- How the 12-Category Blueprint Works
- Blueprint Weight Map at a Glance
- The Three Heaviest Categories
- Mid-Weight Categories: Where Scores Are Won
- Low-Weight Categories You Cannot Ignore
- Question Style, Format, and Delivery
- Eligibility, Fees, and Registration Mechanics
- Scheduling Your Review by Domain
- After the Exam: Ten-Year Certification and OCC
- Frequently Asked Questions
- The blueprint has 12 categories, and Arthritis (13-15%), Nerve (12-14%), and Infection (11-13%) are the three largest.
- The exam is 100 Type A single-best-answer questions in two hours, with no scheduled break.
- The passing score is 500 on a 200-800 scale; the fee for initial certification is $3,000.
- Soft Tissue is only 1-3% of the blueprint, but Amputation and Pediatrics (3-5% each) still deserve focused review.
How the 12-Category Blueprint Works
The Subspecialty Certification in Hand Surgery, offered through the American Osteopathic Board of Orthopedic Surgery (AOBOS) under the AOA, is built on an official 12-category content blueprint. Rather than assigning a single fixed percentage to each category, the blueprint uses ranges. Arthritis, for example, is listed at 13-15%, not an exact count. That means the number of questions you see in any category can shift slightly between administrations, and your preparation should be proportional rather than precise.
The blueprint we reference here is undated, so treat it as the current official outline rather than a version tied to a specific testing year. If you are still deciding whether this credential is right for you, start with What Is Hand Surgery CAQ Certification? for context on what the credential represents and how the label "Hand Surgery CAQ" relates to the official name, Subspecialty Certification in Hand Surgery.
Because the exam is only 100 questions, every percentage point is meaningful. A category weighted at 13-15% contributes roughly 13 to 15 items, while a category at 1-3% contributes only a handful. That arithmetic should drive how you allocate review hours, a theme we return to in the scheduling section below.
Blueprint Weight Map at a Glance
The table below lists all 12 categories in blueprint order with their published ranges. Use it as the backbone of your study plan.
| Category | Blueprint Range | Relative Priority |
|---|---|---|
| Arthritis | 13-15% | Highest |
| Nerve | 12-14% | Very high |
| Infection | 11-13% | Very high |
| Joint | 10-12% | High |
| Osseous | 9-11% | High |
| Tendon | 8-10% | Moderate-high |
| Microsurgery | 6-8% | Moderate |
| Tumor | 7-9% | Moderate |
| Vascular | 5-7% | Moderate |
| Amputation | 3-5% | Lower |
| Pediatrics | 3-5% | Lower |
| Soft Tissue | 1-3% | Lowest |
Add the three largest categories at their midpoints and you reach well over a third of the exam. Add Joint and Osseous and the five biggest categories account for roughly 60% of the content. That concentration is the single most useful fact in this guide. For a deeper view of how difficulty is distributed across these areas, see How Hard Is the Hand Surgery CAQ Exam?
The Three Heaviest Categories
Arthritis (13-15%)
Arthritis
The largest category on the blueprint. Expect questions that move from pathophysiology to operative decision-making in the hand, wrist, and elbow.
- Osteoarthritis of the thumb carpometacarpal joint and the full range of surgical options and their tradeoffs
- Inflammatory arthritis, including rheumatoid disease in the hand and wrist, and the surgical implications of medical management
- Posttraumatic and degenerative wrist arthritis patterns and salvage procedures
- Interphalangeal and metacarpophalangeal joint arthritis, arthrodesis versus arthroplasty reasoning
Because Arthritis overlaps conceptually with the Joint category (10-12%), candidates who master joint-level anatomy and reconstruction principles get a double benefit. Study the two together.
Nerve (12-14%)
Nerve
Nerve questions reward a clean mental map of anatomy, electrodiagnostics, and timing of repair.
