Pleasecitethisarticleinpressas:ElHyaouiH,etal.Compressionoftheposteriorinterosseousnervebyadeeplipoma.JointBoneSpine (2014),doi:10.1016/j.jbspin.2014.01.016
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Images in rheumatology
Compression of the posterior interosseous nerve by a deep lipoma
Hicham El Hyaoui
a,∗, Jalal Hassoun
a, Abdelhak Garch
a, El Hassan Kassimi
b, Abellatif El Fatimi
baServicedetraumatologie-orthopédie,Pavillon32,CentrehospitalieruniversitaireIbnRochd,1,ruedesHôpitaux,Quartierdeshôpitaux,20360Casablanca,Morocco
bServicedemédecinephysiqueetderéadaptation,CentrehospitalieruniversitaireIbnRochd,1,ruedesHôpitaux,Quartierdeshôpitaux,20360Casablanca,Morocco
Fig.1. Fig.2.
A68-year-oldwoman presentedwithweaknessof herright handthathaddevelopedgraduallyovermorethan14months.She wasunabletoextendherfingers.
The physical examination showed that the metacarpopha- langeal joints couldnot beextended and that active extension produced a slightradialdeviation atthewrist (Fig.1).Asmall painlessswellingwasfeltneartherightelbow.
Electrophysiological testing indicated a lesion of the pos- terior interosseous nerve. MRI of the forearm visualized a well-demarcatedroundedmassinthedeepsofttissuesnearthe proximalradius, generatinghighsignal intensityonT1 and T2 imagesandputtingpressureontheradialnerve.Themasswasno longervisibleonthefatsaturationsequence(Fig.2).
Surgicalexplorationidentifiedawell-demarcatedmassrespon- sibleforcompressionofbothradialnervebranchesinthearcadeof
∗ Correspondingauthor.135,avenueRedaGuedira,citéDjemaa,Casablanca, Morocco.Tel.:+212618877307.
E-mailaddress:hicham.chu@gmail.com(H.ElHyaoui).
Fröhse.Thehistologicalstudyconfirmedthediagnosisofforearm lipoma.Posteriorinterosseousnervesyndromeisafairlyuncom- monformofcompressionofthemotorbranchoftheradialnerve, eitheratpenetrationoforwithinthesupinatormuscle[1].Com- pressionofthenervebyadeepparaosteallipomaisaveryrare causeofposteriorinterosseousnervesyndrome[2].
Disclosureofinterest
Theauthorsdeclarethattheyhavenoconflictsofinterestcon- cerningthisarticle.
References
[1]RoulotE.Lessyndromescanalairesautourducoudeetdel’avant-bras.Partie2: nerfradialetnerfmédian.RevRhum2007;74:365–70.
[2]HamdiMF,AlouiI,AllaguiM,etal.Paralysisofposteriorinterosseousnerve causedbyparosteallipoma.NeurolIndia2010;58:319–20.
1297-319X/$–seefrontmatter©2014PublishedbyElsevierMassonSASonbehalfoftheSociétéFrançaisedeRhumatologie.
doi:10.1016/j.jbspin.2014.01.016
