Limits...
Atraumatic patellar prosthesis dislocation with patellar tendon injury following a total knee arthroplasty: a case report.

Singh VK, Singh PK, Singh Y, Singh A, Javed S, Abdunabi M - J Med Case Rep (2010)

Bottom Line: Total knee arthroplasty is a well-established procedure with gratifying results.The patient was treated successfully through a revision of the patellar component and tendon repair.A thorough understanding of knee biomechanics is imperative in performing total knee arthroplasty in order to achieve a better functional outcome and to prevent early prosthetic failure.

View Article: PubMed Central - HTML - PubMed

Affiliation: Luton and Dunstable Hospitals NHS Foundation Trust, Lewsey Road, Luton, LU4 0DZ, UK.

ABSTRACT

Introduction: Total knee arthroplasty is a well-established procedure with gratifying results. There is no consensus in the literature whether to routinely resurface the patella while performing total knee arthroplasty or not. Although an extremely rare occurrence in clinical practice, patellar prosthesis dislocation is a possible complication resulting from total knee arthroplasty.

Case presentation: We report a rare case of atraumatic spontaneous dislocation of patellar prosthesis in a 63-year-old Caucasian man of British origin with patellar tendon injury. The patient was treated successfully through a revision of the patellar component and tendon repair. In two years follow-up the patient is asymptomatic with no sign of loosening of his patellar prosthesis.

Conclusions: A thorough understanding of knee biomechanics is imperative in performing total knee arthroplasty in order to achieve a better functional outcome and to prevent early prosthetic failure.

No MeSH data available.


Related in: MedlinePlus

Sagittal radiograph of the knee showing dislocated patellar prosthesis.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC2821390&req=5

Figure 1: Sagittal radiograph of the knee showing dislocated patellar prosthesis.

Mentions: The patient made a good recovery after the operation, but he complained of aching and clicking when flexing his knee from time to time. His symptoms improved and he was discharged from the clinic within one year. He presented again in January 2006 with a painful locked knee following a sudden flexion movement of his right knee. Radiographs taken in casualty showed that the prosthesis was dislodged and had displaced into the infrapatellar area (Figure 1). His blood test and inflammatory markers were unremarkable. Knee aspirate performed in theater to rule out infection was unremarkable.


Atraumatic patellar prosthesis dislocation with patellar tendon injury following a total knee arthroplasty: a case report.

Singh VK, Singh PK, Singh Y, Singh A, Javed S, Abdunabi M - J Med Case Rep (2010)

Sagittal radiograph of the knee showing dislocated patellar prosthesis.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2821390&req=5

Figure 1: Sagittal radiograph of the knee showing dislocated patellar prosthesis.
Mentions: The patient made a good recovery after the operation, but he complained of aching and clicking when flexing his knee from time to time. His symptoms improved and he was discharged from the clinic within one year. He presented again in January 2006 with a painful locked knee following a sudden flexion movement of his right knee. Radiographs taken in casualty showed that the prosthesis was dislodged and had displaced into the infrapatellar area (Figure 1). His blood test and inflammatory markers were unremarkable. Knee aspirate performed in theater to rule out infection was unremarkable.

Bottom Line: Total knee arthroplasty is a well-established procedure with gratifying results.The patient was treated successfully through a revision of the patellar component and tendon repair.A thorough understanding of knee biomechanics is imperative in performing total knee arthroplasty in order to achieve a better functional outcome and to prevent early prosthetic failure.

View Article: PubMed Central - HTML - PubMed

Affiliation: Luton and Dunstable Hospitals NHS Foundation Trust, Lewsey Road, Luton, LU4 0DZ, UK.

ABSTRACT

Introduction: Total knee arthroplasty is a well-established procedure with gratifying results. There is no consensus in the literature whether to routinely resurface the patella while performing total knee arthroplasty or not. Although an extremely rare occurrence in clinical practice, patellar prosthesis dislocation is a possible complication resulting from total knee arthroplasty.

Case presentation: We report a rare case of atraumatic spontaneous dislocation of patellar prosthesis in a 63-year-old Caucasian man of British origin with patellar tendon injury. The patient was treated successfully through a revision of the patellar component and tendon repair. In two years follow-up the patient is asymptomatic with no sign of loosening of his patellar prosthesis.

Conclusions: A thorough understanding of knee biomechanics is imperative in performing total knee arthroplasty in order to achieve a better functional outcome and to prevent early prosthetic failure.

No MeSH data available.


Related in: MedlinePlus