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LIM’S LIMB X-RAY
INTERPRETATION
Dr Edward Lim FY2 / Mr Shukla Orthopaedic Surgeon
17th OCTOBER 2023 18:30
@ BRITISHINDIANMEDICASSOCIATION @BINDIANMEDICS @BIMA
BIMA Radiology Crash CourseOverview
- Introduction - Indications for limb x-rays
- Types of limb x-rays
- Anatomy review (bones, joints, soft tissue)
- XR reports
- Image interpretation (ABCS)
- Common fractures classifications/types
- Clinical cases
- SBA Q’s
BIMA Radiology Crash CourseIntroduction
What, when and why limb x-rays? Indications
- Trauma - falls, RTA, physical altercations
- Infections - joint infections, osteomyelitis
- Arthritis - Inflammatory vs non-inflammatory
- foreign bodies
BIMA Radiology Crash CourseTypes of limb x-rays
- Upper limb - shoulder girdle, humerus, elbow, radius,
ulnar, wrist, hands
- Lower limb - pelvic girdle, head of femur, femur shaft,
knee, tibia, fibula, ankle, foot
- Different views - AP, lateral, oblique
BIMA Radiology Crash CourseLimb x-ray anatomy
- Bone - Densest, white
- Bone density
- Alignment
- Lesions/fractures
- Soft tissue - less dense, grey
- Muscles
- Tendons & ligaments
- calcification
- Joint - least dense, black/grey
- Joint space
Source: https://radiopaedia.org/cases/normal-knee-x-rays?lang=us
- Alignment
- effusions
BIMA Radiology Crash CoursePlain film/X-ray reports
- Patient info
Example report:
Name: Mickey Mouse, 18/11/28
- Date & time Modality: Left knee AP & lateral view
Date & time: 17/10/23, 14:30
- Radiographic views Findings: “No fracture is seen. Normal
alignment of bone and architecture. Joint
spaces and articular margins intact. Soft
tissues normal.”
- Findings
Conclusion: No significant abnormality
seen.
- Conclusion/Impression
BIMA Radiology Crash CourseInterpreting limb plain films (ABCS)
A - alignment and joint space
- Smooth contours and lines
- Loss of joint space
- Osteophytes
- Chondrocalcinosis
Source: https://radiopaedia.org/Source: https://radiopaedia.org/cases/severe-osteoarthritis-of-the-knee?lang=us
BIMA Radiology Crash CourseABCS Approach
B - bone texture
- Normal trabeculae
- Good density
BIMA Radiology Crash CourseABCS Approach
C - cortices
- Fracture
- Bone tumour
- osteophytes
Source: https://radiopaedia.org/cases/osteosarcoma-8?lang=us
BIMA Radiology Crash CourseABCS Approach
S - soft tissues
- Difficult to elicit on plain films
- Swellings, effusions or foreign bodies
- Sometimes require other imaging modalities (eg.
MRI)
Source: Source:
https://radiopaedia.org/cases/https://radiopaedia.org/cases/soft-tissue-haemangioma-in
tramuscular-1?lang=us
BIMA Radiology Crash CourseFractures
Complete Fractures
- Transverse
- Oblique
- Spiral
- Comminuted
Incomplete Fractures
- Greenstick
- Buckle
- Bowing
BIMA Radiology Crash CourseDescribing fractures
- Where is the fracture
- What type of fracture
- Open vs closed fracture
- Displacement
- Angulation
- Rotation (difficult to appreciate on X-rays) Source: https://radiopaedia.org/cases/femoral-shaft-fracture-2
- Translation
BIMA Radiology Crash CourseFOOSH fractures
Colles vs Smith’s Fracture
- Colles fracture: distal radial fracture when fallen onto
outstretched hand in wrist EXTENSION
- Smith’s fracture: distal radial fracture when fallen onto
outstretched hand in wrist FLEXION
BIMA Radiology Crash CourseFOOSH fractures
Monteggia vs Galeazzi Fracture
- Monteggia fracture (Manchester United): Ulnar
fracture with associated proximal radial head
dislocation
- Galeazzi fracture (Glasgow Rangers): Radial fracture
with associated distal radio-ulnar joint dislocation
BIMA Radiology Crash CourseClassifications
Type of Hip Fractures
- NOF (Neck of Femur) fracture
- Intertrochanteric fracture
- Subtrochanteric fracture
- Pathological fracture
Source: https://comportho.com/anti-aging/dont-delay-hip-fracture-surgery-heres-why/
BIMA Radiology Crash CourseClassifications
Weber’s Fracture Classification (ankle fractures)
- A - below the syndesmosis
- B - trans-syndesmosis
- C - above syndesmosis/lateral malleolus
BIMA Radiology Crash CourseClassifications
Salter-Harris classification (growth plate fractures)
- (S)lipped : type I
- (A)bove : type II
- (L)ower : type III
- (T)hrough : type IV
- (R)ammed : type V
BIMA Radiology Crash CourseClinical Case 1
Clinical presentation
Right knee XR finding:
- Bob, 65M presents to the orthopaedic clinic with worsening
- Osteoarthritis
bilateral knee joint pain and stiffness. He reports these of the knees
symptoms have been present and worsened over the last bilaterally
few years, gradually reducing his ability to engage in his
favourite activities like gardening and hiking. - LOSS
- On examination, you noted a mild varus deformity of both
knees, joint crepitus as well as a limited range of motion in
both flexion and extension bilaterally.
