_version_ 1866910245439143936
author Hoffmann, Hanna
Bady, Setareh
de Boer, Claas
Kirchner, Max
Egger, Jan
Röhrig, Rainer
Hölzle, Frank
Gruber, Lennart Johannes
Xie, Kunpeng
Neuhaus, Marlon
Alves, Victor
Barbosa, Guilherme
Barroso, Leonardo
Carvalho, João
Chen, Hao
d'Albenzio, Gabriella
Ferreira, André
Gomes, Nuno
Hayashi, Yuichiro
Hirasawa, Kousuke
Hisey, Rebecca
Hong, Seungjae
Jeong, Seoi
Jesus, Tiago
Kang, Daehong
Kasai, Satoshi
Kikuchi, Shunsuke
Kitasaka, Takayuki
Kondo, Satoshi
Kong, Hyoun-Joong
Kong, Youngbin
Kouno, Atsushi
Laufer, Shlomi
Lee, Kyu Eun
Long, Bining
Maghsoodi, Nooshin
Matsuzaki, Hiroki
Mazomenos, Evangelos
Meiraz, Ori
Mori, Kensaku
Music, Marina
Oda, Masahiro
Papo, Roi
Park, Jieun
Piexoto, Rafael
Rezaei, Saeid
Ribeiro, Mariana
Shin, Soyeon
Shu, Yang
Smoller, Idan
Stoyanov, Danail
Wang, Yihui
Zhao, Xinkai
Bodenstedt, Sebastian
Funke, Isabel
Speidel, Stefanie
Hinrichs-Puladi, Behrus
author_facet Hoffmann, Hanna
Bady, Setareh
de Boer, Claas
Kirchner, Max
Egger, Jan
Röhrig, Rainer
Hölzle, Frank
Gruber, Lennart Johannes
Xie, Kunpeng
Neuhaus, Marlon
Alves, Victor
Barbosa, Guilherme
Barroso, Leonardo
Carvalho, João
Chen, Hao
d'Albenzio, Gabriella
Ferreira, André
Gomes, Nuno
Hayashi, Yuichiro
Hirasawa, Kousuke
Hisey, Rebecca
Hong, Seungjae
Jeong, Seoi
Jesus, Tiago
Kang, Daehong
Kasai, Satoshi
Kikuchi, Shunsuke
Kitasaka, Takayuki
Kondo, Satoshi
Kong, Hyoun-Joong
Kong, Youngbin
Kouno, Atsushi
Laufer, Shlomi
Lee, Kyu Eun
Long, Bining
Maghsoodi, Nooshin
Matsuzaki, Hiroki
Mazomenos, Evangelos
Meiraz, Ori
Mori, Kensaku
Music, Marina
Oda, Masahiro
Papo, Roi
Park, Jieun
Piexoto, Rafael
Rezaei, Saeid
Ribeiro, Mariana
Shin, Soyeon
Shu, Yang
Smoller, Idan
Stoyanov, Danail
Wang, Yihui
Zhao, Xinkai
Bodenstedt, Sebastian
Funke, Isabel
Speidel, Stefanie
Hinrichs-Puladi, Behrus
contents Achieving high levels of surgical skill through effective training is essential for optimal patient outcomes. Automated, data-driven skill assessment holds significant potential to improve surgical training. While machine learning-based methods are increasingly popular for assessing skills in minimally invasive surgery, their application to open surgery remains limited. We present the results of a dedicated MICCAI challenge designed to benchmark and advance vision-based skill assessment in open surgery. The challenge dataset comprises videos of an open suturing training task recorded with a static GoPro camera in a dry-lab setting, with instrument trajectories available in addition to the primary video modality. The OSS Challenge was hosted over two consecutive years, comprising two and three independent tasks, respectively: (1) classifying skill level into four classes, (2) predicting the full Objective Structured Assessment of Technical Skills across eight categories, and (3) tracking hands and surgical tools. Participants submitted diverse solutions including deep learning-based video models, tracking-driven methods, and hybrid approaches. General-purpose spatiotemporal video models consistently achieved the strongest performance, though conceptually diverse approaches reached competitive levels when well-executed. Predicting fine-grained OSATS scores remains challenging but benefits substantially from increased training data. Keypoint tracking proves difficult given frequent occlusions and out-of-frame instances, limiting current applicability for motion-based skill analysis. This work benchmarks innovative and diverse solutions for surgical skill assessment, highlighting both the promise and current limitations of video-based evaluation in open surgery and identifying critical directions for advancing automated skill assessment toward clinical impact.
