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Variations in the Circumflex Branches of the Profunda Femoris Artery - a Cadaveric Study

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Variations in the Circumflex Branches of the Profunda Femoris Artery - a Cadaveric Study Jemds.com Original Research Article Variations in the Circumflex Branches of the Profunda Femoris Artery - A Cadaveric Study Anne George1, Maheswary Thampi Santhakumary2 1, 2 Department of Anatomy, Govt. Medical College Kottayam, Kerala, India. ABSTRACT BACKGROUND The external iliac artery passes behind the inguinal ligament into the front of the thigh Corresponding Author: as the femoral artery (FA). The FA gives off many branches both superficial and deep. Dr. Maheswary Thampi Santhakumary, Anatomy, Govt. Medical College, Kottayam, The profunda femoris artery (PFA) is one of the deep branches given off in the Kerala, India., femoral triangle in front of the thigh. The PFA gives off the medial circumflex femoral E-mail: [email protected] artery (MCFA) and the lateral circumflex femoral arteries (LCFA) and continues downwards giving off the first, second and third perforating arteries. The PFA DOI: 10.14260/jemds/2021/218 terminates as the fourth perforating artery. Many variations in the circumflex branches of the PFA have been found by various authors. These variations are of great How to Cite This Article: significance during procedures done in front part of the thigh. George A, Santhakumary MT. Variations in the circumflex branches of the profunda femoris artery - a cadaveric study. J METHODS Evolution Med Dent Sci 2021;10(14):1020- This is a descriptive cadaveric study. We dissected the thighs of 57 embalmed bodies. 1024, DOI: 10.14260/jemds/2021/218 We looked for the medial (MCFA) and lateral (LCFA) circumflex arteries which are branches of PFA. Each artery was followed till its termination. The distance of their Submission 17-06-2019, origin from the point of the origin of PFA from the FA was measured and noted. The Peer Review 24-01-2021, distance between pubic symphysis and anterior superior iliac spine was measured Acceptance 02-02-2021, Published 05-04-2021. using black silk and measuring scale. The midpoint was marked using skin marking pen and an incision extending from anterior superior iliac spine to pubic symphysis Copyright © 2021 Anne George et al. This is was made. Another incision was made from the above midpoint to the midpoint of a an open access article distributed under horizontal incision at the level of knee joint. Femoral sheath was identified and Creative Commons Attribution License incised. Femoral artery, profunda femoris artery and its circumflex branches were [Attribution 4.0 International (CC BY 4.0)] identified. The modes of origin of MCFA and LCFA were noted. The distance of origin of these from the origin of PFA were measured. Variations in the branching pattern of MCFA and LCFA were looked for and noted down. RESULTS We found that in 83 % of the total cases MCFA took origin from PFA and its origin was from the FA in 13 %. In 84 % of total cases LCFA arose from PFA on the right side and 70 % on the left side. A common stump of origin was noted in 3 cases. CONCLUSIONS Medial and lateral circumflex branches of PFA exhibit wide variations. KEY WORDS Medial Circumflex Femoral Artery, Lateral Circumflex Femoral Artery, Variations in Origin and Branching J Evolution Med Dent Sci / eISSN - 2278-4802, pISSN - 2278-4748 / Vol. 10 / Issue 14 / Apr. 05, 2021 Page 1020 Jemds.com Original Research Article BACKGROUND Many variations of MCFA and LCFA have been noted in various studies like origin of MCFA and LCFA from femoral artery and common stem of PFA and MCFA. Low and high Femoral artery (FA) also known as common femoral artery is origin of the artery from PFA should be kept in mind during the chief deep artery of the thigh which begins behind the procedures in the femoral triangle. Proximity of femoral nerve inguinal ligament at the mid-inguinal point as the continuation to LCFA should be kept in mind during femoral nerve block. In of the external iliac artery. In the front of the thigh in the reconstructive surgery of hip, fixation procedures on the femoral triangle bounded laterally by sartorius and medially upper end of femur and acetabulum, anatomical knowledge of by adductor longus and above by the inguinal ligament, the FA variation of MCFA is very essential as injury to the artery can gives off three superficial and three deep branches. The lead to avascular necrosis. superficial branches are the superficial external pudendal, LCFA arises from the root of PFA leaves the femoral superficial epigastric and superficial circumflex iliac arteries. triangle passing deep to sartorius and to rectus femoris. At this The deep branches are profunda femoris artery (PFA), deep point the internal & external iliac arteries communicate with external pudendal and ascending genicular