3 Main Arteries Extraosseous and intraosseous anastomoses formed by 3 main arteries: Posterior tibial artery ~ 17% contribution Anterior tibial (dorsalis pedis) artery ~ 36% contribution Perforating peroneal artery ~ 47% contribution Major Branches Tarsal sinus artery: Arises from – Dorsalis pedis artery (frequently) or Lateral tarsal artery (branch of…
Category: PGMEE, MRCS, USMLE, MBBS, MD/MS
Medical knowledge in bullet points with understandable language, simplified images and graspable mnemonics.
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Ankle block : Nerves and Landmarks
Mnemonic: The 3 nerves starting with letter “S” are sensory only and supply superior and side aspect of foot (dorsum). 1. Superficial peroneal nerve (L4-S1): located lateral to Extensor Digitorum Longus (EDL) Supplies: dorsum of foot and toes except between the great and 2nd toe 2. Sural nerve (S1-S2): It…
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Blumensaat line
Synonym: Intercondylar line, Blumensaat’s line Definition of Blumnesaat line It is the tangent drawn along the roof of intercondylar notch or fossa of the distal femur on the saggital or lateral view. Morphologic variations of Blumensaat line (Iriuchishima’s classification) Straight type (35%): appear more or less straight Small hill type…
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Carpal bones – Mnemonic
There are certain well-known sentences used as a mnemonic to remember the names and arrangement of the 8 carpal bones in 2 rows. She Looks Too Pretty, Try To Catch Her Some Lovers Try Positions That They Cannot Handle So using this mnemonic, we will learn the arrangement of the…
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Blood supply of femoral head
Three sources of Blood supply Vascular arragement of Proximal Femur a. Extracapsular ring (At the base of femoral neck) These circumflex femoral arteries branch from: Trochanteric anastomosis (centered on trochanteric fossa): Descending branch of SGA + ascending branch of LFCA, MFCA and IGA Cruciate anastomosis (centered on lesser trochanter): Descending…
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Lasers in Ophthalmology – Mnemonic
Order of decreasing wavelength Mnemonic: CHyNa PuRE The laser tissue interaction can be remembered in the reverse order using the mnemonic ACiDiTy. Carbon dioxide (CO2): 10600 (photoThermal) Holmium YAG: 2100 (photoDisruption) Nd:YAG: 1064 (photoDisruption) Pulsed dye laser: 585-600 (photoChemical) aRgon green: 514 (photoChemical) Excimer: 193 (photoAblation) Indications of Laser aRgon…
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Definitions, Criteria and Classifications in Osteomyelitis
Morrey and Peterson’s Definition of Osteomyelitis Definite osteomyelitis: Positive bone or adjacent soft tissue culture or histologic evidence Probable osteomyelitis: Positive blood culture + Clinical & radiological evidence of osteomyelitis Likely osteomyelitis: Typical clinical and radiographic features of osteomyelitis responding to antibiotic therapy (in absence of positive culture) Peltola and…
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Column Concept of Acetabulum
2 Column Concept or Principle of Acetabulum (Letournel and Judet) According to this concept, “C” shaped acetabular structure is contained between the limbs of lamda [λ] or inverted “y”. The longer limb represents anterior column and the shorter limb represents the posterior column. The anterior and posterior walls are extensions…