Definition: Abnormal scapular motion which may refer to – Causes: 1. Primary: Due to abnormalities arising in Scapulo-thoracic articulation, periscapular muscles and nerves 2. Secondary: Response to shoulder abnormalities Types: It is categorized into three main types based on the prominence of specific areas of the scapula during movement. Clinical…
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 
Kambin’s Triangle or Prism
There is confusion regarding the borders of Kambin’s triangle across the literature. Kambin originally described the borders of this triangular working zone as: Though it was named as a “triangle” it was described with 4 borders with 2 triangles (in AP view and Lateral view) which gives a 3D structure…
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Spinal Tumors Localization : Mnemonics
Intradural Intramedullary Spinal Tumors Mnemonic: I HEAL Intradural Extramedullary Spinal Tumors Mnemonic: MNM Extradural Spinal Tumors Lesions outside the thecal sac are categorized as extradural lesions. Remember that everything that isn’t in the thecal sac is extradural, including discs, bones, nerves, and blood vessels.
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Ulnar styloid impaction syndrome
Definition: Impaction of triquetrum against the ulnar styloid causing chondromalacia, synovitis and ulnar-sided wrist pain Pathology: Etiology: Clinical features: 1. Asymptomatic 2. Ulnar-sided wrist pain, aggravated by wrist extension and specific positioning (having hands on hip or back pockets) 3. Potential history of trauma to distal radius or ulna, surgery…
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Trauma Scoring Systems
Scoring systems Score type Brief description Score interpretation Revised trauma score (RTS) Physiologic RR + SBP + GCS Each parameter is scored 0-4 (Total range = 0-12) Lower score indicates more severe injury (RTS 12 = <1% mortality; RTS 0 = >99% mortality) Score <11 – transfer to trauma center…
PGMEE, MRCS, USMLE, MBBS, MD/MS 
McCormack Load Sharing Classification (LSC)
McCormack classification aims to predict the need for anterior stabilization in addition to posterior fixation in cases of thoracolumbar burst fractures. It considers 3 factors for scoring: Principle: Application of load-sharing principle of long bone fixation (load sharing between implant system and host bone) to surgical treatment of acute thoracic…
PGMEE, MRCS, USMLE, MBBS, MD/MS 
TLICS vs SLICS
Thoracolumbar Injury Classification and Severity (TLICS) and Subaxial Cervical Spine Injury Classification System (SLICS) are based on 3 components of injury: TLICS score and SLICS score provide a scoring system to guide management: Characteristics TLICS SLIC 1. Injury morphology (Radiographs, CT) a. No abnormality 0 0 b. Compression 1 1…
PGMEE, MRCS, USMLE, MBBS, MD/MS 
Rheumatoid Thumb – Nalebuff Classification
Type Description Treatment 1 Boutonniere (most common) Synovectomy with extensor hood reconstruction; MCP fusion or arthroplasty 2 Boutonniere with CMC subluxation (uncommon; Type 1 + Type 3) Same as type 1 and type 3 3 Swan neck deformity (2nd most common) Splinting vs CMC arthroplasty; MCP fusion 4 Gamekeeper deformity…