I now have all the content from your PDFs. Here is a complete, exam-ready review covering all 42 points and MCQs, directly referenced from your course materials.
Complete Orthopaedic Exam Study Guide
Based on Your Course PDFs + Standard Orthopaedic Knowledge
SECTION A: CORE CONCEPTS (Points 1-28)
1. Shoulder Dynamic Stabilizers - Rotator Cuff
From PDF 2 (Shoulder_Arm_Examination):
The rotator cuff consists of four muscles:
- Supraspinatus - initiates abduction
- Infraspinatus - external rotation
- Teres minor - external rotation
- Subscapularis - internal rotation
These muscles compress the humeral head into the glenoid fossa, providing dynamic (muscle-driven) stabilization. Unlike the bony socket (which is shallow), the rotator cuff is the PRIMARY stabilizer keeping the humeral head centered during movement. Without it, the deltoid would simply pull the humerus upward and out of the joint.
Key exam point: The rotator cuff = dynamic stabilizer. The labrum/capsule = static stabilizer.
2. Lateral Shoulder Pain → Rotator Cuff Disease
From PDF 2 (Pain Patterns slide):
"Lateral → cuff"
Lateral shoulder pain is the hallmark presentation of rotator cuff pathology (tendinopathy, partial/full thickness tears, impingement). This is in contrast to:
- Anterior pain = biceps tendon pathology
- Global/diffuse pain = frozen shoulder (adhesive capsulitis)
3. Infraspinatus Function - External Rotation
From PDF 2 (Muscle Strength slide):
"External rotation" is listed as a specific muscle strength test.
The infraspinatus (+ teres minor) is the primary external rotator of the shoulder. Weakness on external rotation testing = infraspinatus injury. This is tested with the elbow at 90° flexion, arm at the side, resisting outward rotation. Infraspinatus tears are very common in rotator cuff disease.
4. Adhesive Capsulitis (Frozen Shoulder)
From PDF 2 (Active vs Passive ROM slide):
"Capsular restriction"
From Pain Patterns slide:
"Global: frozen shoulder"
Frozen shoulder = global restriction of BOTH active AND passive ROM in a capsular pattern. The capsule becomes inflamed and fibrosed. Classic capsular pattern: external rotation > abduction > internal rotation is most restricted. The fact that PASSIVE ROM is also restricted (not just active) distinguishes it from muscle/tendon problems.
- Active-only restriction = muscle or tendon problem
- Active AND passive restriction = joint/capsule problem (frozen shoulder)
5. Forearm Rotation Joint - Proximal Radioulnar Joint
From PDF 3 (Elbow_Forearm - Functional Anatomy slide):
"Proximal radioulnar" joint is listed as one of the three elbow joints.
From Biomechanics slide:
"Pronation-supination"
Pronation and supination (forearm rotation) occur at the proximal AND distal radioulnar joints, but the proximal radioulnar joint is the primary articulation examined at the elbow. Normal range: ~80° pronation / ~80° supination (PDF 3, ROM slide).
6. Epicondylitis Differentiation
From PDF 3 (Pain Patterns slide):
"Lateral → tennis elbow"
"Medial → golfer's"
| Condition | Location | Pain | Mechanism |
|---|
| Lateral epicondylitis (Tennis elbow) | Lateral elbow | Lateral epicondyle | Wrist extensor overuse (Cozen's test +) |
| Medial epicondylitis (Golfer's elbow) | Medial elbow | Medial epicondyle | Wrist flexor overuse (Golfer's test +) |
From Special Tests slide (PDF 3): "Cozen test" = lateral; "Golfer's test" = medial.
7. Elbow Palpation - Radial Head Location
From PDF 3 (Key Structures slide):
"Epicondyles, Olecranon, Radial head"
The radial head sits immediately distal to the lateral epicondyle. You can confirm it by palpating while the patient pronates/supinates - you feel it rotate under your finger. This is important in diagnosing radial head fractures (point tenderness here after trauma).
