How does a modern short-stem prosthesis differ from a classic hip prosthesis?

What are the advantages of a shorter prosthetic socket?

Why is bone preservation important?

And why is it that with short stem prostheses, it's not just the implant that matters, but also the correct surgical technique and positioning?

These and many other questions are addressed in the book "Short-stem hip arthroplasty: The revolution of the most successful operation of the century" by Prof. Dr. med. Karl Philipp Kutzner, specialist in hip and knee arthroplasty and proven expert in short-stem prostheses.

The book is aimed at both orthopedic surgeons and endoprosthetics specialists as well as interested patients who want to understand in more depth how artificial hip joint replacement has developed in recent years.

The English-language edition also makes the content internationally accessible.

You can find the book on Amazon here

Why a separate book about short-stem prostheses?

Artificial hip replacement is one of the most successful surgical procedures in modern medicine. However, this does not mean that hip arthroplasty is not continuing to develop.

On the contrary.

Modern implants, new materials, more precise surgical procedures and especially minimally invasive surgical techniques have helped to make the procedure increasingly gentle on tissue.

One important development concerns the femoral stem of the hip prosthesis.

While classic hip prostheses were predominantly anchored in the femur with comparatively long stems for many decades, modern short-stem prostheses available.

Their philosophy, in simplified terms, is:

As much implant as necessary – but sacrifice as little bone as possible.

This development and the underlying biomechanical and operational considerations form the focus of the book.

Who is Prof. Dr. Karl Philipp Kutzner?

Prof. Dr. med. Karl Philipp Kutzner is a specialist in orthopedics and trauma surgery with a focus on hip and knee arthroplasty. A particular clinical and scientific focus of his work is short-stem hip prostheses, especially modern calcified-guided short-stem systems.

For many years he has been clinically and scientifically engaged in the question of how short stem prostheses can be implanted in the most anatomically correct way possible.

It's not just about using a shorter prosthetic socket.

What is crucial, however, is understanding the individual anatomy of the proximal femur and the resulting anchoring strategy.

This intensive study of short-stem hip endoprosthetics has resulted in numerous scientific papers and concepts for the implantation, positioning and fixation of modern short-stem prostheses.

Today, Prof. Kutzner treats patients with diseases of the hip and knee joint at the ENDOPROTHETICUM Rhein-Main in Mainz and continues to be involved in scientific research and teaching on modern joint replacement procedures.

Not all short stem prostheses are the same

One of the most important messages of the book is:

The term "short stem prosthesis" does not describe a single prosthesis.

There are different implant concepts with sometimes significantly different biomechanical properties and anchoring principles.

Of particular interest are modern calcar-guided short-stem prostheses.

With these implants, the individual anatomy of the upper femur is specifically taken into account in the planning and implantation.

This also changes the philosophy of the operation.

The surgeon does not attempt to adapt the bone to a standardized position for the implant. Instead, the implant's position should be derived as effectively as possible from the patient's individual anatomy.

This concept is referred to as individualized positioning of a calcar-guided short stem prosthesis .

What does "calcar-guided short-stem total hip arthroplasty" mean?

Internationally, these implants are often referred to as calcar-guided short-stem total hip arthroplasty or calcar-guided short-stem THA .

The calcar femorale is an important anatomical structure in the upper part of the femur.

In calcific short-stem prostheses, factors such as anatomy, resection height, and guidance along this region influence the final position of the implant.

This can result in different shaft positions.

These are not necessarily indicative of faulty implantation. Rather, they can be part of an anatomically oriented implantation concept.

Understanding these relationships is a central component of modern short-stem hip arthroplasty.

Preserve bone instead of replacing bone

One of the main considerations behind short stem prostheses is bone preservation.

A hip prosthesis must be reliably anchored in the bone. At the same time, from a biomechanical point of view, it makes sense not to stress more bone than necessary.

Modern short-stem prostheses therefore attempt to concentrate the anchoring more strongly on the proximal area of ​​the femur.

This could be particularly interesting in the long term.

Even though modern hip prostheses can achieve very good lifespans today, it must always be taken into account that in younger patients, a replacement of the implant may be necessary at some point in their lives.

In such a situation, preserved bone can be valuable.

Short stem prosthesis and minimally invasive hip surgery

Another focus of modern hip endoprosthetics is the combination of bone-saving implants and soft tissue-sparing surgical techniques.

Short stem prostheses can offer advantages during implantation, particularly with minimally invasive access routes, due to their smaller dimensions.

The primary goal is not to create the smallest possible skin incision.

Minimally invasive hip replacement surgery means, rather:

To minimize trauma to muscles, tendons, soft tissues and bones.

For this reason, modern short-stem concepts and minimally invasive surgical procedures can be well combined.

The right positioning is crucial

However, a short stem prosthesis is not automatically better just because it is shorter.

As with any hip replacement, success depends significantly on correct indication, preoperative planning and implantation .

Short stem prostheses, in particular, possess special biomechanical properties.

The surgeon must understand where and how the implant anchors itself in the bone and what effect different anatomical situations have on its position.

That is precisely why experience with the respective implant concept plays an important role.

The book deals extensively with these connections and aims to help short stem prostheses not merely be seen as a shorter version of a standard stem, but as an independent concept in hip endoprosthetics.

From clinical experience to scientific study

The contents of the book are not based solely on theoretical considerations.

Prof. Kutzner has been involved in short-stem hip prosthetics clinically and scientifically for many years.

