Contribution of First-Tarsometatarsal Joint Fusion to Deformity Correction in the Treatment of Adult-Acquired Flatfoot Deformity

Background: Severe adult-acquired flatfoot deformity (AAFD) is often associated with painful medial column collapse at the naviculocuneiform (NC) joint. However, many surgeons surgically correct the deformity without directly addressing this joint. The purpose of this study was to examine the role o...

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Main Authors: Jonathan Day MS, Matthew S. Conti MD, Nicholas Williams MPH, Scott J. Ellis MD, Jonathan T. Deland MD, Elizabeth A. Cody MD
Format: Article
Language:English
Published: SAGE Publishing 2020-08-01
Series:Foot & Ankle Orthopaedics
Online Access:https://doi.org/10.1177/2473011420927321
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author Jonathan Day MS
Matthew S. Conti MD
Nicholas Williams MPH
Scott J. Ellis MD
Jonathan T. Deland MD
Elizabeth A. Cody MD
author_facet Jonathan Day MS
Matthew S. Conti MD
Nicholas Williams MPH
Scott J. Ellis MD
Jonathan T. Deland MD
Elizabeth A. Cody MD
author_sort Jonathan Day MS
collection DOAJ
description Background: Severe adult-acquired flatfoot deformity (AAFD) is often associated with painful medial column collapse at the naviculocuneiform (NC) joint. However, many surgeons surgically correct the deformity without directly addressing this joint. The purpose of this study was to examine the role of first-tarsometatarsal (TMT) fusion combined with subtalar fusion in correcting deformity at the NC joint. Methods: We retrospectively analyzed 40 patients (41 feet) who underwent first-TMT and subtalar (ST) fusion as part of a flatfoot reconstructive procedure. We assessed 6 radiographic parameters both preoperatively and at a minimum of 6 months postoperatively, including talonavicular (TN) coverage angle, lateral talo–first metatarsal angle, lateral talocalcaneal angle, calcaneal pitch, hindfoot moment arm, and a newly defined navicular-cuneiform incongruency angle (NCIA). Patient-Reported Outcomes Measurement Information System (PROMIS) clinical outcomes were assessed preoperatively and at a minimum 1-year follow-up. Results: The NCIA demonstrated excellent interobserver reliability, with no significant change between pre- and postoperative measurements. All other radiographic parameters, except calcaneal pitch, demonstrated statistically significant improvement postoperatively ( P < .01). Overall, patients had statistically significant improvement in all PROMIS domains ( P < .01), except for depression. Worsening NC deformity was not associated with worse patient-reported outcomes. Conclusions: Our data suggest that when addressing painful collapse of the medial arch in patients with AAFD, fusion of the first-TMT joint in combination with other procedures leads to acceptable radiographic and clinical outcomes. There was no change in deformity at the NC joint in our patient cohort at short-term follow-up, and patients achieved significant improvement in multiple PROMIS domains. Although TMT fusion had no effect on NC deformity, residual or worsening NC deformity did not significantly affect clinical outcomes. In addition, the NCIA was found to be a reliable radiographic parameter to assess NC deformity in the presence of talonavicular and/or first-TMT fusion. Level of Evidence: Level III, retrospective comparative study.
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spelling doaj.art-01fea00996be4c5c91a751afc73cbfea2022-12-22T00:23:45ZengSAGE PublishingFoot & Ankle Orthopaedics2473-01142020-08-01510.1177/2473011420927321Contribution of First-Tarsometatarsal Joint Fusion to Deformity Correction in the Treatment of Adult-Acquired Flatfoot DeformityJonathan Day MS0Matthew S. Conti MD1Nicholas Williams MPH2Scott J. Ellis MD3Jonathan T. Deland MD4Elizabeth A. Cody MD5 , New York, NY, USA , New York, NY, USA , New York, NY, USA , New York, NY, USA , New York, NY, USA , New York, NY, USABackground: Severe adult-acquired flatfoot deformity (AAFD) is often associated with painful medial column collapse at the naviculocuneiform (NC) joint. However, many surgeons surgically correct the deformity without directly addressing this joint. The purpose of this study was to examine the role of first-tarsometatarsal (TMT) fusion combined with subtalar fusion in correcting deformity at the NC joint. Methods: We retrospectively analyzed 40 patients (41 feet) who underwent first-TMT and subtalar (ST) fusion as part of a flatfoot reconstructive procedure. We assessed 6 radiographic parameters both preoperatively and at a minimum of 6 months postoperatively, including talonavicular (TN) coverage angle, lateral talo–first metatarsal angle, lateral talocalcaneal angle, calcaneal pitch, hindfoot moment arm, and a newly defined navicular-cuneiform incongruency angle (NCIA). Patient-Reported Outcomes Measurement Information System (PROMIS) clinical outcomes were assessed preoperatively and at a minimum 1-year follow-up. Results: The NCIA demonstrated excellent interobserver reliability, with no significant change between pre- and postoperative measurements. All other radiographic parameters, except calcaneal pitch, demonstrated statistically significant improvement postoperatively ( P < .01). Overall, patients had statistically significant improvement in all PROMIS domains ( P < .01), except for depression. Worsening NC deformity was not associated with worse patient-reported outcomes. Conclusions: Our data suggest that when addressing painful collapse of the medial arch in patients with AAFD, fusion of the first-TMT joint in combination with other procedures leads to acceptable radiographic and clinical outcomes. There was no change in deformity at the NC joint in our patient cohort at short-term follow-up, and patients achieved significant improvement in multiple PROMIS domains. Although TMT fusion had no effect on NC deformity, residual or worsening NC deformity did not significantly affect clinical outcomes. In addition, the NCIA was found to be a reliable radiographic parameter to assess NC deformity in the presence of talonavicular and/or first-TMT fusion. Level of Evidence: Level III, retrospective comparative study.https://doi.org/10.1177/2473011420927321
spellingShingle Jonathan Day MS
Matthew S. Conti MD
Nicholas Williams MPH
Scott J. Ellis MD
Jonathan T. Deland MD
Elizabeth A. Cody MD
Contribution of First-Tarsometatarsal Joint Fusion to Deformity Correction in the Treatment of Adult-Acquired Flatfoot Deformity
Foot & Ankle Orthopaedics
title Contribution of First-Tarsometatarsal Joint Fusion to Deformity Correction in the Treatment of Adult-Acquired Flatfoot Deformity
title_full Contribution of First-Tarsometatarsal Joint Fusion to Deformity Correction in the Treatment of Adult-Acquired Flatfoot Deformity
title_fullStr Contribution of First-Tarsometatarsal Joint Fusion to Deformity Correction in the Treatment of Adult-Acquired Flatfoot Deformity
title_full_unstemmed Contribution of First-Tarsometatarsal Joint Fusion to Deformity Correction in the Treatment of Adult-Acquired Flatfoot Deformity
title_short Contribution of First-Tarsometatarsal Joint Fusion to Deformity Correction in the Treatment of Adult-Acquired Flatfoot Deformity
title_sort contribution of first tarsometatarsal joint fusion to deformity correction in the treatment of adult acquired flatfoot deformity
url https://doi.org/10.1177/2473011420927321
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