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Key Facts: Iraqi Board Orthopedic Surgery Exam

IBMS / MOHESR

Governing Body & Ministry

Iraqi Board for Medical Specializations

5 Years

Residency Training Duration

IBMS Orthopedic Curriculum

Not published

Published Pass Mark

Scientific Council of Fracture and Orthopedic Surgery curriculum

100 MCQs

Practice Bank Study Items

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The Iraqi Board of Orthopedic Surgery (IBMS/MOHESR) credential entails a 5-year structured surgical residency evaluated by the Part 1 Primary Written Exam (end of Year 1; two MCQ papers in applied basic sciences and surgical sciences), Mid-Term Exam (end of Year 3; MCQ/essay and clinical OSPE/cases), and Final Certifying Examination (end of Year 5; written MCQ/essay papers, clinical OSPE, long cases, thesis defense, and oral viva before four subspecialty committees). Pass standards require a 60% minimum per paper and a 70% composite average. This independent 100-question practice bank provides targeted preparation for the theoretical written components of Part 1 and Part 2; it is not an operative simulation or a substitute for accredited clinical residency training.

Sample Iraqi Board Orthopedic Surgery Practice Questions

Try these sample questions to review concepts for the Iraqi Board Orthopedic Surgery exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1According to Perren's interfragmentary strain theory, which condition is required for primary (direct) cortical bone healing to occur across a fracture site?
A.Interfragmentary strain less than 2% with absolute anatomical rigidity and compression
B.Interfragmentary strain between 2% and 10% with bridging callus formation
C.Interfragmentary strain between 10% and 30% facilitating endochondral chondrogenesis
D.Interfragmentary strain greater than 30% promoting fibrous tissue differentiation
Explanation: Primary (direct) cortical bone healing occurs under conditions of absolute stability, where anatomical reduction and interfragmentary compression reduce tissue strain to less than 2%. Under this minimal strain environment, osteoclasts create longitudinal cutting cones (haversian remodeling) directly bridging the fracture gap without intermediate cartilaginous callus formation. Strains between 2% and 10% stimulate secondary bone healing with periosteal and endochondral callus.
2A 68-year-old postmenopausal woman with severe osteoporosis is evaluated before elective spine fusion. Denosumab therapy is reviewed. What is the precise cellular molecular target of denosumab in bone remodeling?
A.Inhibition of cathepsin K inside the osteoclast ruffled border
B.Monoclonal antibody binding to receptor activator of nuclear factor-κB ligand (RANKL)
C.Stimulation of osteoprotegerin (OPG) synthesis by bone marrow adipocytes
D.Inhibition of farnesyl pyrophosphate (FPP) synthase in the mevalonate pathway
Explanation: Denosumab is a fully human monoclonal antibody that binds with high affinity to RANKL (receptor activator of nuclear factor-κB ligand). By binding to RANKL, it prevents RANKL from activating its receptor RANK on osteoclast precursors, thereby halting osteoclast differentiation, function, and survival. Bisphosphonates inhibit farnesyl pyrophosphate synthase, whereas odanacatib was designed to inhibit cathepsin K.
3Which of the following orthopedic implant biomaterials has an elastic (Young's) modulus closest to that of human cortical bone (~18 GPa)?
A.Cobalt-chromium-molybdenum alloy (~210 GPa)
B.316L stainless steel (~200 GPa)
C.Titanium-aluminum-vanadium alloy (Ti-6Al-4V) (~110 GPa)
D.Polyetheretherketone (PEEK) (~3.5 to 4 GPa)
Explanation: Among traditional metallic biomaterials, titanium alloys (such as Ti-6Al-4V) have an elastic modulus of approximately 105–115 GPa, which is roughly half that of stainless steel (~200 GPa) and cobalt-chromium (~210–240 GPa), making it the closest among metals to cortical bone (~18 GPa). This lower modulus reduces stress shielding in intramedullary nails and uncemented femoral stems. Unreinforced PEEK has a modulus of 3.5–4 GPa (closer to cancellous bone), while carbon-fiber reinforced PEEK can reach ~18 GPa.
4In the microstructural zonal organization of adult articular cartilage, which zone is characterized by the highest concentration of proteoglycans and collagen fibers arranged perpendicular to the joint surface?
A.Superficial (tangential) zone
B.Transitional (middle) zone
C.Deep (radial) zone
D.Calcified cartilage zone
Explanation: The deep (radial) zone contains the highest concentration of proteoglycans (aggrecan) and lowest water content, with thick type II collagen fibers oriented perpendicular to the articular surface to resist compressive loads. In contrast, the superficial tangential zone contains collagen fibers packed densely parallel to the joint surface to resist shear forces, with the lowest proteoglycan content and highest water content. The tidemark separates the deep zone from the calcified cartilage zone.
5A trauma patient requires bone grafting for a diaphyseal bone defect. Which bone graft material provides osteogenic, osteoinductive, AND osteoconductive properties simultaneously?
A.Fresh autologous cancellous bone graft