8. Ulnar Nerve at the Cubital Tunnel
From PDF 3 (Neurovascular Assessment slide):
"Ulnar nerve"
From Special Tests slide:
"Tinel sign" (performed over the cubital tunnel for ulnar nerve)
The ulnar nerve passes through the cubital tunnel behind the medial epicondyle. It is the most commonly injured nerve at the elbow. Injury presents with:
- Paresthesia in ring and little fingers
- Weakness of intrinsic hand muscles
- Claw hand deformity (ulnar claw)
- Positive Tinel's sign at the medial elbow
9. Carpal Tunnel Syndrome - Median Nerve
From PDF 7 (Wrist_Hand - Median Nerve slide):
"Carpal tunnel, Phalen, Tinel"
The median nerve is compressed as it passes through the carpal tunnel under the flexor retinaculum. Signs/symptoms:
- Numbness and tingling in thumb, index, middle, and radial half of ring finger
- Weakness of thenar muscles (thumb abduction/opposition)
- Positive Phalen's test (wrist flexion for 60 sec reproduces symptoms)
- Positive Tinel's sign (tapping over carpal tunnel)
10. Scaphoid Fracture (FOOSH)
From PDF 7 (Scaphoid Fracture Overview slide):
| Feature | Detail |
|---|
| Cause | FOOSH (Fall On OutStretched Hand) |
| Symptoms | Anatomical snuffbox tenderness |
| Risk | Avascular Necrosis (AVN) - proximal pole has no direct blood supply |
| Initial imaging | X-ray (may be normal initially) |
| Occult fracture | MRI is the gold standard for occult/missed scaphoid fractures |
From PDF 7 (Fracture Exam slide):
"Snuffbox tenderness, Axial compression pain"
If X-ray is negative but clinical suspicion is high (snuffbox tenderness after FOOSH): treat as fracture (thumb spica cast) and arrange MRI to exclude occult fracture.
11. Tendon Integrity - Flexor Tendon Injury
From PDF 7 (Tendon Injuries slide):
"Flexor: cannot flex"
"Extensor: cannot extend"
Inability to flex fingers = flexor tendon injury. This is a direct, testable correlation. Test each finger flexor individually (FDS: flex PIP with other fingers held; FDP: flex DIP).
12. Knee Twisting Mechanisms - Ligament Injury + Hemarthrosis
From PDF 6 (Red Flags slide):
"Hemarthrosis, Inability to bear weight, Deformity"
Twisting knee injuries most commonly cause:
- Ligament tears (ACL is most common - "pop" + immediate hemarthrosis)
- Meniscal tears (delayed swelling, locking, clicking)
- Hemarthrosis (blood in joint) = rapid swelling within 2 hours = ligament tear until proven otherwise
- ACL + MCL + medial meniscus = "Unhappy Triad" (O'Donoghue)
13. Ankle Sprains - Lateral Ligaments
From PDF 5 (Pain Patterns slide):
"Lateral → ligament sprain"
From PDF 5 (Key Structures):
"Ligaments: ATFL, CFL, Deltoid"
Inversion injury (foot rolls inward) sprains the lateral ligaments:
- ATFL (anterior talofibular ligament) - most commonly injured first
- CFL (calcaneofibular ligament)
- PTFL (posterior talofibular) - only in severe injuries
The medial deltoid ligament is injured in eversion injuries (less common, stronger ligament).
14. Ottawa Ankle Rules
From PDF 5 (Red Flags slide):
"Unable to bear weight" = red flag requiring X-ray
Ottawa Ankle Rules - X-ray is required if:
- Unable to bear weight (take 4 steps) immediately after injury AND at time of assessment
- Bone tenderness at posterior edge or tip of lateral malleolus
- Bone tenderness at posterior edge or tip of medial malleolus
- Bone tenderness at base of 5th metatarsal (Ottawa Foot Rules)
- Bone tenderness at navicular
Inability to bear weight is the single most important criterion to memorize.
