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147 Cards in this Set

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Bubbly Lesions of the Bones

FEGNOMASHIC
Fibrous Dyspaslia
Fibrous Cortical Defect

EG, Endchondroma

GCT

NOF

Osteoblastoma

Mets, Myeloma

ABC (always eccentric)

Simple bone cyst (always central)

Hyperparathyroidism, Hemophilia

Infection

Chondroblastoma
Malignant Bone Tumors by Age

Up to Age 10
Ewings
OSA
Leukemia , lymphoma
Malignant Bone Tumors by Age

10-20
OSA
Ewings
Lymphoma, Leukemia
Malignant Bone Tumors by Age

20-30
OSA
Lymphoma
Ewings
MFH
Malignant Bone Tumors by Age

Over 30
Myeloma
Mets
Lymphoma
Chondrosarcoma
MFH,Fibrosarcoma
OSA
Lytic Epiphyseal Lesions
TUMOR
GCT
EG
Chondroblastoma
Mets (rare)

INFECTION
Osteomyelitis, TB

SUBCHONDRAL CYST
Arthropathy (CPPD, OA, RA, hemophilia)

Intraosseous ganglion
Sclerotic METS
Prostate
Breast
Hodgkins

Other Primaries
Carcinoid
Medulloblastoma
Bladder
Lung
Permeative Lesions in Children
Round Cells
Infection
EG
Permeative Lesions in Adults
Mets
Myeloma
Lymphoma, Leukemia
Boney Sequestrum

(Calcified nidus in Bone Lesion)
Osteomyelitis
EG (button sequestrum)
Osteoid Osteoma
Malignant Transformation of Bone Lesions

Fibrous Dysplasia
Pagets
Osteomyelitis with draining sinus
Radiation
Bone Infarct
Olliers Disease
Maffici's Syndrome
Hereditary Osteochondromatosis
Fibrosarcoma, OSA, MFH
OSA>> chondrosarcoma, fibrosarcoma
Squamous cell carcinoma
OSA, Condrosarchoma, MFH
Chondrosarcoma
Chondrosarcoma
Chondrosarcoma
Osteonecrosis

ASEPTIC
Anemias
Steoids
Ethanol
Pancreatitis, pregnancy
Trauma
Idiopathic
Caisson disease, collagen vascular disease
Jaccouds Arthropathy

Ulnar and Volar Subluxation of the Metacarpals
SLE
RA
Scleroderma
Periarticular Osteopenia
RA
Scleroderma
Hempohilia
Osteomyelitis
New Bone Formation in Arthritis
Periostial New Bone Formation
Psoriasis
Reiter's Syndrome
Osteophytes
OA
CPPD
Acroosteolysis

PINCHFO
Psoriasis
Injury
Neuropathy
DM, Leprosy
Collagen Vascular Dx
scleroderma, Raynauds dx
Hyperparathyroidism
Familial
Hadju-Cheney
Other
PVC, snake and scorpion venom
Periostial New Bone Formation in Arthritis
Periostial New Bone Formation
Psoriasis, Reiter's
Osteophytes
OA, CPPD
Calcifications and Arthropathy
Periarticular
scleroderma
Articular
CPPD, Chondrocalcinosis
Joint Space related
Neuropathic, Osteochondritis dissecans
Chondrocalcinosis

HOGWASH
Hyperparathyroidism
Ochronosis (Alkaptonuria)
Gout
Wilsons Disease
Arthritides (any)
(P)seudogot CPPD
Hemochromatosis
Differential diagnosis of Athritides By Distribution
DISTAL
OA, Psoriasis, Reiter's Syndrome

PROXIMAL (MCP, Carpus)
RA, CPPD, Hemochromatosis, Wilson's

ULNAR STYLOID
RA
Acroosteolysis

PINCHFO
Psoriasis
Injury
Neuropathy
DM, Leprosy
Collagen Vascular Dx
scleroderma, Raynauds dx
Hyperparathyroidism
Familial
Hadju-Cheney
Other
PVC, snake and scorpion venom
New Bone Formation in Arthritis
Periostial New Bone Formation
Psoriasis, Reiter's
Osteophytes
OA, CPPD
Calcifications and Arthropathy
Periarticular
scleroderma
Articular
CPPD, Chondrocalcinosis
Joint Space related
Neuropathic, Osteochondritis dissecans
Chondrocalcinosis