B.Demineralized bone matrix (DBM)
C.Recombinant human bone morphogenetic protein-2 (rhBMP-2)
D.Porous tricalcium phosphate ceramic granules
Explanation: Fresh autologous cancellous bone graft is the clinical gold standard because it possesses all three essential bone healing properties: osteogenesis (viable osteoblasts and progenitor cells), osteoinduction (endogenous growth factors such as BMPs and TGF-beta), and osteoconduction (trabecular 3D scaffold). Demineralized bone matrix and rhBMP-2 are osteoinductive and minimally osteoconductive but lack living cells (not osteogenic). Synthetic ceramics are purely osteoconductive.
6Which geometric parameter of an orthopedic cortical bone screw has the greatest mechanical influence on its pullout strength in diaphysial bone?
A.Screw pitch
B.Core (minor) diameter
C.Outer (major / thread) diameter
D.Screw run-out angle
Explanation: The pullout strength of a cortical screw is directly proportional to its outer (major or thread) diameter squared and the thread depth (outer diameter minus core diameter). Clinically, increasing the outer diameter expands the volume of bone engaged between threads far more effectively than modifying pitch or minor diameter. The core diameter primarily determines the screw's torsional strength and shear resistance.
7During total joint arthroplasty, polymethylmethacrylate (PMMA) bone cement undergoes an exothermic polymerization reaction. Which phase of cement handling is characterized by the highest risk of bone-cement interface micromotion if implants are manipulated?
A.Mixing phase
B.Waiting (sticky) phase
C.Working (dough) phase
D.Setting (polymerization/curing) phase
Explanation: During the setting (curing) phase, the polymerization reaction accelerates exothermically, rapidly transforming the cement from a pliable dough into a rigid glass polymer. Any movement or manipulation of the prosthesis during this critical phase fractures developing polymer chains, weakens mechanical interlock with cancellous bone, induces premature interfacial gaps, and severely increases long-term aseptic loosening risk. Implants must be held completely immobile until curing is complete.
8In the anterior (Smith-Petersen) surgical approach to the hip, what is the correct superficial internervous and intermuscular plane?
A.Between tensor fasciae latae (superior gluteal nerve) and sartorius (femoral nerve)
B.Between tensor fasciae latae (superior gluteal nerve) and rectus femoris (femoral nerve)
C.Between gluteus medius (superior gluteal nerve) and vastus lateralis (femoral nerve)
D.Between sartorius (femoral nerve) and gracilis (obturator nerve)
Explanation: The anterior approach to the hip joint (Smith-Petersen approach) exploits a true internervous and intermuscular plane superficially between the tensor fasciae latae (innervated by the superior gluteal nerve) laterally and the sartorius (innervated by the femoral nerve) medially. Deeply, the dissection continues between the gluteus medius (superior gluteal nerve) and the rectus femoris (femoral nerve). The lateral femoral cutaneous nerve is vulnerable during the superficial exposure.
9Bone is a complex composite biomaterial demonstrating viscoelastic behavior. How does an increased strain rate affect the mechanical properties of cortical bone during high-energy trauma?
A.Bone exhibits decreased stiffness and absorbs less energy before catastrophic failure
B.Bone exhibits increased stiffness, increased ultimate failure strength, and absorbs more energy prior to fracture
C.Bone exhibits unchanged stiffness but experiences plastic deformation at a lower yield point
D.Bone behaves as an ideal isotropic fluid with zero shear stress resistance
Explanation: Viscoelastic materials demonstrate strain-rate sensitivity. When cortical bone is loaded at high strain rates (such as during motor vehicle collisions or blast injuries), its elastic modulus (stiffness) increases, its ultimate tensile and compressive strength increases, and it stores significantly more strain energy prior to failure. When failure finally occurs at this higher threshold, the released energy results in severe comminution and extensive soft-tissue injury.
10What is the primary objective of secondary thermal annealing or remelting during the manufacturing of highly cross-linked ultra-high-molecular-weight polyethylene (HXLPE) for total joint arthroplasty?
A.To induce surface oxidation and accelerate biological osseointegration
B.To extinguish residual free radicals generated during gamma or electron-beam irradiation and prevent long-term oxidative degradation
C.To decrease the molecular weight of the polymer chains and enhance flexibility
D.To eliminate the need for terminal packaging sterilization
Explanation: Ionizing radiation (gamma or electron-beam) breaks C-C and C-H bonds in UHMWPE to create desired cross-links that dramatically improve volumetric wear resistance. However, radiation also generates free radicals that react with oxygen in vivo, leading to chain scission, embrittlement, and delamination. Secondary thermal processing (remelting above 135°C or annealing below melting point) or antioxidant addition (e.g., vitamin E) mobilizes polymer chains to recombine and eliminate these residual free radicals.