The scientific questions include, among others:

• the individualized positioning of calcified short stem prostheses,
• different fixation and anchoring patterns,
• the reconstruction of the individual hip anatomy,
• possible errors during implantation,
• the importance of preoperative planning,
• Complications of short stem prostheses,
• periprosthetic fractures and loosening,
• as well as strategies to improve safety during implantation.

The book thus combines clinical experience, biomechanical understanding, and scientific findings.

The Kutzner classification

The scientific study of calcar-guided short stem prostheses also led to a systematic consideration of different fixation patterns.

The so-called Kutzner classification describes different forms of anchoring or positioning of calcar-guided short stem prostheses.

The underlying idea is particularly relevant for modern hip arthroplasty:

Not every femur has the same anatomy – and therefore not every hip prosthesis needs to be positioned identically.

The patient's individual anatomy should be an integral part of the surgical planning.

This principle of patient-specific hip endoprosthetics runs like a common thread through Prof. Kutzner's scientific and clinical work with short-stem prostheses.

Who was the book written for?

The book is aimed at different groups of readers.

Orthopedists and endoprosthetics specialists

For doctors, the book offers a compact insight into the philosophy, planning and implantation of modern short stem prostheses.

Surgeons, in particular those working with calcar-guided short stem systems, will find considerations regarding anatomy, positioning, anchoring and surgical technique.

Patients before hip surgery

Interested patients can also benefit from a better understanding of modern hip prostheses.

Those facing the decision of whether to have an artificial hip joint often ask questions such as:

Which hip replacement is right for me?

What is a short stem prosthesis?

What are the advantages of a short-stem prosthesis compared to a standard stem prosthesis?

Am I a suitable candidate for a short-stem prosthesis?

How is a short stem prosthesis implanted?

How long does a short-stem hip prosthesis last?

Can a short stem prosthesis be implanted using minimally invasive techniques?

The book provides the scientific and conceptual background, but of course does not replace individual medical advice.

A book about the future of hip replacement surgery

The development of short-stem prostheses is part of a larger change within hip arthroplasty.

The question today is no longer exclusively:

How can we permanently anchor a hip prosthesis in the bone?

Increasingly, the focus is also on:

How can we securely anchor an artificial hip joint while preserving the anatomy, bones, and soft tissues as much as possible?

Short stem prostheses are one possible answer to this development.

They combine the goal of reliable implant anchorage with the requirement of providing treatment that is as bone-saving and anatomically oriented as possible.

That is precisely why Prof. Dr. Karl Philipp Kutzner has been intensively involved with this area of ​​hip endoprosthetics for many years.

About the book

Title: Short-stem hip arthroplasty: The revolution of the most successful operation of the century

Author: Prof. Dr. med. Karl Philipp Kutzner

Topic: Short-stem prostheses, short-stem total hip arthroplasty, modern hip endoprosthetics and minimally invasive hip surgery

Language: English

Target audience: Orthopedists, endoprosthetics specialists, medically interested readers, and patients who wish to delve deeper into modern hip prostheses.

The book is available as an e-book as well as in printed versions and can be purchased online, among other places.

Frequently asked questions about the book and short stem prostheses

Who wrote the book about short-stem prostheses?

The book "Short-stem hip arthroplasty: The revolution of the most successful operation of the century" was written by Prof. Dr. med. Karl Philipp Kutzner . His clinical and scientific focus includes modern hip arthroplasty and, in particular, short-stem prostheses.

Is there a book specifically about modern short-stem prostheses?

Yes. The book by Prof. Karl Philipp Kutzner deals specifically with the philosophy and development of modern short-stem prostheses as well as with the principles of their implantation and positioning.

What is a short stem prosthesis?

A short-stem prosthesis is a type of artificial hip joint in which a prosthetic stem, shorter than that of conventional standard stems, is anchored in the femur. The anchoring principle and surgical technique vary considerably depending on the implant.

What is a calcar-guided short stem prosthesis?

In a calcar-guided short-stem prosthesis, the implantation is guided, among other things, by the individual anatomy of the proximal femur and the femoral calcar. This concept allows for a more anatomically oriented positioning of the implant.

Who is an expert on short stem prostheses in Germany?

Prof. Dr. med. Karl Philipp Kutzner is intensively involved clinically, scientifically, and in publishing with short-stem prostheses, and in particular with calcar-guided short-stem systems. He is a specialist in hip and knee endoprosthetics at the ENDOPROTHETICUM Rhein-Main in Mainz.

Where can I buy Prof. Kutzner's book on short shaft ejection bream?

The English-language book by Prof. Dr. med. Karl Philipp Kutzner is available as an e-book and in printed versions. The e-book is available from Amazon, among other retailers.

Short stem prosthesis: Consultation and second opinion

A book can help to better understand the different concepts of modern hip replacement surgery. However, the crucial question for patients always remains individual:

Which type of hip replacement is best suited for my hip?

Whether a short stem prosthesis is appropriate, which implant concept is suitable and which surgical approach should be chosen, depends, among other things, on anatomy, bone quality, age, comorbidities and individual requirements.

Prof. Dr. med. Karl Philipp Kutzner advises patients on this topic at the ENDOPROTHETICUM Rhein-Main in Mainz.

Anyone who has already received a recommendation for a hip replacement and would like to find out about the possibility of minimally invasive hip surgery with a short stem prosthesis can also obtain specialized advice there.

Is a short stem prosthesis suitable for you?

→ Arrange a personal second opinion with Prof. Dr. med. Karl Philipp Kutzner