Comparison Between Standard and Gender-Specific Knee Designs in Total Knee Arthroplasty in Female Patients
Elsayed Morsey Zaki,
Tarek Ali Elkhadrawe,
Ayman Mohammed Ebied,
Amro Saber Elsayed,
Hany Elsayed Saad
Issue:
Volume 3, Issue 4, July 2015
Pages:
67-72
Received:
15 May 2015
Accepted:
29 May 2015
Published:
14 June 2015
Abstract: Objectives: Current study is a comparative, prospective, randomized, short-term outcome study to compare the early results of Total Knee Arthroplasty in female patients using either standard or gender-specific knee prosthesis for treatment of advanced osteoarthritis of the knee joint. Background: Gender-specific knee athroplasty prosthesis is designed to better accommodate the differences noted in distal femoral anatomy in female patients compared to males. Several studies have reported differences in knee morphometry between genders such as the height/width ratio of the distal femoral condyle, the quadriceps angle and the shape of the distal femur. The need for Gender-specific (GS) femoral prostheses is still debated and has led us to compare short-term outcomes of TKA using standard (STD) or GS femoral components. Methods: In the period between February 2012 and February 2013, a comparative prospective randomized study was conducted involving 34 female patients with 40 knees who underwent primary total knee arthroplasty for knee joint advanced osteoarthritis and divided into two groups , The first group included 20 knees underwent total knee arthroplasty using Gender-Specific Knee Design with Gender-Specific femoral component (Zimmer Gender Solutions NexGen High-Flex ( NexGen LPS-Flex ) Implant , The second group included 20 knees underwent total knee arthroplasty using standard Knee Design with Standard femoral component (Zimmer NexGen LPS Implant). Results: No statistically significant differences were observed between the two groups regarding pain improvement, range of motion improvement, pre and post operative OXFORD scores, Knee Society Scores, WOMAC scores, satisfaction, preference, complications, and radiographic results. Conclusion: Early clinical outcomes for the knees with a gender-specific NexGen LPS-Flex prosthesis were similar to those for the knees with a standard NexGen LPS prosthesis in female patients. gender-specific knee prosthesis showed no advantages over standard unisex knee prosthesis in terms of early clinical outcomes.
Abstract: Objectives: Current study is a comparative, prospective, randomized, short-term outcome study to compare the early results of Total Knee Arthroplasty in female patients using either standard or gender-specific knee prosthesis for treatment of advanced osteoarthritis of the knee joint. Background: Gender-specific knee athroplasty prosthesis is desig...
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Which Causal Relationships Can Reject or Accept the Significant Optimum Distribution Ratios Phases in the Triple Jump
Zerf Mohammed,
Mokkedes Moulay Idris,
Bengoua Ali,
Bendahmane Med Nasreddin
Issue:
Volume 3, Issue 4, July 2015
Pages:
73-78
Received:
9 June 2015
Accepted:
14 June 2015
Published:
4 July 2015
Abstract: The objectives of this study were to detect some causal relationships in significant differences optimum distribution ratios phases that the most sources agree that it varies from athlete to the other. Our subjects were the finalists (2009-2011) with Hop-dominated technique, 17 meter as minimum performance and the best performance in the world triple Jump with Jump-dominated technique, 18 meter as minimum performance in other comparison. In the absence of technological means in Algeria, our study explores the reports (IAAF) in order to answer: Which causal relationship explained or dismissed the Optimum distribution ratios phases in the two-practiced dominant technique (Hop and Jump) to achieve results? For this, we chose the analysis of the Regression to be compared, the impact phase distributions (hop, step and jump) charged with the results achieved in their test. Our goal for this research is: Improve search through the Optimum use of data results champions. Find a causal relationship between dominant technique and results as research topic in Optimum ratios phases. The most important results obtained: Optimum distribution ratios phases in the hop-dominated technique varies from athlete to other because the respect of the model theories Russian requires the Stride length of the three phases typically to (39%: 30%: 31%).Optimum distribution ratios phases in the jump-dominated technique should be us as optimum phase ratio in condition that the Stride length of the three phases typically to (34%29%37%).
Abstract: The objectives of this study were to detect some causal relationships in significant differences optimum distribution ratios phases that the most sources agree that it varies from athlete to the other. Our subjects were the finalists (2009-2011) with Hop-dominated technique, 17 meter as minimum performance and the best performance in the world trip...
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Electromyographic Analysis of Selected Upper Extremity Muscles during Jump Throwing in Handball
Sherif Ali Taha,
Abdel-Rahman Ibrahim Akl,
Mohamed Ahmed Zayed
Issue:
Volume 3, Issue 4, July 2015
Pages:
79-84
Received:
19 June 2015
Accepted:
29 June 2015
Published:
8 July 2015
Abstract: The purpose of this study was to determine upper extremity selected muscles activity of throwing performance in handball and work-loading to determine the percentage contribution of the muscles that more activation during throwing performance. Five male high level handball players participated in this study were (age: 20.5 ± 0.53 years; body mass: 81.00 ± 3.16 kg; height: 186.5 ± 3.69 cm). The EMG activity of the selected upper extremity muscles was measured using an 16-channel surface EMG system (ME6000 telemetric hardware system, Mega Electronics Ltd., FINLAND), Bipolar, Ag/AgCl surface electrodes (SKINTACT, FS-521), Innsbruck, Austria) were placed over the motor point of each muscle, and the EMG signals were acquired at a sampling rate of 1000 Hz with the MEGAWIN version 3.1-b12 software. Results showed the activities and arrangement of selected muscles were Deltoid muscle - medial part 1268.20±133.93 (38.70%), Flexor of the wrist 462.00±89.04 (16.30%), Flexor carpi ulnaris 439.30±33.87 (14.40%), Biceps brachii muscle 364.90±31.34 (12.90%), Rectus abdominis muscle 314.80±48.94 (9.70%), and Pectoralis major muscle 225.90±36.70 (8.00%). The rational for using sEMG to study muscle activation during a standardized jump throwing in handball is to provide a better understanding of muscle activation during this sport specific movement and muscle contributions during jump throwing in handball, and these data may be important for handball's coaches to jump throwing performance training.
Abstract: The purpose of this study was to determine upper extremity selected muscles activity of throwing performance in handball and work-loading to determine the percentage contribution of the muscles that more activation during throwing performance. Five male high level handball players participated in this study were (age: 20.5 ± 0.53 years; body mass: ...
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