Foot & Ankle Surgery: common problems – current therapies Zurich, Sep 4, 2014 > Ankle arthrosis – from osteotomy to total ankle replacement Fabian Krause, MD Department of Orthopaedic Surgery Inselspital, University of Berne Switzerland « Foot & Ankle Surgery » 04. Sept. 2014
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Ankle arthrosis – from osteotomy to & Ankle...Calcaneal Osteotomy > realignment of the varus hindfoot by calcaneal osteotomies substantially contributes to normalize ankle contact
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Foot & Ankle Surgery: commonproblems – current therapies
Zurich, Sep 4, 2014
> Ankle arthrosis – from osteotomy to total ankle replacement
Fabian Krause, MDDepartment of Orthopaedic SurgeryInselspital, University of BerneSwitzerland
« Foot & Ankle Surgery »
04. Sept. 2014
arthroscopy; debridement
osteochondralresurfacing;distractionarthroplasty
correctiveosteotomy; realignmentsurgery
fusion; TAR
Ankle arthrosis – from osteotomy to total ankle replacement
Foot & Ankle Surgery: common problems – current therapies, Zurich, Sep 4, 2014
> ankle arthrosis
Introduction
« Foot & Ankle Surgery »
04. Sept. 2014
Introduction
> asymmetric / focal arthrosis
— recently more effort to restore neutral articular alignment=> early and aggressive realignment surgery to prevent or delay ankle arthrosis
Ankle arthrosis – from osteotomy to total ankle replacement
Foot & Ankle Surgery: common problems – current therapies, Zurich, Sep 4, 2014
« Foot & Ankle Surgery »
04. Sept. 2014
Introduction > Indications for realignment surgery
— existing or impending asymmetric / focal ankle arthrosis– congenital malalignment distal tibia– posttraumatic malunion after distal tibia-, malleolar-, and talus
fractures– hindfoot deformity, e.g. cavovarus / planovalgus deformity
— > 50% preserved articular surface
— isolated osteochondral lesion— alignment for TAR and ankle arthrodesis
Ankle arthrosis – from osteotomy to total ankle replacement
Foot & Ankle Surgery: common problems – current therapies, Zurich, Sep 4, 2014
« Foot & Ankle Surgery »
04. Sept. 2014
Asymmetric ankle arthrosis
> hindfoot deformity (varus / valgus) leads to increased ankle joint pressure and potentially to asymmetric arthrosis in the long-term1,2
> malalignment— isolated at single structural level (e.g. supramalleolar) — part of complex deformity with multiple structural levels involved
(e.g. cavovarus deformity)
Foot & Ankle Surgery: common problems – current therapies, Zurich, Sep 4, 2014
Ankle arthrosis – from osteotomy to total ankle replacement
1Krause F. et al. J Bone Joint Surg Br 2007;89(12):1660–52Stufkens SA, et al. J Bone Joint Surg Br 2011;93-B:1232-9
« Foot & Ankle Surgery »
04. Sept. 2014
Introduction
> Supramalleolar osteotomies for intraarticularmalalignment (varus / valgus joint line)
> Disadvantages— Correction < 10° (fibula restriction)— graft morbidity— potentially load increase in the medial ankle
by tensioning of the medial extrinsic tendons1
1Takakura Y et al. J. Bone Joint Surg. 1998;80-A:213 – 218
Ankle arthrosis – from osteotomy to total ankle replacement
Foot & Ankle Surgery: common problems – current therapies, Zurich, Sep 4, 2014
« Foot & Ankle Surgery »
04. Sept. 2014
Medial opening supramalleolar osteotomy1
> time to union, no delayed or nonunion?> AOFAS score improved significantly from 52 (range 22 to 83)
to 73 (range 27 to 100)> VAS pain decreased from 4.4 (range 0-8) to 2.6 (range 0-7)> ROM increase 5° on average> progression to end-stage arthrosis at average follow-up of 45
(range 15 to 88) months in 3/35 pts.> implant removal in 10/35pts
1Pagenstert GI, et al. Clin Orthop Relat Res 2007;462:156–68.
Ankle arthrosis – from osteotomy to total ankle replacement
Foot & Ankle Surgery: common problems – current therapies, Zurich, Sep 4, 2014