15. Vascular Assessment - Dorsalis Pedis Pulse
From PDF 5 (Neurovascular Assessment slide):
"Dorsalis pedis pulse, Posterior tibial pulse, Sensation"
In ankle and foot trauma, always assess:
- Dorsalis pedis pulse (dorsum of foot, lateral to extensor hallucis longus tendon)
- Posterior tibial pulse (behind medial malleolus)
- Capillary refill, sensation, movement
16. Achilles Tendon Rupture - Thompson Test
From PDF 5 (Special Tests slide):
"Thompson test"
Thompson test (Simmonds test) = definitive test for Achilles rupture:
- Patient prone, knee bent to 90°
- Examiner squeezes the calf muscle
- Normal: foot plantarflexes
- Positive (rupture): NO plantarflexion response
- A positive Thompson test = complete Achilles tendon rupture until proven otherwise
17. Knee Dislocation - Popliteal Artery Emergency
From PDF 6 (Neurovascular Injury slide):
"Popliteal artery: limb-threatening"
From PDF 6 (Neurovascular Imaging slide):
"Doppler, CTA"
Knee dislocation is a vascular emergency. The popliteal artery is tethered at the knee by the soleus arch and is easily torn. CT Angiography (CTA) is mandatory even if distal pulses seem present because:
- An intimal tear can occlude hours later (delayed thrombosis)
- Normal pulses do not exclude vascular injury
- Missed vascular injury leads to limb loss within 6 hours
18. Common Peroneal Nerve - Foot Drop
From PDF 6 (Neurovascular Injury slide):
"Peroneal nerve: foot drop"
The common peroneal (fibular) nerve wraps around the fibular neck - extremely vulnerable here. Injury causes:
- Foot drop (inability to dorsiflex the foot)
- Weakness of foot eversion
- Sensory loss over dorsum of foot and lateral leg
- Causes: fibular neck fracture, knee dislocation, prolonged pressure (crossed leg position)
19. Pelvic Fractures
From PDF 8 (Pelvis_Hip_Examination):
i. High-energy trauma:
"High-energy trauma, Pain, Inability to stand" (Trauma History slide)
ii. Massive hemorrhage and shock:
"Potential sign of shock or severe problem" (Red Flags slide)
"Pain, Deformity, Shock" (Pelvic Fracture Signs slide)
The pelvis contains large vessels (iliac vessels). Pelvic ring fractures can cause 4+ liters of blood loss into the retroperitoneal space - a life-threatening emergency.
iii. Bladder injury - hematuria:
"Bladder - associated injury" (Associated Injuries slide)
"Hematuria, Suprapubic pain, Urinary retention" (Bladder Injury slide)
Hematuria is the key indicator of bladder/urethral injury in pelvic fractures.
iv. Pelvic compression - ONE TIME ONLY:
"Gentle compression, Avoid repetition" (Pelvic Exam slide)
Repeat compression worsens bleeding by disrupting clots. Perform once only.
20. First-Line Imaging Principles
From PDF 9 (Treatment - Imaging table) and PDF 1, PDF 3, PDF 5, PDF 6, PDF 7:
| Modality | Use |
|---|
| X-ray | ALWAYS first-line for fractures/dislocations |
| CT | Complex fractures, bone detail, pelvic fractures |
| MRI | Soft tissue (ligaments, tendons), occult fractures (scaphoid) |
| Ultrasound | Rotator cuff, biceps tendon, dynamic assessment, FAST scan |
21. FAST Ultrasound
From PDF 8 (FAST & CT Diagnostic Tools slide):
"FAST: Bleeding detection using ultrasound"
Focused Assessment with Sonography in Trauma (FAST):
- Rapid bedside screening tool for free intra-abdominal/pericardial fluid (blood)
- Examines: hepatorenal recess (Morrison's pouch), splenorenal recess, pelvis, pericardium
- Not diagnostic for solid organ injury - only detects free fluid
- Takes 2-3 minutes, no radiation, repeatable
22. Cast Care Fundamentals
From PDF 4 (Cast_Fixation_Care):
Purpose of cast:
"Immobilization, Maintain alignment, Promote healing"
Immediate post-cast care:
"Elevation: Raise the injured limb above heart level to reduce swelling"
Key cast care points:
- Elevate immediately above heart level
- Keep dry
- No objects inside cast
- Monitor 5 Ps (see point 24)
- Report: numbness, tingling, severe pain, pallor, cold fingers/toes
23. Neurovascular Checks After Joint Reduction
From PDF 9 (Dislocation Management slide):
"Reduction → Immobilization → Check neurovascular"
After reducing ANY dislocated joint, immediately check:
- Distal pulse
- Capillary refill
- Sensation (nerve function)
- Motor function
- This confirms the reduction was successful and no new neurovascular injury occurred during manipulation.