Source: https://radiopaedia.org/cases/osteoarthritis-of-the-knee?lang=us
BIMA Radiology Crash CourseClinical Case 2
Clinical presentation XR finding:
- Annie, 64F presents with sudden onset pain around her right
knee and her walking is limited due to this. - Visible layer in
joint space
- On examination, her joint is warm, erythematous and tender - Knee joint
to palpation. aspiration
- Pseudogout
Source: https://www.orthobullets.com/basic-science/7040/pseudogout-cppd
BIMA Radiology Crash CourseClinical Case 3
Clinical presentation
Left knee XR finding:
- Andre, 36M who had 2 day history of left knee pain and
pyrexia. He presents to your A+E as he has never had knee - Normal knee XR
pain before, denies any recent trauma to the knee and is
concerned that his mobility is affected. - ABCS approach
- Septic arthritis, does
- On examination, the right knee joint is red, hot and tender to not usually present
touch. You also noted that his inflammatory markers are
raised. You then decide to order an x-ray of his knee. significant findings on
XR imaging.
Source: https://radiopaedia.org/cases/normal-knee-5?lang=us
BIMA Radiology Crash CourseClinical Case 4
Clinical presentation XR finding:
- Metal is dense on
- Derrick, 53M who works in a steel manufacturing factory was x-rays
involved with an industrial accident. While operating
machinery, a metal shard from a broken component was
forcefully propelled into his left upper arm. His colleagues - Foreign body visible
had removed the 2.5cm wide shard and bandaged the injury lateral to the
midshaft of the
as promptly as they could as part of first aid prior to sending humerus, likely in
him to hospital. the wound
- On examination, you see that the bandage is intact with no - Likely remnant of
strikethrough. He is still in pain especially on mobilising his metal shard
left arm. The extent of the damage is difficult to determine secondary to
and you decide to order an x-ray of his left humerus accident
https://radiopaedia.org/cases/foreign-body-in-arm?lang=us
BIMA Radiology Crash CourseClinical Case 5
Clinical presentation
Right hip XR finding:
- Margaret, 76F with a known background of osteoporosis
- Osteoporotic fracture
presents with difficulty weightbearing and hip pain on the of the Neck of Femur
right side following a fall as she tripped on the carpet while
mobilising from her kitchen to her bathroom. - displaced, angulated
medially
- On examination, the right hip is tender to palpation and you
notice that the right lower limb appears shorter and
externally rotated than the other. - Requires surgical
intervention.
THR vs
hemiarthroplasty
Source: https://radiopaedia.org/cases/femoral-neck-fracture-1?lang=us
BIMA Radiology Crash CourseClinical Case 6
Clinical presentation Right wrist XR finding:
- FOOSH injury
- Bryan, 55M presents to A+E with severe right wrist pain after
a fall. He reports that he was waking his dog when he tripped - Distal radius
over a loosi paving stone, and instinttively put out his right fracture with
hand to break his fall. He felt an immediate sharp pain in his dorsal
right wrist and noticed it looked deformed compared to the displacement
left. - Single view may
not be sufficient
- On examination, you noted tenderness around right distal to diagnose
radius. His right wrist is swollen and the dorsum of the wrist Frontal view Lateral view
is notably displaced dorsally. Source: https://radiopaedia.org/cases/colles-fracture-bilateral?lang=us
BIMA Radiology Crash CourseClinical Case 7
Clinical presentation
XR finding:
- Sarah, 27F arrives in A+E in significant distress. She reports - Humeral head
intense left shoulder pain and an obvious deformity of the left overlapping
upper arm. She was playing football and had fell awkwardly scapula/glenoid
on her outstretched left arm after attempting to catch the fossa
football.
- Humeral head is
dislocated
- On examination, Sarah is unable to mobilise her left arm anteriorly and
without significant pain. Her arm appears deformed, with a inferiorly
“boxy” or “square” appearance.
