Aetiology of Failure of Total Knee Arthroplastyand Functional Outcome of Revision Total Knee Arthroplasty
Tariq Ahmad, Abdus Samad Khan, Kamran Asghar, Waseemahmed, Raza Askari, Ahmed Raza Laghari
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ABSTRACT
Objective:The aim of this study is to determine the aetiology
of TKA failure and to measure the functional outcome of patients underwent
revision TKA.
Study Design:Prospective study
Place and Duration:In the department of Orthopedic, Mardan
Medical Complex, Mardan, Fauji Foundation Hospital, Rawalpindi and Muhammad
Medical Hospital, Mirpurkhas for duration of one year August 2020 to July 2021.
Methods:Total sixty patients of both genders were
presented in this study. Age of the patients was between 25-75 years.This
research included all patients who had previously had a primary total knee
replacement and had subsequently had a revision total knee arthroplasty.
Revision arthroplasty was warranted based on the evidence. WOMAC questionnaire
was used to evaluate the functional outcomes of revision total knee
arthroplasty after 8 months of follow-up treatment. Pre and post-operative
WoMAC scores were compared using the Student-t test and a P value was
determined. Statistical significance was defined as a p-value of 0.05 or less.
We used SPSS 20.0 to analyze all data.
Results:There were majority females 48 (80%) and 12
(20%) patients were males.Mean of the patients was age 61.5±4.45 years and had
mean Body mass indexwas 26.31±7.42 kg/m2. Majority of the cases 42
(70%) had left knee revision arthroplasty. Bilateral revision was performed in
9 (15%) cases and unilateral revision was done in 51 (85%) cases. Before
revision arthroplasty function score, stiffness score and WOMAC pain score was
significantly higher 70.8±6.12, 10.1±3.17 and 20.5±6.14 as compared to post
revision 11.7±6.19, 4.1±6.3 and 3.0±5.11 with p value <0.05.We found
infection was the most common aetiology of revision found in 27 (45%) cases
followed by stiffness in 15 (25%), loosening in 13 (21.7%) cases and
periprosthetic fracture found in 5 (8.3%) cases.
Conclusion: The results of our investigation led us to
the conclusion that infection was the most prevalent reason for revision
arthroplasty in our study population. When we performed revision arthroplasty,
the majority of our patients had satisfactory functional outcomes.
Keywords: Revision TKA, Aetiology, Outcomes
ABSTRACT
Objective:The aim of this study is to determine the aetiology
of TKA failure and to measure the functional outcome of patients underwent
revision TKA.
Study Design:Prospective study
Place and Duration:In the department of Orthopedic, Mardan
Medical Complex, Mardan, Fauji Foundation Hospital, Rawalpindi and Muhammad
Medical Hospital, Mirpurkhas for duration of one year August 2020 to July 2021.
Methods:Total sixty patients of both genders were
presented in this study. Age of the patients was between 25-75 years.This
research included all patients who had previously had a primary total knee
replacement and had subsequently had a revision total knee arthroplasty.
Revision arthroplasty was warranted based on the evidence. WOMAC questionnaire
was used to evaluate the functional outcomes of revision total knee
arthroplasty after 8 months of follow-up treatment. Pre and post-operative
WoMAC scores were compared using the Student-t test and a P value was
determined. Statistical significance was defined as a p-value of 0.05 or less.
We used SPSS 20.0 to analyze all data.
Results:There were majority females 48 (80%) and 12
(20%) patients were males.Mean of the patients was age 61.5±4.45 years and had
mean Body mass indexwas 26.31±7.42 kg/m2. Majority of the cases 42
(70%) had left knee revision arthroplasty. Bilateral revision was performed in
9 (15%) cases and unilateral revision was done in 51 (85%) cases. Before
revision arthroplasty function score, stiffness score and WOMAC pain score was
significantly higher 70.8±6.12, 10.1±3.17 and 20.5±6.14 as compared to post
revision 11.7±6.19, 4.1±6.3 and 3.0±5.11 with p value <0.05.We found
infection was the most common aetiology of revision found in 27 (45%) cases
followed by stiffness in 15 (25%), loosening in 13 (21.7%) cases and
periprosthetic fracture found in 5 (8.3%) cases.
Conclusion: The results of our investigation led us to
the conclusion that infection was the most prevalent reason for revision
arthroplasty in our study population. When we performed revision arthroplasty,
the majority of our patients had satisfactory functional outcomes.
Keywords: Revision TKA, Aetiology, Outcomes