Osteonecrosis De La Cabeza Femoral

Avascular sis of the

OsteonecroFemoral Head

Treated
larized

with
Iliac

a VascuBone Graft: Results

Preliminary and Follow-up Radiography Imaging1
Ronald Henny Wybren Jan Wvan PWassenaa, Verburg, K Taconis, der Eijken, MD MD, PhD MD, PhD MD

with and MR

Treatment of avascular necrosis (AVN) of the femoral head with a vascularized iliac bone graft was studied in nine patients(12 hips). The condition of the femoral head was classified radiographically before and after surgery. Magnetic resonance (MR) imaging was performed to demonstrate the extent and signal
intensitycharacteristics of the area progression of AVN and to assess in six the viability of the

graft.
though

The

radiologic

results
showed

were

correlated

with
of disease

theclinical

findings.
seven

Alof the

radiography

patients,

nine patients demonstrated clinical improvement. The MR imaging results correlated better with the clinical findings: MR imagingdemonstrated progression of AVN in only two patients (two hips) and no progression or reduced necrosis in six patients (nine hips). Nine of the 1 1 grafts (eight patients) evaluated with MR imagingappeared viable after a mean follow-up of 50 months. MR imaging appears useful in assessing marrow changes and graft viability after treatment of AVN of the femoral head with a vascularized iliac bone graft.Abbreviation: Index terms:

AVN Bones. studies 1996; Departments Amsterdam, assembly. reprint

= avascular

necrosis 443.455
#{149} Femur,

grafts.

necrosis,

443.44

.

i-lip.necrosis,

443.4-I

Magnetic

resonance

(MR).

compar.ttive RadioGraphics
I

16:585-594 of Radiology The Netherlands. March to R.P.W.. 10, (R.P.W., Recipient 1995: Department W.K.T.)of

From

the

and

Orthopaedic of Merit
7

Surgery award and

(H.V.. tir

J.W.v.d.E.), a scientific 24; Rijksstratweg

Onze exhibit accepted

Lieve at the September I , I 26()...