- Hill-Sach lesion
Source: https://radiopaedia.org/cases/anterior-shoulder-dislocation-26?lang=us
BIMA Radiology Crash CoursePitfalls and common errors
- Neglecting soft tissues
- Stress fractures/hairline fractures
- Look at previous imaging
- Tunnel vision
- Lack of clinical correlation
BIMA Radiology Crash CourseSingle Best Answer 1
You are an FY2 working in A+E. A 27M presented following
a fall off his bike at 20mph. In an attempt to break his fall,
he extended his right arm out as he landed onto the
pavement. His right arm appears deformed and he tells
you that he thinks he has broken it. What fracture does he
have?
a. Smith’s Fracture
b. Colles Fracture
c. Galeazzi Fracture
d. Monteggia Fracture
e. Barton’s Fracture
BIMA Radiology Crash CourseSingle Best Answer 1
You are an FY2 working in A+E. A 27M presented following
a fall off his bike at 20mph. In an attempt to break his fall,
he extended his right arm out as he landed onto the
pavement. His right arm appears deformed and he tells
you that he thinks he has broken it. What fracture does he
have?
a. Smith’s Fracture
b. Colles Fracture
c. Galeazzi Fracture
d. Monteggia Fracture
e. Barton’s Fracture
BIMA Radiology Crash CourseSingle Best Answer 2
You are a doctor working in orthopaedics. You have been
asked by A+E to review a 36M who presents with a
fracture of his ankle. How would you rate his fracture
under the Weber’s classification?
a. Weber’s B
b. Weber’s E
c. Weber’s A
d. Weber’s C
e. Weber’s D
Source:
ng=us://radiopaedia.org/cases/ankle-fracture-weber-c-9?la
BIMA Radiology Crash CourseSingle Best Answer 2
You are a doctor working in orthopaedics. You have been
asked by A+E to review a 36M who presents with a
fracture of his ankle. How would you rate his fracture
under the Weber’s classification?
a. Weber’s B
b. Weber’s E
c. Weber’s A
d. Weber’s C
e. Weber’s D
Source:
ng=us://radiopaedia.org/cases/ankle-fracture-weber-c-9?la
BIMA Radiology Crash CourseSingle Best Answer 3
You are working on the vascular ward. A 56M with known
T2DM and previous amputation of the 2nd left toe. He now
presents with an ulcer around the hallux, which you note
pus coming from it. An x-ray of the foot is ordered. What is
the likely diagnosis?
a. Gout
b. Osteomyelitis
c. Osteoarthritis
d. Septic arthritis
e. Normal foot
BIMA Radiology Crash CourseSingle Best Answer 3
You are working on the vascular ward. A 56M with known
T2DM and previous amputation of the 2nd left toe. He now
presents with an ulcer around the hallux, which you note
pus coming from it. An x-ray of the foot is ordered. What is
the likely diagnosis?
a. Gout
b. Osteomyelitis
c. Osteoarthritis
d. Septic arthritis
e. Normal foot
BIMA Radiology Crash CourseSingle Best Answer 4
10F with right sided hip pain and limp. Her parents tell you
that she has been in good health until about a week ago
when she had mild upper respiratory symptoms and a low
grade fever. She noted the pain start a few days after a
respiratory illness. She appears clinically well today. What
is the most likely diagnosis?
a. Slipped upper femoral epiphysis
b. Perthes Disease
c. Transient synovitis
Source: https://www.orthobullets.com/pediatrics/4030/transient-synovitis-of-hip?section=bullets
d. Septic arthritis
e. Growing pains
BIMA Radiology Crash CourseSingle Best Answer 4
10F with right sided hip pain and limp. Her parents tell you
that she has been in good health until about a week ago
when she had mild upper respiratory symptoms and a low
grade fever. She noted the pain start a few days after a
respiratory illness. She appears clinically well today. What
is the most likely diagnosis?
a. Slipped upper femoral epiphysis
b. Perthes Disease
c. Transient synovitis
Source: https://www.orthobullets.com/pediatrics/4030/transient-synovitis-of-hip?section=bullets
d. Septic arthritis
e. Growing pains
BIMA Radiology Crash CourseSingle Best Answer 5
46M construction worker fell off a ladder and landed with
his left arm outstretched. He noted a sharp pain around his
upper left arm and sees that it appears to be deformed.
X-ray imaging shows a fracture, how would you describe
this fracture?
a. Incomplete, undisplaced spiral fracture of the humerus
b. Incomplete, undisplaced transverse fracture of the humerus
c. Complete, transverse, medially angulated displacement of the
humerus
d. Complete, spiral, laterally angulated displacement of the
humerus
e. Complete, comminuted, spiral, medially angulated
displacement of the humerus
https://www.wheelessonline.com/bones/humerus/transverse-humeral-shaft-fracture/
BIMA Radiology Crash CourseSingle Best Answer 5
46M construction worker fell off a ladder and landed with
his left arm outstretched. He noted a sharp pain around his
upper left arm and sees that it appears to be deformed.
X-ray imaging shows a fracture, how would you describe
this fracture?
a. Incomplete, undisplaced spiral fracture of the humerus
b. Incomplete, undisplaced transverse fracture of the humerus
c. Complete, transverse, medially angulated displacement of
the humerus
d. Complete, spiral, laterally angulated displacement of the
humerus
e. Complete, comminuted, spiral, medially angulated
displacement of the humerus
https://www.wheelessonline.com/bones/humerus/transverse-humeral-shaft-fracture/
BIMA Radiology Crash CourseThank you
QUESTIONS?
BIMA Radiology Crash Course