Clinical Outcomes and Rotational Correction of First Metatarso-Cuneiform Fusion With First Metatarsal to Second Cuneiform Fixation

Background: The modified Lapidus procedure (first metatarso-cuneiform fusion) is a powerful technique for correcting triplanar deformity in hallux valgus. Although traditionally fixed with cross-screws (CS), growing awareness of intercuneiform stability and pronation deformity has led to fixation us...

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Main Authors: Tonya W. An MD, Robert Fuller BA, Lavan Rajan MS, Agnes Cororaton BS, Matthew S. Conti MD, Jonathan T. Deland MD, Scott J. Ellis MD
Format: Article
Language:English
Published: SAGE Publishing 2022-09-01
Series:Foot & Ankle Orthopaedics
Online Access:https://doi.org/10.1177/24730114221127001
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author Tonya W. An MD
Robert Fuller BA
Lavan Rajan MS
Agnes Cororaton BS
Matthew S. Conti MD
Jonathan T. Deland MD
Scott J. Ellis MD
author_facet Tonya W. An MD
Robert Fuller BA
Lavan Rajan MS
Agnes Cororaton BS
Matthew S. Conti MD
Jonathan T. Deland MD
Scott J. Ellis MD
author_sort Tonya W. An MD
collection DOAJ
description Background: The modified Lapidus procedure (first metatarso-cuneiform fusion) is a powerful technique for correcting triplanar deformity in hallux valgus. Although traditionally fixed with cross-screws (CS), growing awareness of intercuneiform stability and pronation deformity has led to fixation using a plate and first metatarsal–second cuneiform (1MT-2C) screw fixation (PS). We investigated Lapidus patient cohorts using CS vs PS fixation to understand patient-reported outcomes, angular and rotational correction, and complication rates. Methods: We retrospectively reviewed cases of modified Lapidus for hallux valgus by a single surgeon. Patients were divided into CS or PS groups according to fixation. All patients had preoperative Patient Reported Outcome Measurement Information System (PROMIS) scores and minimum 12 months of follow-up. PROMIS scores in 6 key domains were compared within and between groups. Radiographic assessment of hallux valgus angle and intermetatarsal angle were performed on pre- and postoperative XR. Pronation of the first ray was measured on pre- and postoperative weightbearing computed tomography. Results: We compared 42 patients with PS fixation to 43 with CS fixation. Both groups had significant improvement in hallux valgus angle and intermetatarsal angle ( P < .001), with no difference between groups. PS patients experienced a greater correction of first metatarsal pronation, an average reduction of 11 degrees, compared to 8 degrees in the CS group ( P < .039). Both cohorts experienced improvement in PROMIS physical function, pain interference, pain intensity, and global physical function. There were no differences in PROMIS score improvements between the cohorts. The CS group started weightbearing at 6 weeks vs 3.6 weeks for the PS group. Complication and revision rates were similar. Conclusion: A plate and 1MT-2C screw fixation provides safe, robust fixation of Lapidus procedure and prevents instability through the intercuneiform joint. We observed similar improvement in PROMIS compared with patients treated with cross-screws. Complications did not increase despite the PS group weightbearing much earlier. PS patients achieved greater first ray rotational correction. Level of Evidence: Level III, retrospective cohort study.