- Compression neuropathies at the carpal tunnel, cubital tunnel, and other sites, including differential diagnosis
- Peripheral nerve injury classification, expected recovery, and when to repair, graft, or transfer
- Brachial plexus and tendon or nerve transfer principles at a high level
- Interpreting nerve conduction and electromyography findings in a clinical vignette
Infection (11-13%)
Infection
Infection is weighted nearly as heavily as Nerve, which surprises candidates who assume trauma and reconstruction dominate.
- Flexor tenosynovitis, deep space infections, and the clinical signs that drive urgent drainage
- Septic arthritis and osteomyelitis of the hand and wrist
- Necrotizing soft tissue infection recognition and management priorities
- Organism selection, antibiotic reasoning, and special hosts such as diabetic or immunocompromised patients
Mid-Weight Categories: Where Scores Are Won
The next tier, Joint, Osseous, and Tendon, covers roughly 27-33% of the exam when combined. These are bread-and-butter topics for any hand surgeon, which can create false confidence. The exam tests precise management choices, not general familiarity.
Joint (10-12%)
Think instability, dislocations, ligament injury, and stiffness.
- Carpal instability patterns and ligament injury staging
- Finger and thumb joint dislocations and fracture-dislocations, including when closed reduction fails
- Elbow and distal radioulnar joint problems as they relate to hand function
- Contracture and stiffness management, including Dupuytren disease considerations
Osseous (9-11%)
Fractures and bone pathology dominate this category.
- Distal radius, scaphoid, metacarpal, and phalangeal fracture classification and fixation choices
- Nonunion, malunion, and avascular necrosis, including the carpal bones
- Fixation strategy: when to choose pins, plates, screws, or nonoperative care
Tendon (8-10%)
Tendon questions often hinge on zone-based reasoning and rehabilitation protocols.
- Flexor tendon injury by zone, repair technique principles, and postoperative motion protocols
- Extensor tendon injuries, including mallet and boutonniere deformities
- Tendon transfers for nerve palsy and reconstructive strategies
- Stenosing tenosynovitis and other overuse tendon conditions
Microsurgery (6-8%), Tumor (7-9%), and Vascular (5-7%) follow closely. Together they represent a meaningful block of roughly 18-24% of the exam, and they are the areas where candidates who trained at high-volume centers tend to feel more comfortable than those who did not.
Microsurgery, Tumor, and Vascular
These categories test principles more than rare technical detail.
- Microsurgery: replantation and revascularization indications, flap selection, and perioperative management of the vascular anastomosis
- Tumor: benign soft tissue and bone lesions, malignant presentations, and appropriate workup before excision
- Vascular: ischemia evaluation, vasospastic conditions, thrombosis, and aneurysm or vascular injury recognition
Low-Weight Categories You Cannot Ignore
Amputation (3-5%), Pediatrics (3-5%), and Soft Tissue (1-3%) together may account for only a modest slice of the exam, but they are also the categories most likely to be under-prepared, which makes them efficient places to pick up points.
- Amputation: level selection, stump management, and the relationship to replantation decisions. Overlap with Microsurgery means one review session covers both.
- Pediatrics: congenital hand differences, pediatric fracture patterns and growth plate considerations, and timing of surgical intervention in children.
- Soft Tissue: wound coverage, burns, and reconstructive ladder concepts. At 1-3%, expect only a few questions, but they tend to be principle-based and answerable with focused review.
Key Takeaway
Do not skip the low-weight categories. Three to five questions each from Amputation and Pediatrics, plus a couple from Soft Tissue, can be the margin between a 480 and a 520 when the passing score is 500.
Question Style, Format, and Delivery
The exam consists of 100 Type A single-best-answer multiple-choice questions delivered in one two-hour block with no scheduled break. That works out to roughly 72 seconds per question, which is generous for recall items but tight for long clinical vignettes. Pacing practice matters more than most candidates expect.
Delivery is through MonitorEDU remote proctoring, and AOA guidance references the PARADIGM practice interface, which is worth exploring before exam day so the platform itself is not a distraction. You will take the exam in a private remote setting after completing equipment checks, and an authorized whiteboard or other approved tools may be used. We have not verified any open-book or adaptive-testing claims, so assume neither applies and prepare for a conventional fixed-length exam.
