1. ABOUT THE DATASET
--------------------

Title: 
Primary fixation of spherical and conical cups for thumb carpometacarpal joint arthroplasty

Creator: 
Mackenzie Smeeton[1], Emma Lowey[1], Sophie Williams[1], Joris Duerinckx[2], Sumedh Talwalkar[3]

Organisation: 
[1] Institute of Medical and Biological Engineering, University of Leeds, Leeds UK
[2] Ziekenhuis Oost-Limburg, Genk, Belgium
[3] Wrightington Hospital, Wigan, UK

Rights-holder(s):
Copyright 2026 University of Leeds

Publication Year: 
2026

Description: 
This dataset relates to the investigation of the primary fixation, measured by the axial push-out force, for KeriMedical TOUCH spherical and conical thumb carpometacarpal joint replacement cups. Mechanical tests were conducted in synthetic bone (25-pcf) to assess the effects of cup geometry, size, and suspension on mechanical fixation. The dataset includes results from four implantation conditions:
(1) Control - 9 mm cup, fully seated into the bone
(2) Fully suspended - 9 mm cup, suspended 1 mm above the artificial bone 
(3) Partially suspended - 9 mm cup, seated into an angled bony face with a maximum 1 mm exposure of the cup on one side and full seating on the opposing side 
(4) Upsized - 10 mm cup, fully seated

Cite as: 
Mackenzie Smeeton, Emma Lowey, Sophie Williams, Joris Duerinckx, Sumedh Talwalkar (2026): Primary fixation of spherical and conical cups for thumb carpometacarpal joint arthroplasty. [Dataset]. https://doi.org/10.5518/1735 

Related publication: 


2. TERMS OF USE
---------------
Copyright 2026 University of Leeds. Unless otherwise stated, this dataset is licensed under a Creative Commons Attribution 4.0 International License: https://creativecommons.org/licenses/by/4.0/.


3. CONTENTS
-----------
Each file is named using the following syntax:
Push_Out_[CupShape][CupSize]_[ImplantCondition].csv
Where:
CupShape = C for Conical, S for Spherical
CupSize = 9 or 10 mm
ImplantCondition = Standard, Suspended, or Angled
	- Standard = Fully seated, 9 mm or 10 mm cup
	- Suspended = 1 mm gap between top surface of cup and trapezium
	- Angled = seated into an angled trapezium with 1 mm suspension on one side

The dataset contains the following files:
	Push_Out_C9_Standard.csv
	Push_Out_C9_Suspended.csv
	Push_Out_C9_Angled.csv
	Push_Out_C10_Standard.csv
	Push_Out_S9_Standard.csv
	Push_Out_S9_Suspended.csv
	Push_Out_S9_Angled.csv
	Push_Out_S10_Standard.csv

Each CSV contains:
Displacement (mm) – displacement of the cup, where zero corresponds to the point of maximum force, i.e. the point just as the cup dislodges.
Force (%) – force normalised to the maximum force recorded for the respective test type and cup geometry across all implantation conditions.


4. METHODS
----------
Refer to associated paper.