HOGWASH
Hyperparathyroidism
Ochronosis (Alkaptonuria)
Gout
Wilsons Disease
Arthritides (any)
(P)seudogot CPPD
Hemochromatosis
Differential diagnosis of Athritides By Distribution
DISTAL
OA, Psoriasis, Reiter's Syndrome

PROXIMAL (MCP, Carpus)
RA, CPPD, Hemochromatosis, Wilson's

ULNAR STYLOID
RA
Monoarticular Arthritis

CHRIST
Crystal Arthropathies
Hemophilia
RA (atypical)
Infection (excluding Lyme's Dx and gonorrhea)
Synvial
PVNS, synovial osteochondromatosis
Trauma
Neuropathic Joint
COMMON
DM, Spinal Cord Injury, Myelomeningocele, Syringiomyelia, Alcohol Abuse

UNCOMMON
Syphilis (tabes dorsalis)
Congenital iddiference to pain
Neuropathies
Amyloidosis
Phemister's Triad
(TB Arthritis)
Osteoporosis
Marginal Erosions
Slow Cartilage Destruction
Still's Disease
JRA
hepatosplenomegaly
lymphadenopathy
Felty's Syndrome
RA
Splenomegaly
neutropenia
Diffuse Osteosclerosis (Dense Bones)

3Ms Proof
Mets
Myelofibrosis
Mastocytosis
Sickle cell anemia
Pyknodysosis, Paget's
Renal Osteodystrophy
Osteopetrosis
Other (hypothyroidism
Fluorosis
CREST Syndrome
calcinosis
Raynauds
esophageal dymotility
sclerodactyly
telangiectasia
Atlantoaxial Subluxation
JRA, RA
Seronegative Spondylarthropathies
SLE
Downs
Moriquio's
Trauma
OSTEOPENIA

LOCALIZED OSTEOPENIA
Dissuse osteopenia-pain, immobiliztion
Arthritis
Sudek's Atrophy Reflex Sympathetic Dystrophy
Paget's Dx (lytic phase)
Transient osteoporosis (hip)
Regional Migratory Osteoporosis
OSTEOPENIA

DIFFUSE OSTEOPENIA
Primary Osteoporosis
Secondary Osteoporosis
Endocrine Deficiencies
Nutritional Deficiencies
Medications

Osteomalacia
Vit D deficiency, GI absorbtion, Renal Dx

HYPERPARATHYROIDISM

Marrow Replacement
Malignacy (Myeloma)
Marrow Hyperplasia (hemaglobinopathy)
Lysosomal storage dx Gaucher's
Diffuse Osteosclerosis (Dense Bones)

3Ms Proof
Mets
Myelofibrosis
Mastocytosis
Sickle cell anemia
Pyknodysosis, Paget's
Renal Osteodystrophy
Osteoporosis
Other (hypothyroidism
Fluorosis
CREST Syndrome
calcinosis
Raynauds
esophageal dymotility
sclerodactyly
telangiectasia
Atlantoaxial Subluxation
JRA, RA
Seronegative Spondylarthropathies
SLE
Downs
Moriquio's
Trauma
OSTEOPENIA

LOCALIZED OSTEOPENIA
Dissuse osteopenia-pain, immobiliztion
Arthritis
Sudek's Atrophy Reflex Sympathetic Dystrophy
Paget's Dx (lytic phase)
Transient osteoporosis (hip)
Regional Migratory Osteoporosis
OSTEOPENIA

DIFFUSE OSTEOPENIA
Primary Osteoporosis
Secondary Osteoporosis
Endocrine Deficiencies
Nutritional Deficiencies
Medications

Osteomalacia
Vit D deficiency, GI absorbtion, Renal Dx

HYPERPARATHYROIDISM

Marrow Replacement
Malignacy (Myeloma)
Marrow Hyperplasia (hemaglobinopathy)
Lysosomal storage dx Gaucher's
Periostium

Asymmetric Periostial Reaction
Tumor
Infection (osteo, congenital, soft tissue)
Inflammation (psoriatic, reiter's, JRA)
Trauma (fractures)
Vascular (subperiostial hemorrhage)
Periostium

