• Like

Extra-Ossoues TaloTarsal Stabilization Leads to Normalized Navicular Position.

Uploaded on

Partial talotarsal dislocation may lead to a drop in the height of the navicular bone. This leads to a loss of arch height, more commonly known as fallen arches. This could be considered a cosmetic …

Partial talotarsal dislocation may lead to a drop in the height of the navicular bone. This leads to a loss of arch height, more commonly known as fallen arches. This could be considered a cosmetic concern but more importantly it is a structural deformity that leads to increased strain on the support structures of the medial column of the foot.

Learn more at www.GraMedica.com.

  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
    Be the first to like this
No Downloads


Total Views
On Slideshare
From Embeds
Number of Embeds



Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

    No notes for slide


  • 1. Radiographic Evaluation of Navicular Position in the Sagittal Plane –Correction Following an Extra-Osseous TaloTarsal Stabilization Procedure Journal of Foot and Ankle Surgery, Volume 50, Issue 5 Pages 551-557, September 2011 Michael E. Graham, DPM, FACFAS, Nikhil T. Jawrani, MS, Avanthi Chikka, MSPurpose Lateral Weightbearing Radiographs:The focus of this study was to radiographically TaloTarsal Mechanismdetermine the effect of the HyProCure® extra-osseous talotarsal fixation device on navicularposition. It was hypothesized that weightbearingnavicular height would increase significantlyfollowing the placement of HyProCure® comparedto the preoperative values due to stabilization oftalotarsal dislocation. (A): Normal TTM (B): Abnormal TTM (C): w/HyProCure®Background ResultsAnteriomedial talar dislocation (partial) on the  The mean preoperative true navicular to cuboidtarsal mechanism during weightbearing places distance was 19 ± 6 mm as compared to a meanexcessive force anteriomedially. As a result of the postoperative value of 24 ± 5 mm.excessive, abnormal force, the navicular maycompensate by “dropping”. Navicular drop leads to  The mean pre- and postoperative normalizeda loss of arch height and signifies a pathologic force navicular to cuboid distances were 0.098 ± 0.029acting on the medial column of the foot as well as and 0.125 ± 0.027, respectively (± 1 SD).its associated supporting structures such as the  The postoperative increase in the true andposterior tibial tendon, spring ligament, and the normalized navicular to cuboid distance wasmedial band of the plantar fascia. External measures statistically significant (p < .001).have significant limitations in regards tomaintaining navicular height. Clinical Significance & Conclusions  Not all patients with anteriomedial dislocationMethods (partial) of the talus on the calcaneus exhibited Radiographs were analyzed of 61 adult patients navicular drop. (86 feet) who underwent talotarsal fixation with  However, every patient with navicular drop HyProCure® without adjunctive hindfoot or exhibited anteriomedial dislocation of the talus midfoot soft tissue or osseous procedures. on the calcaneus. The distance of the navicular with respect to the  Navicular height significantly increased by an cuboid was measured on the pre- and average of 26% following hindfoot stabilization postoperative weightbearing lateral radiographs. with HyProCure®. Foot length was factored to normalize the  HyProCure® was effective in improving the navicular to cuboid distance. anatomic alignment of the talonavicular joint. Postoperative radiographs were taken at an  This should lead to a decrease in force placed on average follow-up of 17 days. the medial column of the foot and therefore a decreae in strain on the supporting structures. Talotarsal joint stabilization with HyProCure® lead to an average 26% increase in navicular height. Additional Scientific Papers on HyProCure® are available. Visit the Library section on: www.GraMedica.com