1. ABOUT THE DATASET
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Title:	Porcine hip cartilage degradation in hemiarthroplasty models under anatomical simulation dataset

Creator(s): Roberto Leonardo Diaz, David Jimenez-Cruz, Sophie Williams

Organisation(s): University of Leeds.

Rights-holder(s): Roberto Leonardo Diaz, David Jimenez-Cruz, Sophie Williams


Publication Year: 2026

Description: This dataset captures the physical changes in natural hip joint specimens across varying levels of acetabular clearance, ranging from natural tissue to extra-large clearance configurations. It features comprehensive metadata logs (SpecimensLog.csv and Degraded-Pre-test Ratio.csv) alongside an organised repository of sequential photographic observations taken at every hour for eight hours of testing. The collection is designed to support the analysis of material degradation, and component pairing, under controlled experimental conditions.

Cite as: Leonardo Diaz, Roberto, Jimenez-Cruz, David, and Williams, Sophie (2026): Porcine hip cartilage degradation in hemiarthroplasty models under anatomical simulation. [Dataset] https://doi.org/10.5518/1669


Related publication: Leonardo-Diaz, R., Jimenez-Cruz,D., Board, T.N., Williams, S., Effect of femoral head radial clearance on acetabular cartilage degradation in hip hemiarthroplasty: An in vitro Anatomical simulator study. Bioengineering (MDPI) 2026. (Accepted)

Contact: R.LeonardoDiaz@leeds.ac.uk


2. TERMS OF USE
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Copyright 2026 Roberto Leonardo Diaz, David Jimenez-Cruz, Sophie Williams. This dataset is licensed under a Creative Commons Attribution 4.0 International Licence: https://creativecommons.org/licenses/by/4.0/.]


3. PROJECT AND FUNDING INFORMATION
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Title: Enhanced surgical treatments for hip osteoarthritis

Dates: 01 January 2018 - 31 December 2023

Funding organisation: Engineering and Physical Sciences Research Council

Grant no.: EP/R003971/1



4. CONTENTS
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The repository consist of:

SpecimensLog.csv — Metadata file with sample details, including internal IDs, measurements, and pairing size.

Degraded-Pre-test Ratio.csv — Metadata file with degraded-pre-test ratio (%) for each sample.

Dataset - Image dataset, organised in folders hierarchically as follows: 
Group-> Sample -> Time -> Observation

File naming convention

Individual observation images use the following naming pattern:

grp{XX}_smp{YY}_t{ZZ}_obs{AA}.jpg

WHERE:

Group (grp). Folders are categorised by the specific acetabular clearance tested:

grpNT – Natural Tissue
grpNC – Negative Clearance
grpSC – Small Clearance
grpLC – Large Clearance
grpXLC – Extra Large Clearance


Sample (smp). Individual specimen folders follow the naming convention: smpXX

smpXX – The specimen number (e.g., smp01).


Time (t). Time folders represent the testing timepoint, starting at 0H for the intact case:
- All groups except Natural Tissue: sampled every 1 hour (0H, 1H, 2H, 3H, ...).
- Natural Tissue group: sampled every 2 hours (0H, 2H, 4H, ...).

Observation (obs). Each time folder contains one or more JPG images, one per observation taken at that timepoint.


Example:

grpXLC_smp02_t4H_obs01.jpg — Extra Large Clearance group, specimen 2, 4-hour timepoint, observation 1.

| Field | Meaning                                                    | Example |
|-------|------------------------------------------------------------|---------|
| grp   | Group code (see nomenclature above)                        | grpXLC  |
| smp   | Specimen number within the group, zero-padded (01, 02...)  | smp02   |
| t     | Timepoint, in hours, followed by H                         | t4H     |
| obs   | Observation number at that timepoint, zero-padded          | obs01   |



5. METHODS
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A detailed description of the methods used to collect this data can be found in the associated journal article.