Symmetric Periostial Reaction in Adults
Vascular Insufficiency (venous > arterial)
Hypertrophic Pulmonary Osteoarthropathy (HPOA)
Pachydermoperiostitis
Fluorosis
Thyroid Acropachy
Hypertrophic Pulmonary Osteoarthropathy (HPOA)
Intrathoracic Tumor
Bronchogenic Ca
Benign fibrous tumor of the pleura
Mets
Mesothelioma

Chronic Pulmonary Infection
bronchiectasis, abcess

Other but more associated with clubbing
IBD, Cirrhosis, Cyanotic Heart Disease
SKULL

Solitary Lytic Lesion
TUMOR
Mets
Multiple Myeloma
EG
Epidermoid Hemangioma

Infection, inflammtion
Osteomyelitis
Sarcoidosis

Metabolic
Paget's
HPT

Trauma
leptomeningeal cyst
SKULL

Diffuse skull lesions
Sickle cell anemia, thalasaemia (hair on end)
HPT (salt and pepper skull)
Paget's (cotton wool)
Fibrous Dysplasia (outer table)
Tuberous sclerosis (increased density both sides)
SKULL

Multiple Lytic Lesions

POEMS
Paget's HPT
Osteomyelitis
EG
Mets, Myeloma
Sarcoidosis
SKULL

Basilar Invagination
CONGENITAL
Osteogenesis Imperfecta
Klippel Feil syndrome
Achondroplasia
Chiari Malformation
Cleidocranial dysplasia

Acquired bone softening
Pagets dx
HPT
Osteomalacia, rickets
Spine

Vertebral bodies
Abnormal density

PICTURE FRAME
Paget's (cortex too prominent)
Osteoporosis (center too lucent)
Spine

Vertebral bodies
Abnormal density

IVORY VERTEBRAL BODY
Mets
Pagets
Lymphoma
Infection
Vertebral bodies
Abnormal density

STRIATED VERTEBRAL BODY
Myeloma
Hemangioma
Osteoporosis
Pagets
Spine
Vertebral Bodies

Shape abnormalities
Fish Vertebra
Sickle cell dx
thalasemia

Squared vertebra
AS
Pagets
psoriasis, Reiters
Vertebral Outgrowths
Syndesmophytes
AS

Flowing paraspinal ossification
DISH

Small osteophytes
DJD

Large osteophytes
Psoriasis (common)
Reter's (uncommon)
Spine

Posterior Spinal Fusion
Congenital
Klippel Feil Synd

Surgical Fusion

Athritides
JRA
AS
Psoriasis
Reiters
Vertebral Body lesion
Mets
Myeloma
Lymphoma
BENIGN
EG
GCT
hemangioma
Posterior Element Vertebral Lesions
Osteoid osteoma
Osteoblastoma
ABC
Solitary Vertebral Lesions
A HOG
ABC
Hemangioma
Oseoblastoma
GCT
Posterior Vertebral Scalloping
INCREASED I(NTRASPINAL PRESSURE
Spinal canal tumours
Syrinx
Communicationg hydrocephalus

DURAL ECTASIA
Neurofibromatosis
Marfan Synd
Ehlers-Danlos Synd

CONGENITAL
Achondroplasia
Muchopolysacharidoses
Osteogenis Imperfecta

BONE RESORBTION
Acromegaly
Anterior Vertebral Scalloping
Aortic Aneurysm
Lymphadenopathy
TB spondylitis
Anterior Vertebral Beak
Moriquio (central beak)
(all others inf. beak)
Hurlers
Achondroplasia
Cretinism
Dowms
Platysponyly
DIFFUSE
Thanotropic Dwarf
Osteogenesis Imperfecta

Solitary or Multifocal
Leukemia
EG
Met/myeloma
Sickle cell disease
Pelvis
Protrusio Acetabuli
RA
Pagets
Osteomalacia, Rickets
Trauma
AS
Sacroiliitis
BILATERAL SYMMETRIC
AS
Enteropathic
Psoriatic
HPT

BILATERAL ASYMMETRIC
Reter's
Psoriasis

UNILATERAL
Infection
DJD
trauma
Lytic Lesions of the Sacrum
Mets
Chordoma
Plasmycytoma
Chondrosarcoma
GCT
Lytic lesion of the Ilium
Fibrous Dysplasia
ABC
UBC
Hemophilic Tumor