24. The "5 Ps" of Compartment Syndrome / Neurovascular Assessment
From PDF 4 (Neurovascular Monitoring - 5P slide):
| P | What to Assess |
|---|
| Pain | Pain in the affected area (especially out of proportion) |
| Pallor | Skin color changes indicating poor blood flow |
| Pulse | Pulse quality and rate in the affected limb |
| Paresthesia | Numbness or tingling (sensory change) |
| Paralysis | Muscle weakness or inability to move |
Some sources also include Pressure (tense compartment) as a 6th P.
25. Compartment Syndrome - Earliest Warning Sign
From PDF 4 (Medical Glossary - Compartment Syndrome slide):
"Severe Pain: Intense pain that can be persistent and high in intensity"
"Pain on Passive Stretch: Discomfort or pain experienced when a muscle is stretched passively, often a sign of muscle or nerve pathology, such as in compartment syndrome"
From PDF 9 (Compartment Syndrome slide):
"Severe pain, Pain on passive stretch, Emergency"
Pain out of proportion + pain on passive stretch = EARLIEST and most reliable sign of compartment syndrome. This occurs before pulse loss (late sign). Paresthesia (tingling) is also an early sign.
26. Surgical Emergencies - Fasciotomy
From PDF 4 (Complications of Cast slide):
"Compartment syndrome, Pressure sores, Tight cast"
From PDF 9 (Compartment Syndrome slide):
"Emergency"
Tight casts and rising compartment pressure require:
- Immediate cast splitting/removal (first step for cast-related pressure)
- Emergency fasciotomy - surgical release of the fascial compartment
- Must be done within 6 hours to prevent permanent muscle/nerve damage
- Delayed fasciotomy = Volkmann's ischemic contracture, rhabdomyolysis, renal failure
27. ATLS Guidelines - Primary Survey (ABCDE)
From PDF 9 (Primary Survey: ABCDE Approach slide):
"Airway: Ensure clear and secure"
"Breathing & Circulation: Assess and address immediately"
"Disability & Exposure: Check neurological responsiveness, expose patient"
"Life before limb"
| Letter | Priority |
|---|
| A | Airway (with cervical spine control) |
| B | Breathing and ventilation |
| C | Circulation and hemorrhage control |
| D | Disability (neurological status, GCS) |
| E | Exposure and Environment |
Life-threatening conditions (hemorrhage, airway obstruction) always take priority over fracture fixation.
28. Fracture Treatment Classification
From PDF 9 (Conservative Treatment slide):
"Casting, Splinting, Stable fractures"
From PDF 9 (Surgical Treatment slide):
"ORIF, Intramedullary nail, External fixation"
From PDF 9 (Indications for Surgery slide):
"Displacement, Instability, Open fracture, Neurovascular injury"
| Conservative | Surgical |
|---|
| Cast/splint | Plate + screws (ORIF) |
| Stable, non-displaced fractures | Intramedullary nail |
| Closed, no neurovascular injury | External fixator |
| Open fracture, displaced, unstable |
SECTION B: MCQ ANSWERS WITH EXPLANATIONS
Q29. Correct sequence in musculoskeletal evaluation?
