Related Experiment Video
Updated: Dec 28, 2025
07:56
A Standardized Method for Measurement of Elbow Kinesthesia
Published on: October 10, 2020
7.6K
The column procedure preserves elbow stability on biomechanical testing
Andrzej P Podgórski1,2, Bartłomiej Kordasiewicz3, Stanisław Pomianowski3
1Department of Traumatology and Orthopaedic Surgery, Adam Gruca Clinical Hospital, Center for Postgraduate Medical Education, Otwock, Poland. apodgors@poczta.onet.pl.
International Orthopaedics
|February 13, 2020
Summary
Open elbow contracture release using the "column procedure" does not compromise joint stability. This surgical technique is safe for patients, maintaining elbow function without significant laxity.
Area of Science:
- Orthopedic Surgery
- Biomechanics
- Joint Stability
Background:
- Elbow contractures often result from trauma, limiting range of motion.
- Surgical intervention, like open release, is sometimes necessary.
- The impact of open release on elbow joint stability remains understudied in vivo.
Purpose of the Study:
- To evaluate the effect of open release of post-traumatic elbow contracture on elbow joint stability.
- To assess elbow joint laxity following the 'column procedure'.
Main Methods:
- Studied 39 patients who underwent open contracture release surgery.
- Measured elbow joint laxity using a specialized apparatus.
- Compared laxity of operated elbows with contralateral healthy elbows.
Main Results:
- The mean absolute difference in laxity between healthy and operated elbows was 1.55°.
- This difference was statistically significant (p=0.0056) but not clinically noticeable.
- The procedure did not result in clinically significant joint instability.
Conclusions:
- The 'column procedure' for open elbow contracture release is a safe surgical option.
- This technique does not compromise the stability of the elbow joint.
- The findings support the use of the 'column procedure' in clinical practice.
Related Concept Videos
01:21Design of Columns under an Eccentric Load
1.1K
Designing columns to withstand eccentric loads is a critical aspect of structural engineering, ensuring structures can support off-center loads without failure. This design process must account for the additional normal stresses introduced by eccentric loading, which can significantly influence a column's stress distribution and overall stability. An eccentric load applied to a column induces normal stresses that can be conceptualized as a combination of stresses due to an equivalent...
1.1K
01:16Eccentric Loading
823
Eccentric loading is a crucial concept in the study of structural engineering and mechanics, particularly when analyzing the stability and stress distribution in columns. Unlike centric loading, where the force is applied along the centroidal axis, causing uniform compression, eccentric loading occurs when a force is applied off-center. This off-center application introduces not only direct compressive stress but also bending stress, significantly influencing the column's behavior under...
823
01:17Design of Columns under a Centric Load
459
The design of columns under centric load is a fundamental aspect of structural engineering and is critical for ensuring the stability and integrity of structures. Euler's and Secant's formulas are central to understanding and calculating the critical load and deformation behaviors of columns, providing a basis for safe and effective structural design.
Euler's formula is applicable under the assumption that the column is a perfect, straight, homogenous prism, and it is operating...
Euler's formula is applicable under the assumption that the column is a perfect, straight, homogenous prism, and it is operating...
459
01:21Euler's Formula for Pin-Ended Columns
618
In structural engineering, the stability of columns under compressive axial loads is a critical consideration, described as buckling. A typical example involves a column PQ, which is pin-connected at both ends and subjected to a centric axial load F applied at one end, with a reaction force of F' = -F at the other end. Here, it is crucial to understand that when an applied load exceeds the critical load, buckling occurs as the system becomes unstable.
To calculate the critical load, envision...
To calculate the critical load, envision...
618
01:15Euler's Formula to Columns with Other End Conditions
916
Euler's formula is very important in the field of structural engineering, providing a foundation for understanding the critical loading conditions of pin-ended columns. This formula links the modulus of elasticity, the moment of inertia of the cross-section, and the column's length, offering a precise calculation of the critical load at which a column is prone to buckling.
916
01:23Euler's Formula to Columns: Problem Solving
885
Euler's formula is used in structural engineering to determine the buckling load of columns under various conditions. However, when dealing with systems that incorporate both rigid elements and elastic components, such as springs, the analysis requires a finer approach to determine the critical load. The problem described involves two rigid bars connected at a pivot point with a spring attached and a vertical load applied at one end.
The system comprises two vertical rigid bars, AB and BC, of...
The system comprises two vertical rigid bars, AB and BC, of...
885