MALIGNANT Lesions
Mets
Lymphoma
Plasmycytoma
Chondrosarcoma
Ewings
Widened Pubic Symphyis
CONGENITAL
Bladder Extrophy
Epispadius
Cleidocranial Dysplasia

BONE RESORPTION / DESRUCTION
Pregnancy
Osteitis Pubis
Infection
Mets
HPT
Lower Extremity

Erlenmyer Flask Deformity

CHONG
Craniometaphaseal dysplasias
Hemaglobinopathies
Thalasemia
Sickle Cell (often with AVM)
Osteopetrosis
Nieman Pick disease
Gaucher's
Gracile Bones

NIMROD
Nerofibromatosis
Immobilization
Muscular dystrophies
JRA
Osteogenesis imperfecta
Dysplasia (Marfan, homocystinurea)
Femoral Head AVN

ASEPTIC LEG
Alcoholism
Sickle Cell
Exogenous steroids
Pancreatitis
Trauma SCFE/ # dislocation
Infection
Caisson Disease
Legg-Calve Perthe
Epiphyseal dyslplasia
Gaucher's
Medial Tibial Spur
Osteochondroma
Blount Disease
Turner Syndrome
Post traumatic lesion
Tibial Diaphyseal Cortical Lesion
Adamantinoma
Ossifying Fibroma
Fibrous Dysplasia
EG
Mets
Heal Pad Thickness

MAD COP
Criteria > 25 mm
Myxedema (hypothyrodism)
Acromegaly
Dilantin
Callus
Obesity
Peripheral edema
Lytic Lesion of the Finger
Enchondroma
Glomus tumor
Foreign body reaction
Mets (lung)
Sarcoid
Infection
Errosive Arthropathy
Radial Hypoplasia
VACTERL
Thrombocytopenia absent radius
Holt Oram
Fanconi's anemia
Short 4th/5th Metacarpal
Pseudohypoparathyroidism
Pseudopseudohypoparathyroidism
Chromasomal Anomalies (Turner's, Klinefelter's)
Madelung Deformity

Premature Fusion of the ulnar aspect of the radial epiphysis resulting in:
Ulnar angulation of the distal radius
Decreased carpal angle
Dorsal subluxation of the ulna
Unilateral or bilateral
Madelung Deformity

HIT DOG
Hurler Synd
Infection
Trauma
Dyschondosteosis
Chromasomal XO
Missing Distal Clavicle
Erossive RA
HPT
post traumatic osteolysis
Infection
Mets/ Myeloma
Absent Cleidocarial Dysplasia
Pyknodysostosis
High Riding Shoulder
RA
CPPD
Rotator Cuff Tear
Soft Tissue Cacification
TIC MTV
TUMOR
Tumoral Calcinosis
Soft tissue tumor

Inflammation, Infection
Dermatomyositis
Scleroderma
Parasites
Leprosy

Congenital
Ehrlers-Danlos
Myositis Ossificans Progressiva

Metabolic
HPT
CPPD
Calcium hydroxyapetit

Tauma
Myositis ossificans
Burns
Hematoma

Vascular
Calcification
Soft tissue Masses
Tumor
MFH
Fatty tumor
lipoma, liposarcoma
Vascular Tumor hemangioma
Nerve Tumors
Schanoma, Neurofibroma
Mets
Burns
Hematoma
Muscle Rhabdomyosarcoma, leiomyosarcoma
Aneurysm
Abscess
Lucent bone lesions in the Medulla, Well defined, Marginal Sclerosis, No expansion
Geode

Healing benign or malignant bone lesion

Brodie's Abcess

Benigh Bone Neoplasms
UBC, Enchondroma, Chondroblastoma

Fibrous dysplasia
Lucent bone lesions in the Medulla, Well defined, NO marginal Sclerosis, No expansion
Mets
Myeloma
EG
Browns Tumor
Benigh Bone Neoplasms
UBC, Enchondroma
Lucent bone lesions in the Medulla-Ill Defined
Mets
Myeloma
Osteomyelitis
Lymphoma of the bone
Long Bone sarcoma
Osteosarcoma
Ewings
Central Chondrosarcoma
Fibrosarcoma , MFH
Lucent bone lesions in the Medulla, Well defined, Eccentric Expansion
GCT
ABC
Enchondroma
NOF
Chodromyxoid Fibroma
Lucent bone lesions - Grossly Expansile
Malignant Bone Neoplasms
Mets
Plasmacytoma
Central chondrosarcoma/lymphoma
Telangiectasia Osteosarcoma
Lucent bone lesions - Grossly Expansile
Benign Bone Neoplasms
ABC
GCT
Enchondroma
Lucent bone lesions - Grossly Expansile
Non Neoplastic
Fibrous Dysplasia
Hemophilic Tumor
Brown's Tumor
Hydatid
Pseudoarthrosis
non-union of a fracture
Congenital (in the middle to lower third of the fibula and tibia)
Neurofibromatosis
Osteogenesis imperfecta
Cleidocranial dysplasia
Fibrous dysplasia
Ankylosing Spondylitis
Irregular or Stippled Epiphysis
Normal (distal femur)
AVNCongenital Hypothyroidism
Multiple Epiphyseal dysplasia
Trisomy 18 21
Prenatal infections
Warfarin Embyopathy
Zellwegers Synd (cerebrohepatorenal syn)
Fetal Alcohol Syndrome
Solitary Metaphyseal Radiolucent Band
Any severe ilness
Metaphyseal #
Healing Rickets
Leukemia, Lymphoma
Congenital Infections
Scurvy
Alternating radiolucent and Dense Metaphyseal bands
Growth arrest or park's lines
Rickets treated
Osteopetrosis
Chemotherapy
Chronic anemia SC/thalasemia
Treated Leukemia
Solitary Dense Metaphyseal Band
Lead Poisining
(dense line in the proximal femur delineates this from other poisining including biemuth, arsenic, fluoride
Congenital hypothyroidism
Osteopetrosis
Hypevitaminosis D
Dense vertical Metaphyseal Lines
Congenital Rubella (cellary stalk)
Osteopathia striata
Hypophosphotasia
Fraying of the Metaphyses
Rickets
Hypophosphotasia
Chronic Stress in the wrist of young gymnasts
Copper deficiency
Cupping of Metaphyses
Rickets
Trauma
Bone Dysplasias eg achondroplasia
Scurvy
Erosions of the Medial Metaphyses of the Proximal Humerus
Normal
Leukemia
Metastatic neuroblastoma
Gaucher
HPT
RA
Erosions of the Outer End of the Clavicle
RA
HPT
Myeloma
Meys
post traumatic
Cleidocranial Dysplasia
Pyknodysostosis
Focal Rib Lesion
METS
Adult male lung, kidney prostae

Adult female breast

Primary Malignant
Myeloma/plasmacytoma
Chondrosarcoma
Ewings child
Askin tumor of intercostal nerve

Benign
Osteochondroma
Enchondroma
LCH

Non neoplastic
Healed rib #
Fibrous dysplasia
Pagets Disease
Brown's Tumor
Osteomyelitis
Rib Notching Inferior Surface
ARTERIAL
Coarctation of the aorta
Aortic thrombosis
Subclavian Obstruction
pulmonary Oligemia

VENOUS
SVC obstruction

Arteriovenous
Pulmonary AVM
Chest wall AVM

Neurogenic
Neurofibromatosis
Rib Notching Superir Surface
CONNECTIVE TISSUE DISEASE
RA, SLE, Scleroderma, Sjorgen

METABOLIC
HPT

MISC
Neurofibromatosis, osteogenesis imperfecta, progeria
Wide or Thick Ribs
Chronic Anemias
Fibrous Dysplasia
Paget's disease
Healed # with callus
Achondroplasia
Carpal Fusion
ISOLATED
triquetral lunate 1% of pop.
Capitate hamate
trapezium trapezoid

Syndrome related
Turner
Aperts
Holt Oram

Acquired
RA and JRA
Pyogenic Arthritis
Chronic TB arthritis
Post traumatic or sx
Arachnodactyly

Elongated and slender tubular bones of the hands and feet
Marfans Syndrome
Homocystinuria
Distal Phalangeal Destruction

Resorbtion of the Tuft
Scleroderma
Raynauds Dx
Psoraitic arthropathy
Neuropathic Dxs (DM, Leprosy, syringiomyelia)
Thermal injuries
Trauma
HPT
Distal Phalangeal Destruction