Answer: C - History → Physical Exam → Investigations
From PDF 1 (Examination Sequence slide):
Step 1: History | Step 2: Physical Exam | Step 3: Investigations
This is the universal clinical approach. History guides what you look for in the exam; the exam guides which investigations are needed. Imaging without clinical context leads to over-investigation.
Q30. Which component provides the most important diagnostic information?
Answer: C - History taking
From PDF 1 (Take-home Message slide):
"Clinical exam is most important"
"Diagnosis = History + Exam + Investigations"
From PDF 1 (Importance of Clinical Exam slide):
"Foundation of diagnosis, Guides imaging, Reduces unnecessary tests"
History taking yields the most diagnostic information in musculoskeletal medicine. Studies consistently show that 70-80% of diagnoses can be made from history alone. The exam and investigations confirm what the history suggests.
Q31. Which pain characteristics suggest inflammatory pathology?
Answer: C - Night pain and morning stiffness
From PDF 1 (Red Flags slide):
"Night pain" listed as a red flag
Inflammatory pathology (rheumatoid arthritis, ankylosing spondylitis, infection, tumor) classically produces:
- Night pain (not relieved by rest, often wakes patient)
- Morning stiffness lasting >30-60 minutes
- Pain at rest
Mechanical pain is: worse with activity, relieved by rest, no morning stiffness. Night pain is also a red flag for tumor or infection.
Q32. Twisting knee injury most commonly results in:
Answer: B - Ligament injury
From PDF 6 (Red Flags slide):
"Hemarthrosis" (blood in joint from ligament tear)
From PDF 9 (Classification):
Twisting = soft tissue mechanism (not fracture mechanism)
Twisting forces place rotational stress on ligaments, particularly the ACL. Fractures require axial loading or direct impact. Twisting = ligament injury (+ possible meniscus involvement).
Q33 (Q5). Red flag in musculoskeletal history?
Answer: C - Night pain
From PDF 1 (Red Flags slide):
"Night pain, Weight loss, Neurological deficit"
Night pain = red flag for:
- Malignancy (primary bone tumor, metastasis)
- Infection (osteomyelitis, septic arthritis)
- Inflammatory arthritis
- Requires urgent investigation (do not dismiss as mechanical pain)
Q34 (Q6). First step in physical examination of a joint?
Answer: B - Inspection
From PDF 1 (Inspection slide):
"Deformity, Swelling, Muscle wasting"
From all PDFs: The clinical approach is consistently described as:
"Look → Feel → Move → Special tests"
Inspection (Look) is ALWAYS first. You observe before you touch. This reveals deformity, swelling, wasting, bruising, scars, posture, and gait without biasing the patient.
Q35. Lateral elbow pain most commonly associated with:
Answer: C - Lateral epicondylitis
From PDF 3 (Pain Patterns slide):
"Lateral → tennis elbow"
Lateral epicondylitis (tennis elbow) is caused by overuse of the wrist extensors, leading to degeneration at their origin on the lateral epicondyle. It is the most common cause of lateral elbow pain. Confirmed with Cozen's test.
Q36. Structure palpated just distal to the lateral epicondyle:
Answer: B - Radial head
From PDF 3 (Key Structures slide):
"Epicondyles, Olecranon, Radial head"
The radial head lies immediately distal to the lateral epicondyle. Palpate it while the patient rotates their forearm - you feel it turn. Point tenderness here = radial head fracture.
- Olecranon = posterior (posterior elbow)
- Coronoid process = anterior (inside the elbow)
- Ulnar nerve = medial side (cubital tunnel)
Q37. Pain over the medial epicondyle is most likely due to:
Answer: B - Golfer's elbow (Medial epicondylitis)
From PDF 3 (Pain Patterns slide):
"Medial → golfer's"
Medial epicondylitis = overuse of wrist flexors and pronators at their origin on the medial epicondyle. Confirmed with the Golfer's test (pain on resisted wrist flexion). Tennis elbow is LATERAL.