Scoring uses a 200-800 scale with a passing score of 500. For a full breakdown of what that number means in practice, see Hand Surgery CAQ Passing Score 2026: Exactly What You Need to Pass. If you want data on how candidates perform, Hand Surgery CAQ Pass Rate 2026: What the Data Shows covers what is and is not publicly known.
Eligibility, Fees, and Registration Mechanics
The initial certification fee is $3,000. Eligibility to sit for the exam begins after a one-year ACGME hand fellowship, with verification, licensure, and ethics requirements. Sitting for the exam and being awarded certification are separate milestones, though. The award additionally requires:
- Qualifying AOBOS or AOBS primary certification
- Two years of active practice
- Appropriate privileges
- 125 major hand cases logged within a consecutive 12-month period within three years
- At least 50% hand operative caseload
Case-log documentation is the part of the process candidates most often underestimate, so begin tracking your cases early. For the full eligibility pathway, read Hand Surgery CAQ Requirements 2026: Eligibility, Prerequisites & How to Qualify, and for a line-by-line view of what you will spend, see Hand Surgery CAQ Certification Cost 2026: Complete Pricing Breakdown.
One scheduling note: the September 25, 2026 sitting has already passed. Check Hand Surgery CAQ Exam Dates 2026: Testing Windows, Deadlines & Scheduling for how to plan around the next available administration.
Scheduling Your Review by Domain
Given the blueprint weights, a domain-ordered plan makes more sense than a generic weekly template. The sequence below front-loads the heaviest categories and pairs related ones. Adjust the length to your timeline, and see the Hand Surgery CAQ Study Guide for a fuller plan.
Arthritis and Joint
- Pair these because they overlap (together roughly 23-27% of the exam)
- Thumb CMC options, inflammatory arthritis surgery, carpal instability
Nerve
- Compression neuropathies, injury classification, electrodiagnostic interpretation
- Nerve transfers and repair timing
Infection and Osseous
- Urgent infection recognition and organism-driven antibiotic choices
- Fracture classification, fixation choices, scaphoid and nonunion management
Tendon, Microsurgery, Amputation
- Tendon zones and protocols, then replantation and amputation level decisions together
Tumor, Vascular, Pediatrics, Soft Tissue
- Cover the remaining categories, then take full timed 100-question sessions
If you want a condensed refresher in the final days, Hand Surgery CAQ Cheat Sheet 2026: One-Page Review of Must-Know Facts is designed for that purpose.
After the Exam: Ten-Year Certification and OCC
Certification runs on a ten-year cycle with Osteopathic Continuous Certification (OCC). For the 2025-2027 cycle, requirements include 60 CME hours with at least 15 Category 1-A, a quality-improvement attestation, and professional standing. Hand surgery retains the long-form ten-year OCC exam, so the blueprint knowledge you build now stays relevant. Treat your preparation as an investment in a decade of recertification, not only a single sitting.
Wondering about the career side? Is the Hand Surgery CAQ Certification Worth It? and Hand Surgery CAQ Salary Guide 2026 explore the professional return on this credential.
Frequently Asked Questions
The official blueprint has 12 categories: Amputation, Arthritis, Infection, Joint, Microsurgery, Nerve, Osseous, Pediatrics, Soft Tissue, Tendon, Tumor, and Vascular. Each is assigned a percentage range rather than a fixed value.
Arthritis is the largest at 13-15%, followed by Nerve at 12-14% and Infection at 11-13%. Joint (10-12%) and Osseous (9-11%) come next.
It is 100 Type A single-best-answer multiple-choice questions in a two-hour block with no scheduled break, delivered with MonitorEDU remote proctoring. The passing score is 500 on a 200-800 scale.
Yes, briefly. A short, principle-focused review can secure a few easy points, but it should consume far less time than Arthritis, Nerve, or Infection.
Start with What Is Hand Surgery CAQ? and Hand Surgery CAQ Certification for background, then use the domain breakdown above to build your plan.