About the Iraqi Board Orthopedic Surgery Exam

The Fellowship of the Iraqi Board for Medical Specializations in Fracture and Orthopedic Surgery (F.I.B.M.S.) is the definitive postgraduate surgical credential awarded by the Iraqi Board for Medical Specializations (IBMS) under the Ministry of Higher Education and Scientific Research (MOHESR). The 5-year structured curriculum provides comprehensive, supervised surgical residency training across general trauma, pelvic and acetabular reconstruction, joint arthroplasty, pediatric orthopedics, spinal surgery, hand and microvascular surgery, sports medicine, and musculoskeletal oncology. Important disclosure: Attaining the FIBMS credential requires five years of full-time hospital residency, operative apprenticeship, logbook certification, thesis defense, OSPE stations, and multi-committee oral viva examinations, none of which can be replaced by multiple-choice questions. This 100-question multiple-choice practice bank is an independent English-language educational study aid designed to reinforce core theoretical knowledge, biomechanical foundations, and clinical judgment for the Part 1 and Part 2 written certifying exams. It is not an official IBMS examination, does not simulate operative procedures or oral viva stations, and is not a substitute for formal accredited clinical residency training.

Exam sponsor: Scientific Council of Fracture and Orthopedic Surgery, Iraqi Board for Medical Specializations (المجلس العراقي للاختصاصات الطبية — المجلس العلمي لاختصاص جراحة العظام والكسور). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

The Iraqi Board in Fracture and Orthopedic Surgery follows a rigorous five-year structured postgraduate surgical training program administered by the Scientific Council under the Iraqi Board for Medical Specializations (IBMS) and the Ministry of Higher Education and Scientific Research (MOHESR). The assessment pathway comprises three key formal milestones: 1) Part One Written Examination (Primary Exam), taken at the end of Year 1 after intensive training in traumatology and general surgery, consisting of two written MCQ papers (Paper 1: Applied Basic Sciences; Paper 2: Basic Surgical Sciences; candidates are allowed up to 4 attempts and cannot proceed to Year 3 without passing). 2) Mid-Term Examination, taken at the end of Year 3, consisting of written MCQ and essay papers in fracture and orthopedic principles, alongside a clinical OSPE, short cases, and long case examination (up to 3 attempts permitted). 3) Final Certifying Examination, taken at the end of Year 5 following satisfactory completion of required rotations (including 1 month vascular surgery, 2 months neurosurgery, 2 months plastic surgery, and 1 month rehabilitation), full logbook verification, and formal defense of an approved scientific audit or research project (mini-thesis). The Final Examination consists of written papers (MCQ paper and essay paper requiring a minimum 60% per paper and 70% composite average) and a comprehensive clinical examination (OSPE, long cases, and oral viva voce conducted by four specialized committees: General Orthopedics and Hand, Fractures and Traumatology, Pediatric Orthopedics, and Spine Surgery; maximum 4 attempts allowed).

Time Limit

Not published by the Scientific Council of Fracture and Orthopedic Surgery.

Passing Score

The Scientific Council of Fracture and Orthopedic Surgery states that the general rules and regulations of assessment approved by the Iraqi fellowship board are applied; it does not publish a council-specific pass mark for its written papers.

Exam / Certification Fees

Prescribed by Iraqi Board for Medical Specializations / MOHESR regulatory bylaws

Exam sponsor website

Reported exam pass rate: Governed by general IBMS assessment regulations. The Scientific Council of Fracture and Orthopedic Surgery states that the general rules and regulations of assessment approved by the Iraqi fellowship board are applied, rather than publishing a council-specific pass mark. It does publish attempt rules: up to four attempts at the Part 1 Primary Examination, which must be passed before entering Year 3; up to three attempts at the Mid-Term Examination, held every six months; and up to four final examinations, each written pass qualifying the candidate for up to two clinical sittings. Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

20%

Orthopedic Basic Sciences, Biomechanics, Bone Biology & Biomaterials

Musculoskeletal surgical anatomy, cross-sectional neurovascular relationships, bone histology and mineralization, primary and secondary fracture healing biology, mechanical properties of bone (viscoelasticity, anisotropic behavior), biomaterials (stainless steel, titanium alloys, cobalt-chromium, ultra-high-molecular-weight polyethylene, ceramics, polymethylmethacrylate bone cement), implant corrosion, stress shielding, and bone graft biology.

25%

Orthopedic Trauma & Fracture Management

AO principles of fracture fixation (strain theory, absolute vs. relative stability, lag screws, neutralization/compression/bridging plates, intramedullary nails, external fixators), open fractures and Gustilo-Anderson classification, acute compartment syndrome diagnosis and emergency fasciotomy, pelvic ring disruptions (Young-Burgess classification) and hemodynamic resuscitation, acetabular fractures (Judet-Letournel), femoral neck/intertrochanteric fractures, periprosthetic fractures, and damage control orthopedics (DCO).

20%

Adult Reconstruction & Arthroplasty

Pathogenesis, radiographic Kellgren-Lawrence grading, and surgical indications for hip and knee osteoarthritis, osteonecrosis of the femoral head (Ficat-Arlet classification, core decompression vs. THA), primary total hip arthroplasty (THA) planning, offset, leg length, cemented vs. uncemented fixation, bearing wear and osteolysis, primary total knee arthroplasty (TKA) gap balancing and alignment, periprosthetic joint infection (PJI) diagnostic criteria (ICM/MSIS) and two-stage revision protocols.

18%

Pediatric Orthopedics & Congenital Disorders

Developmental dysplasia of the hip (DDH) clinical examination (Barlow, Ortolani, Galeazzi), Graf ultrasonographic classification, Pavlik harness management, closed/open reduction and pelvic osteotomies; congenital talipes equinovarus (CTEV/clubfoot) deformity components (CAVE) and Ponseti casting technique; slipped capital femoral epiphysis (SCFE/SUFE) presentation, stability, and in situ screw fixation; Legg-Calvé-Perthes disease stages and lateral pillar classification; osteogenesis imperfecta; Blount's disease; and cerebral palsy orthopedics.

17%

Spine, Sports Medicine, Hand & Musculoskeletal Oncology

Degenerative lumbar spine pathology, disc herniation with radiculopathy, lumbar spinal stenosis, spondylolisthesis (Meyerding classification, isthmic vs. degenerative), sports knee injuries (anterior cruciate ligament tears, meniscal tear patterns and vascular zones), shoulder pathology (rotator cuff tear patterns, subacromial impingement, Bankart and Hill-Sachs lesions), hand injuries (scaphoid fractures, Bennett/Rolando fractures, flexor tendon zones), and bone tumors (osteosarcoma, Ewing sarcoma, chondrosarcoma, giant cell tumor, metastatic bone disease workup).

Preparing for the Iraqi Board Orthopedic Surgery Exam

What You Need to Know

  • Passing score: The Scientific Council of Fracture and Orthopedic Surgery states that the general rules and regulations of assessment approved by the Iraqi fellowship board are applied; it does not publish a council-specific pass mark for its written papers.
  • Assessment: The Iraqi Board in Fracture and Orthopedic Surgery follows a rigorous five-year structured postgraduate surgical training program administered by the Scientific Council under the Iraqi Board for Medical Specializations (IBMS) and the Ministry of Higher Education and Scientific Research (MOHESR). The assessment pathway comprises three key formal milestones: 1) Part One Written Examination (Primary Exam), taken at the end of Year 1 after intensive training in traumatology and general surgery, consisting of two written MCQ papers (Paper 1: Applied Basic Sciences; Paper 2: Basic Surgical Sciences; candidates are allowed up to 4 attempts and cannot proceed to Year 3 without passing). 2) Mid-Term Examination, taken at the end of Year 3, consisting of written MCQ and essay papers in fracture and orthopedic principles, alongside a clinical OSPE, short cases, and long case examination (up to 3 attempts permitted). 3) Final Certifying Examination, taken at the end of Year 5 following satisfactory completion of required rotations (including 1 month vascular surgery, 2 months neurosurgery, 2 months plastic surgery, and 1 month rehabilitation), full logbook verification, and formal defense of an approved scientific audit or research project (mini-thesis). The Final Examination consists of written papers (MCQ paper and essay paper requiring a minimum 60% per paper and 70% composite average) and a comprehensive clinical examination (OSPE, long cases, and oral viva voce conducted by four specialized committees: General Orthopedics and Hand, Fractures and Traumatology, Pediatric Orthopedics, and Spine Surgery; maximum 4 attempts allowed).
  • Time limit: Not published by the Scientific Council of Fracture and Orthopedic Surgery.
  • Exam / certification fees: Prescribed by Iraqi Board for Medical Specializations / MOHESR regulatory bylaws Official sources