arteries. The branches of PFA forming an anastomotic ring on the femoral largest branch of the FA is the PFA otherwise known as deep neck with the ascending branch of MCFA. Descending femoral artery. The femoral artery below the origin of PFA is branches passes along anterior boarder of vastus lateralis also known as superficial femoral artery. PFA arises from the supplying it. One long branch anastomosis with the superior lateral side of the FA 3 - 4 cms below the inguinal ligament.1 lateral genicular branch of popliteal artery. Transverse branch The PFA gives off medial circumflex femoral (MCFA), lateral passes laterally anterior to vastus intermedius then pierces circumflex femoral (LCFA), three perforating and muscular vastus lateralis to enter the posterior compartment to arteries and itself continues as the fourth perforating artery.2 participate in the cruciate anastomosis. The MCFA arises from the posterolateral aspect of the PFA LCFA takes part in spinous, trochanteric, cruciate and in the femoral triangle and descends between psoas major and genicular anastomoses.5 Knowledge of the variations is pectineus muscles, passes posteriorly between obturator important in hip joint replacement.6 Branches of LCFA are externus and adductor brevis and enters the gluteal region used for various bypass surgeries.7-9 It is reported that precise between quadratus femoris and the upper border of adductor knowledge of the anatomy of MCFA is essential in performing magnus. Here it gives off the ascending, acetabular and both trochanteric and inter trochanteric osteotomies and is transverse branches. It forms the trochanteric anastomosis also helpful to avoid iatrogenic avascular necrosis of the head with the first perforator, inferior gluteal and transverse of the femur in reconstructive surgery of the hip fixation of branch of LCFA. Ascending branches of LCFA anastomose with acetabular fractures through the posterior approach.10 Both MCFA forming a vascular ring. Retinacular branches from the circumflex arteries arise independently from the femoral vascular ring provide blood to the head and neck of the femur. arteries, the PFA in such cases usually having a low origin, and MCFA is the chief arterial source to the head of femur. The one of the perforating arteries may arise from the circumflex LCFA leaves the femoral triangle by passing deep to the according to a report.11 Most commonly PFA originated from sartorius muscle. It divides into an ascending branch which the posterolateral surface of the common femoral artery and passes along the intertrochanteric line lateral to the hip joint in two cases (10 %) a common trunk was found for PFA and and anastomoses with superior gluteal artery and the deep MCFA.1 circumflex iliac artery at the spinous anastomosis.3,4 According to a report12 in 78.3 % of cases, the MCFA The first three perforating arteries piercing the adductor originated from DFA, in 11.7 % cases from common femoral magnus and the lateral intermuscular septum close to the artery (CFA) and in 5 % cases from superficial femoral artery femur, enter the flexor or the posterior compartment of the (SFA). The incidence of MCFA originating from FA was higher thigh. They communicate with each other by ascending and than that for LCFA.13 According to a report, the ascending descending branches close to the insertion of adductor branch of LCFA was dominant in the vascularisation of tensor magnus. The ascending branch of the first perforating artery fascia lata muscle flap (TFL). This vessel or its terminal participates in the formation of cruciate anastomosis. The branches enter the TFL muscle at various levels between descending branch of the fourth perforator communicates anterior, superior, iliac crest and its insertion into iliotibial with the popliteal artery. In this way a potential arterial chain tract, the most common level being midway between the is formed in the back of the thigh. above two points.14 It was reported that the lateral circumflex Branches of LCFA and MCFA anastomose with branches of femoral artery arose from the femoral artery in 15 % cases superior and inferior gluteal arteries. Descending branch of proximal to the PFA.15 According to one report.16 lateral inferior gluteal artery, first perforating artery and transverse circumflex femoral artery was used as a perforator flap in the branches of MCFA and LCFA form the cruciate anastomosis. reconstruction of gunshot wounds. In a study where 100 lower Cruciate anastomosis is seen at the back of the thigh in the extremities (50 left and 50 right) were dissected, MCFA took interval between quadratus femoris and the upper border of origin from FA in 15 % of cases. (15 cases).17 In a report the adductor magnus. Trochanteric anastomosis is seen on the descending branches of LCFA could be used as high flow greater trochanter of the femur. It is formed by the descending
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