Upper sacral segment dysplasia refers to a sacral phenotype in which the size and orientation of the upper sacral segment doesn’t allow safe passage of a trans-iliac, trans-sacral screw and characterized by one or more of the following features/criteria:1 Criteria Projection Frequency Acute alar slope (qualitative criteria without cut-off value)…
Author: Dr. Sulabh Kumar Shrestha, MS Orthopedics
He is the section editor of Orthopedics in Epomedicine. He searches for and share simpler ways to make complicated medical topics simple. He also loves writing poetry, listening and playing music. He is currently pursuing Fellowship in Hip, Pelvi-acetabulum and Arthroplasty at B&B Hospital.
Fellowship Blog
Simultaneous Bilateral Total Knee Arthroplasty (SBTKA): A Practical Perspective
Recently, we operated on a 58-year-old female patient with advanced bilateral knee osteoarthritis (OA). She underwent simultaneous bilateral total knee arthroplasty (TKA) using a medial parapatellar approach. Both femoral components were size 3, tibial components size 3, and a 10mm polyethylene insert was used on each side. Some practical considerations…
Fellowship Blog
Pediatric Pelvic Fracture Classifications
Before closure of triradiate cartilage (14 in boys and 12 in girls), pelvic bones are weaker than pelvic ligaments leading to more pubic rami and iliac wing fractures. After closure, they are more likely to sustain fractures of acetabulum, diastasis of pubic symphysis and SI joint separation. Hence, a pediatric…
Fellowship Blog
Retrograde Percutaneous Screw Fixation of Posterior Column Acetabulum Fracture : C-Arm Views & Technique
Today in the OR, I observed a retrograde percutaneous screw fixation of a left posterior column acetabular fracture in a 63-year-old male. While I wasn’t scrubbed in, it offered a fantastic opportunity to understand the precision and fluoroscopic guidance required for this minimally invasive approach. It is often said that, “Percutaneous fixation is a surgery performed…
Fellowship Blog
Drill Bit Breakage During Proximal Interlocking Screw Insertion in IMIL Nailing – A Practical Lesson from the OR
In orthopedic trauma surgery, complications often come unexpectedly which must be dealt critically. even routine procedures can throw a surprise. We came across one such unexpected complication while operating on a case of 23-year-old male with bilateral closed shaft of femur fracture with antegrade intramedullary interlocking (IMIL) nail on left…
Fellowship Blog
Revision Surgery After Failed Open Reduction in Developmental Dysplasia of the Hip
Re-dislocation rate after primary open reduction: 0-14% [1] Causes and timing of failure of primary surgery: Postoperative period Causes Immediate Approach related, Technical errors Delayed (After 4-6 weeks) Inadequate capsulorrhaphy, Inadequate immobilization Late Abnormal remodeling of acetabulum and femur Across multiple studies, inadequate soft tissue release – specifically the psoas…
PGMEE, MRCS, USMLE, MBBS, MD/MS
Bone Cement : Basic Science
COMPOSITION Powder Liquid Polymer: PMMA Monomer: MMA Initiator: BPO Accelerator: NN-DMPT (Dimethyl paratoluidine; encourage polymer and monomer to polymerize at room temperature) Radiopacifier: BaSO4/ZrO2 Stabilizer: Hydroquinone (prevent premature polymerization) Antibiotics: Gentamicin +/- Cross-linking agent (improves mechanical strength): e.g., ethylene glycol dimethacrylate (EGDMA) POLYMERIZATION MECHANISM Free radical polymerization: Initiator in powder…
Fellowship Blog
Mathematical Principles in Mechanically Aligned Total Knee Arthroplasty
Mechanical Axis Concept Natural Knee Target alignment in MA-TKA Tibial cut Distal femoral cut Posterior femoral cut The 3° Compensation Rule Distal femoral and Tibial resection thickness = Implant thickness 2 mm rule in TKA References: