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Table 3 Comparison of MRI and CT data

From: Comparison of magnetic resonance imaging and computed tomography for bone assessment of neurogenic heterotopic ossification of the hip: a preliminary study

No of patient and modality

Location

Circum-ferential extension

Implantation

Fragmentation

Pseud-arthrosis

Density

Borders

Relation to the joint capsule

Joint space

Bone minera-lization

Fracture /osteo-necrosis

1

CT

P

No

ABI GT

Multifragmentary

Yes

Homogeneous

Ill-defined

Contact

Normal

M3

No/No

 

MRI

P

No

ABI GT

Multifragmentary

Yes

Homogeneous

Sharp

No involvment

Normal

M2

No/No

2

CT

A P I

Yes

ABI IlPB LT

Multifragmentary

Yes

Homogeneous

Ill-defined

Contact

Normal

M2

No/No

 

MRI

A P I

Yes

ABI IlPB LT

Multifragmentary

Yes

Homogeneous

Sharp

Contact

Normal

M3

No/No

3

CT

A

No

ABI

GT FD

Multifragmentary

Yes

Heterogeneous

Sharp

Contact

Normal

M3

No/Yes

 

MRI

A

No

ABI GSI

GT LT FD

Multifragmentary

Yes

Heterogeneous

Sharp

Contact

Normal

M3

No/Yes

4

CT

A I

No

ABI IsPB GT

Monofragmentary

No

Homogeneous

Ill-defined

Contact

Narrowed

M3

No/No

 

MRI

A

No

ABI IsPB LT FD

Monofragmentary

No

Homogeneous

Sharp

Contact

Narrowed

M3

No/No

5

CT

A

No

ABI IlPB

GT LT FD

Multifragmentary

Yes

Heterogeneous

Sharp

No involvment

Normal

M3

No/No

 

MRI

A

No

ABI IlPB

GT FD

Multifragmentary

Yes

Heterogeneous

Sharp

No involvment

Normal

M2

No/No

6

CT

A I

No

IsPB FD

Multifragmentary

Yes

Homogeneous

Sharp

Contact

Normal

M2

No/No

 

MRI

A

No

IsPB FD

Monofragmentary

No

Heterogeneous

Ill-defined

No involvment

Normal

M2

No/No

7

CT

A

No

ABI LT FD

Multifragmentary

Yes

Homogeneous

Sharp

Contact

Normal

M2

No/No

 

MRI

A

No

ABI FD

Multifragmentary

Yes

Homogeneous

Sharp

Contact

Normal

M2

No/No

8

CT

A P E I

Yes

ABI GSI IlPB

LT FD

Multifragmentary

No

Heterogeneous

Sharp

Contact

Normal

M4

No/No

 

MRI

A P E I

Yes

ABI GSI IlPB

LT FD

Multifragmentary

No

Heterogeneous

Sharp

Contact

Normal

M4

No/No

9

CT

A

No

ABI IlPB LT FD

Multifragmentary

No

Heterogeneous

Ill-defined

No involvment

Normal

M1

No/No

 

MRI

A

No

ABI IlPB LT

Multifragmentary

No

Homogeneous

Ill-defined

No involvment

Normal

M1

No/No

  1. Discordances between CT and MRI reports are exposed in bold and italic
  2. A anterior, P posterior, E external, I inferior, ABI anterior border of the ilium, GSI gluteal surface of the ilium, IlPB ilio-pubic branch, IsPB ischio-pubic branch, GT greater trochanter, LT lesser trochanter, FD femoral diaphysis