Prevalence of Coronal Femoral Bowing in the Egyptian Arthritic Knee

To Detect the Prevalence Of Coronal Femoral Bowing in Egyptian arthritic knee. The restoration of normal coronal alignment of the lower extremity is very important to surgeons who perform reconstructive surgery of the knee, such as total knee arthroplasty (TKA). The importance of achieving normal coronal alignment of the lower extremity after TKA is widely recognized . TKAs with coronal malalignment tend to fail earlier than those with neutral alignment. 8 Coronal alignment is considered key to the function and longevity of a TKA. However, most studies do not consider femoral and tibial anatomical features such as coronal femoral bowing and the effects of these features and subsequent alignment on function after TKA are unclear investigators therefore determined the prevalence of coronal femoral bowing, femoral condylar orientation (mLDFA ) , and tibia plateau inclination (mMPTA ) in osteoarthritic Egyptian population

Study Overview

• Status: Unknown
• Conditions: Arthritis Knee
• Intervention / Treatment: Device: X-ray

Detailed Description

Radiological methods :

1) standing anteroposterior radiographs of the full-length lower limb with patients in the standing position. ( HKA Long Film Radiographs ).

Measurements :

1. mechanical hip-knee-ankle axis (HKA) angle: the angle formed by the mechanical axes of the femur and tibia
2. anatomical hip-knee-ankle axis (HKA) angle: the angle formed by the anatomical axes of the femur and tibia
3. For condylar orientation : the mechanical lateral distal femoral angle (mLDFA) was defined as an angle formed by the mechanical axis of the femur and the line connecting the distal ends of the medial and lateral femoral condyles of the femur.
4. For tibia plateau inclination : the mechanical lateral proximal tibial angle (mLPTA) was defined as an angle formed by the mechanical axis of the tibia and the articular surface of the proximal tibia .
5. Coronal femoral bowing Using the method of Yau et al. : the femoral diaphysis was divided into four equal parts, . Because Yau et al. didn't exactly describe the femoral diaphysis, we had defined the femoral diaphysis from the lower border of the lesser trochanter to upper border of the distal femoral segment which is defined by a square whose sides have the same length as the widest part of the femoral condyle so called rule of square (from the lowest level of the lesser trochanter to 5 cm above the lowest level of the lateral femoral condyle), and the midpoint of the endosteal intramedullary canal was depicted in each quarter. The angulation between midlines drawn in the proximal and distal quarters of the femoral diaphysis will be measured

• Study Type: Observational
• Enrollment (Anticipated): 400

Contacts and Locations

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 20 years to 110 years (Adult, Older Adult)
• Accepts Healthy Volunteers: N/A
• Genders Eligible for Study: All

• Sampling Method: Non-Probability Sample

Study Population

any Egyptian patient who suffer from advanced osteoarthritis schedual for TKR at any age ,any sex

Description

Inclusion Criteria:

-Any advanced Osteoarthritic patient schedual for TKA

Exclusion Criteria:

• History of femoral or tibial fracture or osteotomy around the knee .
• Presence of a congenital anomaly in the femur or tibia .
• History of prior knee or hip arthroplasty .
• Diagnosis other than primary osteoarthritis (RA-inflmmatory arthritis..etc) .
• Position in radiographs preventing complete evaluation of radiographic variables .

Study Plan

How is the study designed?

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
To asses the Prevalence Of Coronal Femoral Bowing in Egyptian arthritic knee	Coronal Femoral Bowing in Egyptian arthritic knee may be prevalent and its effect on TKR will be measured and reported	Baseline

Collaborators and Investigators

• Sponsor: Kerolos Naiem Shehata Rofael

Publications and helpful links

General Publications

• Kobayashi H, Akamatsu Y, Kumagai K, Kusayama Y, Aratake M, Saito T. Influence of coronal bowing on the lower alignment and the positioning of component in navigation and conventional total knee arthroplasty. Orthop Traumatol Surg Res. 2017 Apr;103(2):251-256. doi: 10.1016/j.otsr.2016.11.017. Epub 2017 Jan 11.
• Nakano N, Matsumoto T, Hashimura M, Takayama K, Ishida K, Araki D, Matsushita T, Kuroda R, Kurosaka M. Coronal lower limb alignment in normal knees--A radiographic analysis of 797 normal knee subjects. Knee. 2016 Mar;23(2):209-13. doi: 10.1016/j.knee.2015.12.004. Epub 2016 Jan 7.

Study record dates

Study Major Dates

• Study Start (Anticipated): May 1, 2019
• Primary Completion (Anticipated): May 1, 2022
• Study Completion (Anticipated): May 1, 2022

Study Registration Dates

• First Submitted: March 12, 2019
• First Submitted That Met QC Criteria: March 12, 2019
• First Posted (Actual): March 14, 2019

Study Record Updates

• Last Update Posted (Actual): March 15, 2019
• Last Update Submitted That Met QC Criteria: March 13, 2019
• Last Verified: March 1, 2019

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Joint Diseases; Musculoskeletal Diseases; Arthritis
• Other Study ID Numbers: coronal femoral Bowing

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: UNDECIDED

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No