rectus abdominis myocutaneous flap to repair defects in the anterior abdominal wall. Subsequently this flap was used in breast reconstruction (Robbins, 1981; Hartrampf et al. 1982) as a donor for free-tissue transfer (Bunkis et al. 1983) and to repair defects in the groin (Logan & Mathes, 1984; Ramasastry et al. 1989). Disadvantages of this flap are that it can be too thick to use effectively and a direct abdominal hernia may occur through the inguinal triangle (Mathes & Bostwick, 1977; Pennington & Pelly, 1980; Ramasastry et al. 1989; Itoh & Arai, 1993). To overcome these disadvantages the rectus abdominis and the fascia covering the inguinal triangle must be intact. Surgeons therefore harvested the inferior epigastric skin flap for free-tissue skin transfer; this flap contained little or no rectus abdominis muscle or transversalis fascia (Koshima & Soeda, 1989). Previous investigators determined the anatomical basis for the use of this skin flap and used it to repair defects following resection of ulcers and scar tissue on the head, neck and extremities (Itoh & Arai, 1993).
TL;DR: Utilitarian aspects of hernia pathogenicity are envisaged to assist comprehension of surgical gestures, the choice of effective techniques and the abandon of those which are not and may be of medicolegal interest.
Abstract: Utilitarian aspects of hernia pathogenicity are envisaged to assist comprehension of surgical gestures, the choice of effective techniques and the abandon of those which are not and may be of medicolegal interest: all inguinal hernias are due to parietal weakness. Anatomical factors are studied based on data from dissection, from in front backwards and then from behind forwards, from which certain major notions are drawn: that of role of transverse fascia in imperviousness to intra-abdominal pressure; that of uniqueness of inguinal hernias, all of which cross the transverse fascia in the region of the regional osteomuscular framework; that of the necessary degradation of musculofascial plane for a hernia to develop, with as a corollary the need for inguinal imperviousness at the transverse fascia level to be restored. Factors may be present that increase the "natural weakness" of the groin: anatomical variations affecting inguinal triangle; biological disorders affecting inguinal structures (aponeurotic and fascial senescence, collagen diseases, musculo-tendino-aponeurotic dystrophy). A breakdown in mechanisms of protection against increased intra-abdominal pressure promoted a summary of features defining intra-abdominal pressure under physiologic conditions and classical herniogenic circumstances. A summary of pathogenic mechanisms of inguinal hernia is presented while emphasizing the two principal theories: the saccular theory and that of musculo-fascial weakness, with their consequences for choice of therapies to be opposed to the polymorphism of hernial lesions.
TL;DR: Measurements of the inguinal region, in particular of theInguinal triangle (Hesselbach) were statistically compared with 14 different anthropometric parameters in 73 white human male corpses, generally being null to three decimal places.
Abstract: Several reports suggest a definite relationship between inguinal hernia and pelvic measurements. In order to assess this opinion, measurements of the inguinal region, in particular of the inguinal triangle (Hesselbach) were statistically compared with 14 different anthropometric parameters in 73 white human male corpses. The correlation tests between the inguinal and anthropometric parameters showed very lower values, generally being null to three decimal places. The importance and possible etiologic role of these findings are discussed.