Related Experiment Video
Updated: Feb 8, 2026
08:40
Author Spotlight: A Novel 3D-Printed Titanium Implant for Minimally Invasive Treatment of Hip Dysplasia in Young Dogs
Published on: April 19, 2024
3.8K
A comparison of two different navigated hip replacement techniques on leg length discrepancy
T N Jennison1, P Craig1, Edward D Davis1
1Russells Hall Hospital, Dudley, West Midlands, DY1 2HQ, United Kingdom.
Journal of Orthopaedics
|June 28, 2018
Summary
Navigated total hip arthroplasty using either a femoral array or pinless markers showed no significant difference in correcting leg length discrepancy. Both methods achieved comparable outcomes for patients.
Area of Science:
- Orthopedic Surgery
- Surgical Navigation Technology
Background:
- Leg length discrepancy is a common complication following total hip arthroplasty.
- Navigated surgery aims to improve accuracy in total hip arthroplasty.
- Different reference systems may impact the precision of navigated procedures.
Purpose of the Study:
- To compare the efficacy of a femoral array versus pinless reference markers in managing leg length discrepancy during navigated total hip arthroplasty.
- To determine if the choice of reference system influences intraoperative and postoperative leg length changes.
Main Methods:
- A prospective study involving 162 consecutive patients undergoing navigated total hip arthroplasty.
- Patients were divided into two groups based on the reference system used: femoral array or external pinless markers.
- Preoperative, intraoperative, and postoperative leg length discrepancy measurements were recorded and analyzed.
Main Results:
- No statistically significant difference was found in preoperative leg length discrepancy between the groups (p=0.524).
- Mean intraoperative changes in leg length were comparable: 3.7 mm for the femoral array group and 4.6 mm for the pinless marker group (p=0.262).
- Postoperative leg length measurements showed no significant difference, with mean changes of 4.2 mm and 4.1 mm, respectively (p=0.656).
Conclusions:
- Both the femoral array and pinless reference marker systems are equally effective in achieving accurate leg length equalization during navigated total hip arthroplasty.
- The selection of reference marker type does not significantly impact the management of leg length discrepancy in this navigated surgical approach.
More Related Videos
Related Concept Videos
02:45Self-Discrepancy Theory
18.9K
One influential perspective on what motivates people's behavior is detailed in Tory Higgin's self-discrepancy theory (Higgins, 1987). He proposed that people hold disagreeing internal representations of themselves that lead to different emotional states.
18.9K
01:29Self-Discrepancy and Its Effects
327
Self-discrepancy theory explains how people compare their actual self to their ideal and ought selves and how mismatches between these self-guides can lead to emotional distress. Developed by E. Tory Higgins, the theory distinguishes among three components of self-concept: the actual self, the ideal self, and the ought self. These refer respectively to how individuals perceive themselves, how they aspire to be, and how they believe they are obligated to be. Emotional well-being, self-esteem,...
327
02:57The Sense of Self: Reflected Self-Appraisal and Social Comparison
56.1K
According to Charles Cooley, we base our image on what we think other people see (Cooley 1902). We imagine how we must appear to others, then react to this speculation. We don certain clothes, prepare our hair in a particular manner, wear makeup, use cologne, and the like—all with the notion that our presentation of ourselves is going to affect how others perceive us. We expect a certain reaction, and, if lucky, we get the one we desire and feel good about it. But more than that, Cooley...
56.1K
01:23Muscles that Move the Leg
5.3K
The movement of the legs is facilitated by numerous muscles located within the anterior, medial, and posterior compartments of the thigh.
Anterior Compartment
The quadriceps femoris, the most visible muscle of the anterior compartment, is integral for leg extension and thigh flexion. It is formed by merging four distinct muscles — the vastus lateralis, vastus medialis, vastus intermedius, and rectus femoris. The quadriceps tendon, a shared tendon of the four quadriceps muscles, is affixed...
Anterior Compartment
The quadriceps femoris, the most visible muscle of the anterior compartment, is integral for leg extension and thigh flexion. It is formed by merging four distinct muscles — the vastus lateralis, vastus medialis, vastus intermedius, and rectus femoris. The quadriceps tendon, a shared tendon of the four quadriceps muscles, is affixed...
5.3K
01:30Continuous Renal Replacement Therapy
1.1K
Continuous Renal Replacement Therapy, also known as CRRT, is a procedural treatment for acute kidney injury (AKI) that gradually removes uremic toxins and fluids while maintaining acid-base balance and stabilizing electrolytes. It is particularly useful for hemodynamically unstable patients. Unlike intermittent hemodialysis, which is faster, CRRT provides a gentler approach over 24 hours, closely mimicking the function of natural kidneys. However, CRRT is not ideal for patients with...
1.1K
01:11Assessing Blood pressure in the Leg
10.3K
Proper measurement of leg blood pressure is a critical skill for healthcare providers, ensuring precise and reliable readings. When performed correctly, this procedure informs patient care and enhances the efficacy of interventions. The following text outlines step-by-step guidelines to measure blood pressure in the leg, providing clarity and ease of understanding for practitioners.
Preparation:
Preparation:
10.3K