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spelling doaj.art-1d91e23543bf459083dc0500e14702252023-05-18T13:33:19ZengSAGE PublishingFoot & Ankle Orthopaedics2473-01142022-09-01710.1177/24730114221127001Clinical Outcomes and Rotational Correction of First Metatarso-Cuneiform Fusion With First Metatarsal to Second Cuneiform FixationTonya W. An MD0Robert Fuller BA1Lavan Rajan MS2Agnes Cororaton BS3Matthew S. Conti MD4Jonathan T. Deland MD5Scott J. Ellis MD6Division of Foot and Ankle Surgery, Hospital for Special Surgery, New York, NY, USADivision of Foot and Ankle Surgery, Hospital for Special Surgery, New York, NY, USADivision of Foot and Ankle Surgery, Hospital for Special Surgery, New York, NY, USADivision of Foot and Ankle Surgery, Hospital for Special Surgery, New York, NY, USADivision of Foot and Ankle Surgery, Hospital for Special Surgery, New York, NY, USADivision of Foot and Ankle Surgery, Hospital for Special Surgery, New York, NY, USADivision of Foot and Ankle Surgery, Hospital for Special Surgery, New York, NY, USABackground: The modified Lapidus procedure (first metatarso-cuneiform fusion) is a powerful technique for correcting triplanar deformity in hallux valgus. Although traditionally fixed with cross-screws (CS), growing awareness of intercuneiform stability and pronation deformity has led to fixation using a plate and first metatarsal–second cuneiform (1MT-2C) screw fixation (PS). We investigated Lapidus patient cohorts using CS vs PS fixation to understand patient-reported outcomes, angular and rotational correction, and complication rates. Methods: We retrospectively reviewed cases of modified Lapidus for hallux valgus by a single surgeon. Patients were divided into CS or PS groups according to fixation. All patients had preoperative Patient Reported Outcome Measurement Information System (PROMIS) scores and minimum 12 months of follow-up. PROMIS scores in 6 key domains were compared within and between groups. Radiographic assessment of hallux valgus angle and intermetatarsal angle were performed on pre- and postoperative XR. Pronation of the first ray was measured on pre- and postoperative weightbearing computed tomography. Results: We compared 42 patients with PS fixation to 43 with CS fixation. Both groups had significant improvement in hallux valgus angle and intermetatarsal angle ( P < .001), with no difference between groups. PS patients experienced a greater correction of first metatarsal pronation, an average reduction of 11 degrees, compared to 8 degrees in the CS group ( P < .039). Both cohorts experienced improvement in PROMIS physical function, pain interference, pain intensity, and global physical function. There were no differences in PROMIS score improvements between the cohorts. The CS group started weightbearing at 6 weeks vs 3.6 weeks for the PS group. Complication and revision rates were similar. Conclusion: A plate and 1MT-2C screw fixation provides safe, robust fixation of Lapidus procedure and prevents instability through the intercuneiform joint. We observed similar improvement in PROMIS compared with patients treated with cross-screws. Complications did not increase despite the PS group weightbearing much earlier. PS patients achieved greater first ray rotational correction. Level of Evidence: Level III, retrospective cohort study.https://doi.org/10.1177/24730114221127001
spellingShingle Tonya W. An MD
Robert Fuller BA
Lavan Rajan MS
Agnes Cororaton BS
Matthew S. Conti MD
Jonathan T. Deland MD
Scott J. Ellis MD
Clinical Outcomes and Rotational Correction of First Metatarso-Cuneiform Fusion With First Metatarsal to Second Cuneiform Fixation
Foot & Ankle Orthopaedics
title Clinical Outcomes and Rotational Correction of First Metatarso-Cuneiform Fusion With First Metatarsal to Second Cuneiform Fixation
title_full Clinical Outcomes and Rotational Correction of First Metatarso-Cuneiform Fusion With First Metatarsal to Second Cuneiform Fixation
title_fullStr Clinical Outcomes and Rotational Correction of First Metatarso-Cuneiform Fusion With First Metatarsal to Second Cuneiform Fixation
title_full_unstemmed Clinical Outcomes and Rotational Correction of First Metatarso-Cuneiform Fusion With First Metatarsal to Second Cuneiform Fixation
title_short Clinical Outcomes and Rotational Correction of First Metatarso-Cuneiform Fusion With First Metatarsal to Second Cuneiform Fixation
title_sort clinical outcomes and rotational correction of first metatarso cuneiform fusion with first metatarsal to second cuneiform fixation
url https://doi.org/10.1177/24730114221127001
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