Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Errors in Taping01:18

Errors in Taping

470
Errors in taping arise from multiple factors that can significantly impact measurement accuracy in surveying. Misalignment of the tape, often due to human error, is one primary source. A skilled rear tapeman, using a telescope, can help correct alignment by guiding the head tapeman; however, human limitations still lead to small inaccuracies. These errors may include misplacement of pins or inaccurate tape readings due to common visual confusions, such as mistaking a six for a nine. Such...
470
Taping Over Different Ground Profiles01:12

Taping Over Different Ground Profiles

463
Taping over varying ground profiles requires careful adaptation to achieve accurate measurements. On smooth, level ground with minimal vegetation, the tape can rest directly on the ground. Here, the taping team, typically consisting of a head and a rear tapeman, coordinates their positions with clear communication. The rear tapeman holds the tape at the starting point and guides the head tapeman toward a range pole placed beyond the endpoint, using hand or voice signals to ensure alignment.On...
463
Minor Losses in Pipes01:25

Minor Losses in Pipes

2.6K
In pipe systems, minor losses refer to energy losses arising from components such as valves, bends, fittings, expansions, and other features that disrupt the steady flow of fluid. These disturbances cause energy dissipation through turbulence and resistance, which engineers quantify to manage system efficiency effectively.
Valves play a significant role in generating minor losses by obstructing or redirecting the fluid flow. When a valve is closed or partially closed, it restricts the flow...
2.6K
Hazard Rate01:11

Hazard Rate

514
The hazard rate, also known as the hazard function or failure rate, is a statistical measure used to describe the instantaneous rate at which an event occurs, given that the event has not yet happened. From a probabilistic perspective, it represents the likelihood that a subject will experience the event in a very small time interval, conditional on surviving up to the beginning of that interval. In terms of frequency, the hazard rate can be viewed as the ratio of the number of events to the...
514
Major Losses in Pipes01:28

Major Losses in Pipes

2.7K
When a fluid flows through a pipe, it experiences energy losses due to frictional resistance along the pipe walls, known as major losses. These energy losses result in a pressure drop, which varies based on the flow conditions — whether laminar or turbulent — and the specific physical properties of the fluid and pipe.
Fluid flow can be classified as laminar or turbulent, primarily based on the Reynolds number. This dimensionless number reflects the relative influence of inertial to viscous...
2.7K
Lumber Defects01:23

Lumber Defects

743
Lumber defects, which can affect both the appearance and structural integrity of wood, include a variety of growth and manufacturing flaws. Growth defects such as knots and knotholes occur where branches were once attached to the tree trunk, with knotholes forming when these knots fall out. Other natural defects include decay and insect damage, which compromise the wood's strength and durability.
Shakes are minor fractures that run along or across the wood's annual rings, while wane is...
743

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Bearing Materials in Hip Arthroplasty - What Do the Arthroplasty Registries Say?

Zeitschrift fur Orthopadie und Unfallchirurgie·2026
Same author

Mandatory Labelling of CMR Substances in Implants and Their Impact on Orthopedics and Trauma Surgery.

Zeitschrift fur Orthopadie und Unfallchirurgie·2026
Same author

Design of Surgical Impaction Instruments Matters.

Arthroplasty today·2025
Same author

Fluted stem designs enhance surgical precision and primary stability in cementless revision hip arthroplasty - A cadaver study.

Clinical biomechanics (Bristol, Avon)·2025
Same author

How does the collar in cementless hip stems work? Comparison of the strain distribution in the cortex of the proximal femur.

Clinical biomechanics (Bristol, Avon)·2025
Same author

Correction: The force at the implant cannot be assessed by the mallet force-Unless supported by a model.

PloS one·2025
Same journal

Utilisation of total hip arthroplasty in the United States by settlement type: is there equity of access?

Hip international : the journal of clinical and experimental research on hip pathology and therapy·2026
Same journal

Comparative performance of the risk analysis index versus traditional frailty measures in predicting outcomes following revision total hip arthroplasty for mechanical prosthetic complications.

Hip international : the journal of clinical and experimental research on hip pathology and therapy·2026
Same journal

The true fate of the 2-stage revision arthroplasty for hip and knee prosthetic joint infection.

Hip international : the journal of clinical and experimental research on hip pathology and therapy·2026
Same journal

Approach-specific learning curves for operative efficiency in robotic-assisted total hip arthroplasty.

