A prospective study will be performed to compare the clinical outcome after total knee arthroplasty (TKA) using two different alignment systems: an extramedullary system versus an intramedullary system. The extramedullary femoral alignment system is newly designed. These two systems are used to make the distal femoral resection in 100 patients in a random order.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
100
EM and IM alignment systems are used to make the distal femoral cut in a random order.
Zhihong Xu
Nanjing, Jiangsu, China
RECRUITINGImaging tests
Evaluate the X-ray changes. Measuring the hip-knee-ankle (HKA) angle by x-ray films
Time frame: pre surgery and 3, 12 months post surgery
Assess the changes of KSS scores
KSS scores will be recorded.
Time frame: pre surgery and 3, 12 months post surgery
Assess the changes of SF-36 scores
SF-36 scores will be recorded
Time frame: pre surgery and 3, 12 months post surgery
Assess the changes of WOMAC scores
WOMAC scores will be recorded.
Time frame: pre surgery and 3, 12 months post surgery
deep vein thrombosis (DVT)
DVT was diagnosed by 3 experienced radiologists 96 according to Robinov group's criterion.
Time frame: pre surgery and 3, 12 months post surgery
Range of knee motion
Range of knee motion will be recorded.
Time frame: pre surgery and 3, 12 months post surgery
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