Resorption of the Mid-Portion
PVC
Acro-osteolysis of Hadju Cheney
HPT
Distal Phalangeal Destruction

Periarticular
(erosion at the distal interphlangeal joint)
Psoriasis
Erosive arthropathies
HPT
Thermal Injuries
Scleroderma
Distal Phalangeal Destruction

Poorly Defined Lytic Lesions
Osteomylitis
mets
Myeloma
ABC rare
GCT
Leprosy
Distal Phalangeal Destruction

Well defines Lytic Lesion
Implantation dermoid or epidermoid cyst
Enchondroma
glomus tumor
osteoid osteoma
Fibrous dysplasia
Fluid - fluid levels in Bone Lesions on CT and MRI
BENIGN
ABC
Chondroblastoma
GCT
UBC

MALIGNAT
Telangiectatic Osteosarcoma
MFH
Any necrotic Bone Tumor
Increased Uptake on Bone Scans
Mets
Joint Dx
traumatic #s
Post SX jnt replacement
Padgets
Superscan (absent renal outline)
Metabolic bone disease (same as superscan)
Infection (increased uptake in vascular and blood pool)
Photopenic Areas on Bone Scans
Artefacts (coins, buckles)
Avascular Lesions (cysts)
Myeloma (may show increased uptake)
Leukemia (may show increased uptake)
Radiotherapy fields
Spina Bifida
Advanced Ca (breast possibly due to breast Ca)
Abnormal Bone Scan with Normal or Minimal Radiographic Changes
EARLY DISEASE
Mets, Pagets, Osteomyelitis AVN Primary HPT, Osteodystrophy (pulmonary/ renal)
Scoliosis

IDIOPATHIC
Infantile ( up to age 4)>90% thoracic and concave to the right > boys resolve spontaneously

Juvenile (4-9) > girls almost always progressive

Adolescent (after age 10)
> females. Majority concave to the left.
Scoliosis

CONGENITAL
NEUROPATHIC
tethered cord, syryngiomyelia, Chiari malformation, disteatomyelia, myelomeningocele

NEUROMUSCULAR DISEASE
myelomeningocele, muscular dystrophy, cerebral palsy

MESODERMAL AND NEUROECTODERMAL DISEASES
Neurofibromatosis, Marfans Synd, Homocystinuria

POST RADIOTHERAPY

LEG LENGTH DISPARITY

PAINFUL SCOLIOSIS
Osteoid osteoma, osteoblastoma, intraspinal tumor, Infection
Erosion, Destruction or Absence of a Pedicle
Mets, Myeloma
Neurofibroma
TB
Benign bone tumor
Congenital Absence
Solitary Dense Pedicle
Osteoblastic Met
Osteoid Osteoma
Osteoblastoma
Secondary to spondlolysis
Secondary to congenitally absent or hypoplastic controlateral posterior elements
intervertebral disc Calcification
Degenerative Spodylysis
Alkaptonuria
CPPD
Ankylosing Spondylitis
JRA
Hemochromatosis
DISH (diffuse idiopathix skeletal hyperostosis)
Gout
Idiopathic
Following Spinal Fusion
Widened Interpeduncular Distance
Myelomeningocele
Intraspinal Mass
Diastematomyelia
Intraspinal Masses

EXTRADURAL MASSES
Proloapsed or sequestrated intervertebral disc
Mets, myeloma, lymphoma deposits
Neurofibroma and Ganglioneuroma
Menigioma
hematoma
Abscess
Arachnoid cyst (uncommon)
Intraspinal Masses

INTRADURAL MASSES
Menigioma
Neurofibroma
Mets
Subdural Empyema
Intraspinal Masses

