 Greetings everyone my topic for discussion is ultrasound and I'm going to find it's of tennis leg. tennis leg is tennis leg is very common entity of a painful calf region. tennis leg is caused by rupture of middle head of gastronomous muscles usually at its distal muscular tendinous junction or my tendinous junction, however, TMS in this muscle and its tendon are all included in the common term tennis leg. TMS is commonly seen in clinical practice and results in painful calf and the USG and MRI are common modalities to detect the regions of, regions of tear in the calf muscles. The ultrasound findings are most commonly include deception of the pinnet pattern of the distal muscular tendinous junction of gastronomous mostly at the triceps and blue tracking along the fascia MRI findings include typically includes the high T to signal intensity deep to the middle head of gastronomous. TMS leg is fairly common clinical condition for described by Powell in 1883 it is not stick to tennis as its name suggests tennis leg. However, it has higher incidence in tennis players and clinic typical clinical talent is a sports little acute pain in the middle portion of calf associated with snapping sensation. And it is commonly an aversion type of injury and it's a common common cause of painful calf. Most commonly in injury in the injury pattern in the tennis leg is the injury to middle head of gastronomous solacea or plantaris plantaris rupture was once thought to be the most common cause of tennis but on subsequent surgical and autopsy studies it means that the most common legion is the aversion injury of gastronomous particularly the middle head of gastronomous. It's commonly associated with solacea injury injuries to the gastronomous and solacea generally are more severe and require longer time to it's clinically very important definition between the plantaris rupture from the other calf muscle injuries. I'm presenting the index case of a 37 year male refer to our department with the chief complaint of pain in the right calf while doing gym since two days. For car muscle under for car muscles pathologies like tennis leg we have to be very familiar with the anatomy of the calf muscles. There are superficial and deep muscle in the procedure department of leg gastronomous solacea and plantaris compromise the superficial muscle group, while the deep cruel group deep cruel group includes tibialis posterior plexus longus plexus the middle head of gastronomous has its origin from the posterior spectrum middle femoral condyle by the lateral head originates from the lateral femoral condyle. Basically these two has merged together as well. For the Disney it forms actually standard by merging with solacea and its standard origin of solacea is from the back of head of fibula and upper one third of posterior surface of fibula and middle one third of middle border of tibia. The plantaris standard is a vestigial muscle, as we all know, and is visualized between the middle head of gastronomous and solacea. It originates at a position superior and middle to the lateral head of gastronomous muscle and further travels deep to the lateral head of gastronomous. The tendon of plantaris is situated between the middle head of gastronomous and solacea muscle. It has its insertion either intero-medleon aclea or onto the posterior surface of calcaneus. Microscopically talking the most common fibres are the type 2 which are fast switch fibres are found in these curve muscles. The gastronomous plantaris muscles are overstressed in tennis leg when one does dorsiflexion of ankle with knee in full extension. That is the biomechanics. This results in simultaneous active contraction and passive stretching of gastronomous and plantaris causing its injury. On imaging it's very simple thing to know. As we all know the T represents anicoid fluid collection and in this as we all know the US shows partial rupture of middle head of gastronomous. How it will represent? It will represent anicoid fluid collection between the middle head of gastronomous muscle at its muscular tendon junction indicated by local disruption of muscle fibres. Here we can see the fluid is seen tracking between the upper and the middle head of gastronomous. The upper and the middle head of gastronomous and soleus muscle most prominent at the level of muscular tendons junction. On MRI as we all know how T represents, T represents as a high T to cellular intensity fluid area. So focal areas of disruptions are seen. Here we can see a focal area of disruption presenting as a high T to signal intensity of middle head of gastronomous muscle close to its distal muscular tendon junction adjacent to tricep sore. Here we can see the outer one is middle head of gastronomous. This one is soleus and fluid is seen tracking in between them and it's indicating a T here. TANISLAG, it's quite common clinical condition underlying acute painful carp. It is described to rupture of middle head of gastronomous most commonly involved in the middle head of gastronomous only. It typically occurs due to the over stretching muscle by dorsiflexion of ankle with the knee in full extension. This condition tends to frequently occur in middle age. Poorly conditioned patient again is termed as physical activity like a sudden onset of pain in the calf and the patient offered complaints of an audible snap or palpable pop. Most patients coming to the hospital because of this condition has developed significant pain and swelling during the first 24 hours and significantly impairing their daily activity. And late complications can occur like muscle herniation, myocytes, ossificance, contractures, scarring, functional impairment and so on. The amazing motilities are very important to differentiate this entity from other important causes of painful calf like rupture, big curses, d-venus, thrombosis, pyromysitis, obsess or compartment syndrome. As we all know, on USG, it will present an anechoic area of fluid which will be present here between the middle head of gastronomous and so on. On MRE, how Tegel presents high signal intensity, you have to look for high signal intensity and MRE provides a more global view. USG is a cheap investment we all know it's readily available and it's the first degree of first line of investigation. But MRE provides more global view and better view of injuries, especially the muscles apart from gastronomous. So MRE, we have to keep in mind high T2 signal intensity fluid between middle head of gastronomous and soleus muscle and also look for other muscle injuries in the posterior compartment of calf muscle. Thank you very much.