hello everyone welcome to another anatomy video this is dr ayan from the veterinary anatomy channel today we will talk about the medial muscles of the thigh in the dog so let's get started the median muscles of the thigh in the dog include the sartorius muscle the gracilis muscle the bacterial muscle and finally the doctor muscle okay so now we will move and talk about the medial muscles of the thigh let's move the following like this here so that we can have overview about the medial surface of the hind limb as you can see here so in this case the medial muscles include the gracilis muscle the sartorius muscle the bacterial muscle and the doctor magnus muscle so let's start with the first one it's a broad muscle located on the medial surface of the hind limb just under the skin called the gracilis muscle if you look exactly you will find that the gracilis muscle originates from the symphysis pelvis or pelvic synthesis here and inserts down to the medial tibial crest here this area and this area here so to the medial tbl crest to the tibia on the medial surface here and at the same time a tendon from this muscle moves toward the tupper calcane or calcaneal tuberosity again the gracilis muscle it's a broad muscle found immediately originated from the belvix and fissures here and cells to the medial service medial proximal service of the tibia and at the same time in cells also to the tuber calcane or the calcaneal tuberosity so here we can see also the belvic synthesis which is the origin the pelvics and physics here which is the origin of the glass cellulose muscle the origin of the grass in this muscle while the insertion of the gracilis muscle as we described before is the medial medial tibia medial tibia this area here and at the same time it inserts also to the tupper calcaneal or the calcaneal tuberosity this muscle is innervated by the obturator nerve in this case let me show you the object obturator nerve what you have to do is just to dissect this muscle and move it to the side just under the gracilis muscle here we can see the ultra return nerve i hope it's clear for you this is the obturator nerve the obturator nerve moves uh inside the bed through the obturator freeman and exit the belvix uh cavity um to be there just you know under the gracilis muscle and innervate also the glacialist muscle they hope it's clear this is here the object return there for the innervation of the gracilis muscle the gracilis muscle is um if you consider the origin and insertion of this muscle is responsible for the extension for the extension of the hip joint extension of the hip joint at the same time it's a flicks or look at the direction of the tendon so it's a flexor of the stifle joint so contraction of this muscle will flex the stifle joint and at the same time it rotates the forward immediately rotates the hind limbs or immediately rotate behind immediately this is the restless muscle the next muscle which we can see here is let's jump directly to this muscle located cranio drain immediately here it's the sartorius muscle the sartorius muscle in the dog as you can see has two parts it has two parts this is the cranial part of the sartorius muscle and this is the caudal part of the sartorius muscle again look exactly this is the sartorius muscle the sartorius muscle originates there from the aliac crest from the iliac crest and in cells to the medial tibial crest and to the facial the stifle joint here in this area here this is the sartorius muscle cranial part of the sartorius muscle and carotid part of the sartorius muscle these two parts of the sartorius muscles are innervated by the saphenous nerve safinos that nerve which we can see moving just next to this artery this is the femoral artery so here we can see the saphenous nerve which gives branches for the innervation of the sartorius muscle the saphenous nerve is a branch of the femoral nerve the function of the sartorious muscle is a elixir from the origin insertion look exactly here so contraction of this muscle will flex the hip joint flicks the hip joint and at the same time it will also extend extend the the stifle joint it will extend so contraction of this muscle will extend the stifle joint let me show you now the origin of this muscle if you look at this here we can see as we said you know the origin of the sartorius muscle in this area of the uh of the ilium so the iliac crest the iliac crest this area here okay now the next muscle we are going to talk about in this view here is the victimian muscle so this is the bacterial muscle in this case we just need you know of course it was like this before so we can see just a small part of the bacterial muscle this muscle can be also palpated in live animals so if we dissect the gracilis muscle move it counterlink the sartorius muscle move it cranially in this case we can easily dissect and find the bactineos muscle bectinius muscle or bacterial muscle originate from the iliopic imminence and inserts to the distal medial surface of the fimobo let me show you the bone again so if we put the billboards like this like this exactly like this so you will find that the bactenial muscle originates from this point here which is the iliopic eminence the idiopubic imminence so we have of course one here one there idiopubic eminence and the inserts of course to the medial distal surface of the femur bone medial distal service of the femur bone okay so contraction of this muscle of course will cause somehow like a i mean lev the elevation of the hindsim at the same time rotation of this hind limb or addiction addiction adduction of the hindrance toward the body so in some publication they say that you know contraction of this muscle will may cause in some um dog breeds like um like a pressure between the femoral head and the acetabulum so the femoral head and the acetabulum let me show you something here so normally uh if we put the the female bone inside the acetabulum like this so and consider the origin and the insertion of this muscle from the iliopubic eminence up to the medial distal surface of the femur bone in this case uh contraction of this muscle while walking will make like a little bit pressure between the femur head and the distal part of the acetabulum causing in some dog bleeds like a micro fracture fractures of the acetabulum in this area which will be absorbed later and finally in some brits again it could cause like a absorption of this part of the acetabulum and at the end acetabulum will look like a flat allowing the female head to laxate out of the acetabulum something like this um okay so i just want to to talk about this you know because we are talking about the bacterium muscle next or counter to the bacterius muscle this is the big tenous muscle next to the bacterius muscle so here we forgot to tell to to say that the victinious muscle is also innervated by a branches from the up to reactor nerve branches of the obturator nerve which we can see here this is the obturator now okay counter to the bacterial muscle bactineos muscle here we have the dr magnus the doctor magnus muscle it's a muscle located directly on the counter surface of the bone of the femur bone or genit from the ventral surface of the ischium and inserts to the linea spira medially on the femur bone in this area here this muscle is responsible from the name a doctor magnus a doctor magnus is responsible for the addiction of the hind limb toward the midline toward the body and this muscle is inhalated by the obturator nerve as you can see here the alternating nerve is located directly on this muscle that doctor magnus okay so for that dr magnus again if we put the bone like this you will find that the doctor magnus originate from the ventral surface of the ischium the spawn of the pelvis and inserts immediately distally on the femur bone here here in the lateral view i would like also to show you that under the biceps femoris here if we dissect it and move it to the side here we can see the dr magnus muscle this is that dr magnus muscle it's a huge muscle and starts as we described previously on the crowded surface of the female bone so this is the female bone and if i would like to show you the bone here so that dr magnus in this case and sails through the color service here of this pawn a doctor magnus again in this group we talked about the gracilis muscle the sartorius muscle with screening and crowded parts just in the dog we talked about the pectineus muscle and finally about the dr magnus muscle [Music] sweetie [Music]