format Preprint
id arxiv_https___arxiv_org_abs_2605_22200
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle OSS: Open Suturing Skills Vision-Based Assessment Challenge 2024-2025
Hoffmann, Hanna
Bady, Setareh
de Boer, Claas
Kirchner, Max
Egger, Jan
Röhrig, Rainer
Hölzle, Frank
Gruber, Lennart Johannes
Xie, Kunpeng
Neuhaus, Marlon
Alves, Victor
Barbosa, Guilherme
Barroso, Leonardo
Carvalho, João
Chen, Hao
d'Albenzio, Gabriella
Ferreira, André
Gomes, Nuno
Hayashi, Yuichiro
Hirasawa, Kousuke
Hisey, Rebecca
Hong, Seungjae
Jeong, Seoi
Jesus, Tiago
Kang, Daehong
Kasai, Satoshi
Kikuchi, Shunsuke
Kitasaka, Takayuki
Kondo, Satoshi
Kong, Hyoun-Joong
Kong, Youngbin
Kouno, Atsushi
Laufer, Shlomi
Lee, Kyu Eun
Long, Bining
Maghsoodi, Nooshin
Matsuzaki, Hiroki
Mazomenos, Evangelos
Meiraz, Ori
Mori, Kensaku
Music, Marina
Oda, Masahiro
Papo, Roi
Park, Jieun
Piexoto, Rafael
Rezaei, Saeid
Ribeiro, Mariana
Shin, Soyeon
Shu, Yang
Smoller, Idan
Stoyanov, Danail
Wang, Yihui
Zhao, Xinkai
Bodenstedt, Sebastian
Funke, Isabel
Speidel, Stefanie
Hinrichs-Puladi, Behrus
Computer Vision and Pattern Recognition
Artificial Intelligence
Machine Learning
Achieving high levels of surgical skill through effective training is essential for optimal patient outcomes. Automated, data-driven skill assessment holds significant potential to improve surgical training. While machine learning-based methods are increasingly popular for assessing skills in minimally invasive surgery, their application to open surgery remains limited. We present the results of a dedicated MICCAI challenge designed to benchmark and advance vision-based skill assessment in open surgery. The challenge dataset comprises videos of an open suturing training task recorded with a static GoPro camera in a dry-lab setting, with instrument trajectories available in addition to the primary video modality. The OSS Challenge was hosted over two consecutive years, comprising two and three independent tasks, respectively: (1) classifying skill level into four classes, (2) predicting the full Objective Structured Assessment of Technical Skills across eight categories, and (3) tracking hands and surgical tools. Participants submitted diverse solutions including deep learning-based video models, tracking-driven methods, and hybrid approaches. General-purpose spatiotemporal video models consistently achieved the strongest performance, though conceptually diverse approaches reached competitive levels when well-executed. Predicting fine-grained OSATS scores remains challenging but benefits substantially from increased training data. Keypoint tracking proves difficult given frequent occlusions and out-of-frame instances, limiting current applicability for motion-based skill analysis. This work benchmarks innovative and diverse solutions for surgical skill assessment, highlighting both the promise and current limitations of video-based evaluation in open surgery and identifying critical directions for advancing automated skill assessment toward clinical impact.
title OSS: Open Suturing Skills Vision-Based Assessment Challenge 2024-2025
topic Computer Vision and Pattern Recognition
Artificial Intelligence
Machine Learning
url https://arxiv.org/abs/2605.22200