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Adult Stem Cells

Adult Stem Cells

Stem cells are undifferentiated cells that divide and produce more stem cells or progenitor cells that differentiate into mature, specialized cell types. All the cells in the body are generated from stem cells in the early embryo, but small populations of stem cells are also present in many adult tissues including the bone marrow, brain, skin, and gut. These adult stem cells typically produce the various cell types found in that tissue—to replace cells that are damaged or to continuously...

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Related Experiment Video

Updated: Jun 5, 2025

Individualized Stem-positioning in Calcar-guided Short-stem Total Hip Arthroplasty

Individualized Stem-positioning in Calcar-guided Short-stem Total Hip Arthroplasty

Published on: February 27, 2018

Femoral stem extraction devices.

Shujaa T Khan¹, Nickelas Huffman¹, Jonathan Walsh¹

¹Department of Orthopedic Surgery, Cleveland Clinic Foundation, Cleveland, OH, 44195, USA.

Archives of Orthopaedic and Trauma Surgery

|December 12, 2024

Summary

This summary is machine-generated.

Revision hip arthroplasty requires effective femoral stem extraction. Specialized systems offer improved precision and efficiency, crucial for successful outcomes and bone preservation in revision total hip arthroplasty (THA).

Keywords:

Devices Extraction Femoral stem Hardware Removal Tools

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Last Updated: Jun 5, 2025

Individualized Stem-positioning in Calcar-guided Short-stem Total Hip Arthroplasty

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Published on: February 27, 2018

Use of Human Perivascular Stem Cells for Bone Regeneration

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Treatment of Osteochondral Defects in the Rabbit's Knee Joint by Implantation of Allogeneic Mesenchymal Stem Cells in Fibrin Clots

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Published on: May 21, 2013

Area of Science:

Orthopedic surgery
Biomedical engineering
Implant retrieval

Background:

Rising rates of primary total hip arthroplasty (THA) predict a significant increase in revision THA procedures by 2030.
Femoral stem extraction during revision THA presents considerable challenges, including risks of bone loss and fracture.
Technological advancements in extraction devices aim to mitigate these challenges.

Purpose of the Study:

To review available femoral stem extraction devices for revision total hip arthroplasty (rTHA).
To discuss implant identification and the technical aspects of various extraction tools.

Main Methods:

A scoping review of existing literature on femoral extraction devices.
Inclusion of devices used in clinical practice but not extensively published.
Focus on technical features, benefits, and drawbacks of tools like osteotomes, saws, burrs, trephines, and specialized extraction systems.

Main Results:

Accurate identification of femoral implants is vital for preoperative planning in rTHA.
No single extraction device is universally suitable for all cases.
Advanced systems (e.g., Watson, Shukla) enhance extraction precision, reduce operative time, and minimize cortical perforations compared to traditional tools.

Conclusions:

Effective femoral stem extraction in rTHA is key to managing complications and preserving bone stock.
Specialized extraction systems provide enhanced precision and efficiency over traditional instruments.
Thorough preoperative planning, including implant identification and appropriate device selection, is paramount for successful revision hip arthroplasty outcomes.