Using Our Practice Resources

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Iraqi Board Orthopedic Surgery: Suggested Study Strategy

1Master musculoskeletal basic sciences early: thoroughly review bone biology (osteoclast/osteoblast signaling, RANK/RANKL), secondary vs. primary bone healing, viscoelasticity, and the metallurgy and tribology of orthopedic biomaterials before taking the Part 1 exam.
2Internalize AO principles of fracture care: know the precise mechanical indications, relative vs. absolute stability requirements, and implant selections for lag screws, compression plates, bridging plates, and intramedullary nails across common traumatic injuries.
3Understand trauma emergency protocols: memorize ATLS resuscitation algorithms, pelvic binder application for unstable ring disruptions, the clinical signs and intracompartmental pressure thresholds (ΔP ≤ 30 mmHg) for acute compartment syndrome, and the Gustilo-Anderson open fracture protocol.
4Learn pediatric diagnostic and management pathways: know the age-specific management of developmental dysplasia of the hip (Pavlik harness under 6 months, closed reduction 6-18 months, open reduction/osteotomy over 18 months), Ponseti clubfoot manipulation sequences, and emergency stabilization of unstable SCFE/SUFE.
5Review adult joint reconstruction and spine guidelines: memorize the International Consensus Meeting (ICM) criteria for periprosthetic joint infection (PJI), wear mechanics of polyethylene bearings, red-flag signs of cauda equina syndrome, and oncologic staging principles for primary bone tumors.

Frequently Asked Questions

What is the governing authority and credential awarded by the Iraqi Board of Orthopedic Surgery?

The program is governed by the Scientific Council of Fracture and Orthopedic Surgery under the Iraqi Board for Medical Specializations (IBMS / المجلس العراقي للاختصاصات الطبية), affiliated with the Ministry of Higher Education and Scientific Research (MOHESR). Candidates who complete the 5-year residency and pass all examination milestones are awarded the Fellowship of the Iraqi Board for Medical Specializations (F.I.B.M.S.) in Fracture and Orthopedic Surgery.

What is the examination structure across the 5-year orthopedic residency program?

The curriculum establishes three formal examination stages: 1) Part One Written Examination at the end of Year 1, consisting of two MCQ papers covering Applied Basic Sciences and Basic Surgical Sciences (maximum 4 attempts allowed; passing is mandatory to enter Year 3). 2) Mid-Term Examination at the end of Year 3, comprising written MCQ and essay papers alongside a clinical OSPE, short cases, and long case assessment (maximum 3 attempts). 3) Final Certifying Examination at the end of Year 5, which includes written MCQ and essay papers followed by a clinical OSPE, long cases, oral examination conducted by four specialized committees (General Orthopedics/Hand, Traumatology, Pediatric Orthopedics, Spine Surgery), and defense of an approved research mini-thesis.

What are the passing scores and retake regulations for the written papers?

The council does not publish its own pass mark; its curriculum states that the general rules and regulations of assessment approved by the Iraqi fellowship board are used. The published attempt rules are: up to four attempts at the Part 1 Primary Examination, with a pass required before entering Year 3; up to three attempts at the Mid-Term Examination, held every six months; and up to four final examinations, where each written pass qualifies the candidate for up to two clinical examination sittings. Candidates failing to pass both written and clinical components within the permitted attempts are dismissed from the programme.

In what language are the Iraqi Board orthopedic surgery examinations conducted?

The Iraqi Board for Medical Specializations publishes this council's curriculum, syllabus and reference list in English, and English-language proficiency appears among the admission requirements set by the Ministry. The council's published curriculum does not, however, contain any statement of the language in which the examination papers themselves are set, so no language of assessment is asserted here. The council does list completion of a certified advanced English language course among its admission requirements. This site is an independent English-language study resource and is not affiliated with, endorsed by, or connected to the Iraqi Board for Medical Specializations; candidates should confirm the language of their sitting directly with their Scientific Council.

Does this 100-question practice bank substitute for residency training or the clinical/oral exam?

No. The Iraqi Board fellowship is a comprehensive 5-year surgical residency requiring intensive operative training, emergency trauma calls, logbook verification, an approved mini-thesis, and multi-committee clinical and oral viva examinations. This independent 100-question multiple-choice practice bank is strictly an educational tool designed to reinforce theoretical orthopedic knowledge, biomechanics, and clinical problem-solving for the Part 1 and Part 2 written papers; it is not an operative simulation or a substitute for formal accredited clinical residency training.