BOFAS Abstracts Archive

You can search for abstracts by using the search bar below.
Alternatively you can browse through podium and poster presentations by selecting the year and / or type below. You can further refine your search using tags or use the search bar.

Search

RSS Abstracts 476 Expand/Collapse
- RSS 2013 64 Expand/Collapse
  - RSS Poster 24 Expand/Collapse
  - RSS Podium 40 Expand/Collapse
- RSS 2014 36 Expand/Collapse
  - RSS Podium 36 Expand/Collapse
- RSS 2015 49 Expand/Collapse
  - RSS Poster 20 Expand/Collapse
  - RSS Podium 29 Expand/Collapse
- RSS 2016 45 Expand/Collapse
  - RSS Poster 18 Expand/Collapse
  - RSS Podium 27 Expand/Collapse
- RSS 2017 40 Expand/Collapse
  - RSS Poster 15 Expand/Collapse
  - RSS Podium 25 Expand/Collapse
- RSS 2018 47 Expand/Collapse
  - RSS Poster 22 Expand/Collapse
  - RSS Podium 25 Expand/Collapse
- RSS 2019 48 Expand/Collapse
  - RSS Poster 25 Expand/Collapse
  - RSS Podium 23 Expand/Collapse
- RSS 2021 15 Expand/Collapse
  - RSS Poster 10 Expand/Collapse
  - RSS Podium 6 Expand/Collapse
- RSS 2022 46 Expand/Collapse
  - RSS Poster 23 Expand/Collapse
  - RSS Podium 23 Expand/Collapse
- RSS 2023 46 Expand/Collapse
  - RSS Poster 23 Expand/Collapse
  - RSS Podium 23 Expand/Collapse
- RSS 2024 40 Expand/Collapse
  - RSS Poster 18 Expand/Collapse
  - RSS Podium 22 Expand/Collapse

Categories: Abstracts, 2022, Podium

First metatarsal rotation after scarf osteotomy for hallux valgus

A.A. Najefi, M. Alsafi, R. Katmeh, A.K. Zaveri, N. Cullen, S. Patel, K. Malhotra, M. Welck

¹Royal National Orthopaedic Hospital NHS Trust, Stanmore, United Kingdom

**Joint Winner of the BOFAS 2022 Chang Cheng Memorial Prize for Best Clinical Paper**

Introduction: Recurrence after surgical correction of hallux valgus may be related to coronal rotation of the first metatarsal. The scarf osteotomy is a commonly used procedure for correcting hallux valgus but has limited ability to correct rotation. Using weightbearing computed tomography (WBCT), we aimed to measure the coronal rotation of the first metatarsal before and after a scarf osteotomy, and correlate these to clinical outcome scores.

Methods: We retrospectively analyzed 16 feet (15 patients) who had a WBCT before and after scarf osteotomy for hallux valgus correction. On both scans, hallux valgus angle (HVA), intermetatarsal angle, and anteroposterior/lateral talus-first metatarsal angle were measured using digitally reconstructed radiographs. Metatarsal pronation (MPA), alpha angle, sesamoid rotation angle and sesamoid position was measured on standardized coronal CT slices. Preoperative and postoperative(12 months) clinical outcome scores(MOxFQ and VAS) were captured.

Results: Mean HVA was 28.6±10.1 degrees preoperatively and 12.1±7.7 degrees postoperatively. Mean IMA was 13.7±3.8 degrees preoperatively and 7.5±3.0 degrees postoperatively. Before and after surgery, there were no significant differences in MPA (11.4±7.7 and 11.4±9.9 degrees, respectively; p=0.75) or alpha angle (10.9±8.0 and 10.7±13.1 degrees, respectively; p=0.83). There were significant improvements in SRA (26.4±10.2 and 15.7±10.2 degrees, respectively; p=0.03) and sesamoid position (1.4±1.0 and 0.6±0.6, respectively; p=0.04) after a scarf osteotomy. There were significant improvements in all outcome scores after surgery. Poorer outcome scores correlated with greater postoperative MPA and alpha angles (r= 0.76 (p=0.02) and 0.67 (p=0.03), respectively).

Conclusion: A scarf osteotomy does not correct first metatarsal coronal rotation, and worse outcomes are linked to greater metatarsal rotation. Rotation of the metatarsal needs to be measured and considered when planning hallux valgus surgery. Further work is needed to compare postoperative outcomes with rotational osteotomies and modified Lapidus procedures when addressing rotation.

Print

Tags: Hallux Valgus Weight-bearing CT

Click thumbnail below to view poster / thumbnail:

Archive of Abstracts