Q38/39. First-line imaging modality in elbow trauma:
Answer: D - X-ray
From PDF 3 (X-ray slide):
"X-ray: First-line, AP + lateral, Include joints"
From PDF 1 (X-ray slide):
"First-line, Bone alignment, Fracture detection"
X-ray is always first-line for any suspected fracture or dislocation. CT and MRI are reserved for complex cases or soft tissue injury after X-ray has been obtained.
Q40. Best modality for evaluating soft tissue structures of the elbow:
Answer: C - MRI
From PDF 3 (CT and MRI slide):
"CT → complex fracture, MRI → soft tissue"
MRI provides the best visualization of ligaments, tendons, cartilage, and nerves. It is the investigation of choice for:
- Collateral ligament tears
- Biceps/triceps tendon injuries
- Nerve pathology
- Occult fractures
Q41. Primary purpose of a cast:
Answer: C - Immobilize and maintain alignment
From PDF 4 (Purpose of Cast slide):
"Immobilization, Maintain alignment, Promote healing"
A cast does three things: immobilizes the fracture, maintains bone alignment while healing occurs, and promotes bone union. It does not primarily reduce pain (though pain improves with immobilization) nor prevent infection.
Q42. Most important immediate care after applying a cast:
Answer: B - Elevate the limb
From PDF 4 (Immediate Post-Cast Care table):
"Elevation: Raise the injured limb above heart level to reduce swelling"
This is the first and most important step after cast application. Post-cast edema is the primary early complication - elevation reduces venous congestion and lymphatic stasis, preventing compartment syndrome. Physiotherapy comes later in the healing process.
QUICK REFERENCE SUMMARY TABLE
| Topic | Key Fact |
|---|
| Rotator cuff | Dynamic stabilizer; 4 muscles (SITS) |
| Lateral shoulder pain | Rotator cuff disease |
| External rotation weakness | Infraspinatus injury |
| Frozen shoulder | Active AND passive ROM restricted |
| Pronation/supination | Proximal radioulnar joint |
| Lateral elbow pain | Lateral epicondylitis (Tennis elbow) |
| Medial elbow pain | Medial epicondylitis (Golfer's elbow) |
| Just distal to lateral epicondyle | Radial head |
| Most vulnerable elbow nerve | Ulnar nerve (cubital tunnel) |
| Carpal tunnel | Median nerve compression |
| FOOSH + snuffbox tenderness | Scaphoid fracture - MRI for occult |
| Cannot flex fingers | Flexor tendon injury |
| Twisting knee + hemarthrosis | Ligament injury (ACL) |
| Inversion ankle sprain | Lateral ligaments (ATFL first) |
| Ottawa rule - X-ray trigger | Cannot bear weight |
| Ankle/foot pulse | Dorsalis pedis |
| Achilles rupture test | Thompson test (calf squeeze) |
| Knee dislocation emergency | CT angiography (popliteal artery) |
| Fibular neck injury | Foot drop (common peroneal nerve) |
| Pelvic compression | ONE time only |
| Pelvic fracture + hematuria | Bladder injury |
| First-line imaging | X-ray always first |
| Complex fracture imaging | CT scan |
| Soft tissue imaging | MRI |
| FAST scan | Intra-abdominal free fluid (blood) |
| Post-cast immediate care | Elevate limb |
| 5 Ps | Pain, Pallor, Pulse, Paresthesia, Paralysis |
| Earliest compartment syndrome sign | Pain out of proportion + pain on passive stretch |
| Compartment syndrome treatment | Emergency fasciotomy |
| ATLS primary survey | ABCDE - Life before limb |
| Stable fracture treatment | Conservative (cast/splint) |
| Displaced/open fracture | Surgical (ORIF/nail) |
| Exam sequence | History → Physical Exam → Investigations |
| First step in physical exam | Inspection (Look first) |
| Red flags | Night pain, weight loss, neurological deficit |
All answers above are directly supported by your course PDFs (PDF 1-9). Good luck on your exam!