Hip international : the journal of clinical and experimental research on hip pathology and therapy·2026
Same journal

Short-term survivorship of a novel acetabular component with a combination of non-locking and variable-angle locking screws in complex acetabular reconstruction.

Hip international : the journal of clinical and experimental research on hip pathology and therapy·2026
Same journal

The impact of hip geometrical parameters on muscle and joint biomechanics during normal gait.

Hip international : the journal of clinical and experimental research on hip pathology and therapy·2026
See all related articles

Related Experiment Video

Updated: Apr 11, 2026

A Tactile Automated Passive-Finger Stimulator TAPS
19:44

A Tactile Automated Passive-Finger Stimulator TAPS

Published on: June 3, 2009

14.3K

The taper disaster--how could it happen?

Michael M Morlock1

  • 1Institute of Biomechanics, TUHH Hamburg University of Technology, Hamburg - Germany.

Hip International : the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
|June 6, 2015
PubMed
Summary
This summary is machine-generated.

Corrosion of metal-on-metal hip implants (MoM THA) became a significant issue due to taper connection failures. Design changes and larger heads exacerbated taper corrosion, leading to clinical problems despite successful pre-clinical testing.

More Related Videos

Uncovering Beat Deafness: Detecting Rhythm Disorders with Synchronized Finger Tapping and Perceptual Timing Tasks
09:04

Uncovering Beat Deafness: Detecting Rhythm Disorders with Synchronized Finger Tapping and Perceptual Timing Tasks

Published on: March 16, 2015

13.5K
In Situ Time-dependent Dielectric Breakdown in the Transmission Electron Microscope: A Possibility to Understand the Failure Mechanism in Microelectronic Devices
09:26

In Situ Time-dependent Dielectric Breakdown in the Transmission Electron Microscope: A Possibility to Understand the Failure Mechanism in Microelectronic Devices

Published on: June 26, 2015

9.4K

Related Experiment Videos

Last Updated: Apr 11, 2026

A Tactile Automated Passive-Finger Stimulator TAPS
19:44

A Tactile Automated Passive-Finger Stimulator TAPS

Published on: June 3, 2009

14.3K
Uncovering Beat Deafness: Detecting Rhythm Disorders with Synchronized Finger Tapping and Perceptual Timing Tasks
09:04

Uncovering Beat Deafness: Detecting Rhythm Disorders with Synchronized Finger Tapping and Perceptual Timing Tasks

Published on: March 16, 2015

13.5K
In Situ Time-dependent Dielectric Breakdown in the Transmission Electron Microscope: A Possibility to Understand the Failure Mechanism in Microelectronic Devices
09:26

In Situ Time-dependent Dielectric Breakdown in the Transmission Electron Microscope: A Possibility to Understand the Failure Mechanism in Microelectronic Devices

Published on: June 26, 2015

9.4K

Area of Science:

  • Biomaterials Science
  • Orthopedic Surgery
  • Implant Corrosion

Background:

  • Corrosion at implant interfaces, particularly in modular hip joints, is a known challenge.
  • Metal-on-metal total hip arthroplasties (MoM THA) introduced early in the 21st century highlighted taper connection issues.
  • Previous taper designs were adequate for smaller femoral heads, but larger heads introduced new mechanical stresses.

Purpose of the Study:

  • To review the scientific understanding of taper problems preceding the MoM THA 'disaster'.
  • To investigate the reasons behind the widespread taper corrosion observed in MoM THA.
  • To analyze the limitations of pre-clinical testing in predicting clinical outcomes.

Main Methods:

  • Literature review of scientific knowledge on taper connections and implant corrosion.
  • Analysis of historical design changes in hip implants.
  • Speculative analysis of factors contributing to taper failure in MoM THA.

Main Results:

  • Modifications to taper connections in the 1990s may have reduced mechanical strength, unnoticed with smaller heads.
  • Larger femoral heads in MoM THA increased mechanical loading and friction, revealing taper interface corrosion.
  • Pre-clinical testing did not predict the clinical failure scale, indicating limitations in current testing paradigms.

Conclusions:

  • The introduction of large heads in MoM THA amplified pre-existing taper weaknesses, leading to widespread corrosion.
  • The complex patient-implant-surgeon system is prone to failure when innovations are not rigorously validated.
  • A controlled, stepwise introduction of new medical device technologies is crucial to prevent clinical disasters.