INTRAMEDULLARY MASS
Ependymoma
Astrocytoma
Dermoid (lipoma, teratoma)
Infarct
Hematoma
Monoarthritis
Trauma
Osteoarthritis
Crystal induced arthritis
RA
TB
PVNS (knee most common)
sympathetic
neuropathic arthropathy
Non Septic Monoarthritis
Gout Synovial Chondromatosis
Amyloidosis
PVNS
Neuropathic Shoulder
Milwaukee Shoulder (Ca hydroxyapetie/ca pyrophosphate deposition
Rapid destructive Arthritis of the Hip
Arthritis with Osteoporosis
RA
JRA
SLE
Pyogenic Arthritis
Reters Synd.(acute phase)
Scleroderma
Hemophilia
Arthritis with Preservation of Bone Density
Osteoarthritis
CPPD
Gout
Psoriatic Arthritis
Ankylosing Spondylitis
Reiter's Synd.(chronic or recurrent dx)
Neuropathic Arthropathy
PVNS
Neuropathic A
Arthritis with a Periostial Reaction
JRA
Reiter's
Pyogenic arthritis
Psoriatic
RA (in less than 5%)
HPOA
Hemophilia
Arthritis with Preserved or Widened Joint Space
Early infective or inflammatory arthritis
Psoriatic Arthropathy
Acromegaly
Gout
PVNS
Arthritis with Soft Tissue Nodules
GOUT
RA
PVNS
Amyloid
Sarcoid
Arthritis Mutilans
(pencil in cup)
RA
JRA
Psoriatic
Diabetes
Leprosy
Neuropathic Arthropathy
Reiter's (in feet)
Diffuse Terminal Phalangeal Sclerosis
Normal Variant 10%
RA
Scleroderma
SLE
Sarcoid
Calcified Loose Body
Detached Osteophyte
Osteochondral fracture
Neuropathic arthropathy
Calcification of Articular (hyaline) cartilage also called Chondrocalcinosis
CPDD
HPT
Hemochromatosis
Alkaptonuria
Acromegaly
Gout
Wilson's Dx
Sacroiliitis

BILATERAL SYMMETRICAL

(changes initially to the lower and middle third of the joint and iliac side is more affected)
Ank Spond
IBD
HPT
Paraplegia
Psoriatic
Osteitis Condensans ilii (triangular segment on the inferior aspect of the iliac side of the joint multipareous young women)
Sacroiliitis

BILATERAL ASYMMETRICAL
reter's
Psoriasis
RA rare
Gout
Osteoarthriris
Sacroiliitis

UNILATERAL
Infection
Protrusio Acetabuli
RA
Osteoporosis
Marfans
Osteomalacia and Rickets
Pagets
Ank spond
Widening of the Symphysis Pubis

Acquired

> 10mm in newborn
> 9mm at age 3
> 8 mm at 7 years
Pregnancy
Trauma
Osteitis Pubis
Osteolytic mets
Infection
Ank Spond RA early disease
HPT
Widening of the Symphysis Pubis

Congenital (normal Ossification)
Extrophy of Bladder
Epispadius
Hypospadius
Prune Belly
Widening of the Symphysis Pubis

Congenital (poorly ossified cartilage)
Achondrogenesis
Chondroplasia Punctata
Fusion or Bridging of the Symphysis Pubis
Post traumatic
post infectious
Osteitis pubis
OA
Ank Spond
Alkaptonuria
Fluorosis
Femoral Head and Neck Anomalies

Coxa Magna
(remodlled femoral head becomes wider and flatter)
DDH
Perthes Dx
Septic Arthritis
Femoral Head and Neck Anomalies

Coxa Plana
(flattened femoral head)
AVN

ASEPTIC DD
Femoral Head and Neck Anomalies

Coxa Valga
IDIOPATHIC

DEVELOPMENTAL
Neuromauscular
Abductor muscle weakness
Diaphyseal Aclasia (multiple metaphyseal exostoses point away from the joint cartilagenous cap may show punctate calcification)

INFLAMMATORY
JRA
Poliomyelitis

TRAUMATIC
femoral neck #
Femoral Head and Neck Anomalies

Coxa Vara (to midline)
DEVELOPMENTAL
Neuromuscular Dis.
DDH
Fibrous Dysplasia

INFLAMMATORY
RA

VASCULAR
Perthes Dx
AVN

METABOLIC
Renal Osteodystrophy
Rickets
Pagets Dx
Erosion (Enlargement) of the Intercondylar notch of the Distal Femur
JRA
Hemophilia
Psoriatic Arthritis
TB arthritis
RA
Plantar Calcaneal Spur
Idiopathic
DISH
Ank Spond
Psoriatic
reter's
RA
Intrameniscal Signal Changes on Knee MRI
Myxoid Degeneration
Meniscal Tear
Post operative scar tissue