Extra-articular Deformity Is Always Correctable Intra-articularly: In the Affirmative

Koenig, Jonathan H.; Maheshwari, Aditya V.; Ranawat, Amar S.; Ranawat, Chitranjan S.

doi:10.3928/01477447-20090728-22

Cited by 29 publications

(17 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…reported some cases of instability after intraarticular correction and TKA due to asymmetric bone resection, Koenig et al 10. believed this could be compensated with soft tissue balancing and a stabilized prosthesis.…”

Section: Discussionmentioning

confidence: 99%

Total knee arthroplasty in extra articular deformities: A series of 36 knees

Rajgopal

Vasdev

Dahiya

et al. 2013

IJOO

View full text Add to dashboard Cite

Background:The presence of extra articular deformities either in the femur or the tibia with arthritis of the knee makes total knee arthroplasty (TKA) technically demanding. The purpose of this study is to report outcomes with Total Knee Arthroplasty in patients with arthritis of the knee associated with extra articular deformity by intraarticular resection and soft tissue balancing.Materials and Methods:Thirty six knees (32 patients) who had arthritis of the knee associated with extra articular deformity, underwent total knee arthroplasty between 1999 and 2006 were included in this retrospective analysis. All patients had intraarticular resection with soft tissue balancing to correct the deformity. Full length weight bearing anteroposterior X-rays, Knee society scores, and Knee range of motion was recorded pre- and postoperatively.Results:The mean period of followup was 85 months (range 42-120 months). The deformities amenable to correction by intraarticular resection in our series were Femur- Coronal plane 11°-18° (mean 16.2°) Saggital plane 0°-15° (mean 10.1°) Tibia - Coronal plane 12°-24° (mean 21°). There was an improvement in the range of motion from mean of 54° preoperatively to 114° postoperatively (P value < 0.05). The Knee Society- Knee Score improved from 37 points to 85 points postoperatively (P value < 0.05). The functional score improved from a mean value of 19 to a mean of 69.5 at followup (P < 0.01). The preoperative hip knee ankle angle in the coronal plane improved from a mean of 14° ± 2° varus (26° varus to 4° valgus) to a mean of 2° ± 0.6° varus (6° varus to 2° valgus).Conclusion:With a good preoperative planning and templating, intraarticular bone resection and good soft tissue balancing both in flexion and extension, correction would be possible in majority of extraarticular deformities.

show abstract

Section: Discussionmentioning

confidence: 99%

Total knee arthroplasty in extra articular deformities: A series of 36 knees

Rajgopal

Vasdev

Dahiya

et al. 2013

IJOO

View full text Add to dashboard Cite

show abstract

“…Total hip and total knee arthroplasty are considered to be one of the most successful orthopedic procedures [131,132]. Recent technological advances are likely to extend the longevity of the prostheses used in these procedures.…”

Section: What Have We Learned About Implant Design?mentioning

confidence: 99%

Orthopedic Implant Retrieval and Failure Analysis

Jones

Tsao²,

Topoleski

2012

Degradation of Implant Materials

View full text Add to dashboard Cite

Orthopedic devices make up a major percentage of the medical devices being implanted today. Success rates exceeding 95% have been reported. However, their longevity is compromised by fatigue, wear, corrosion, and other degradative mechanisms. Adverse biologic responses to products from these different mechanisms can lead to significant bone loss and may even compromise subsequent surgeries. It is imperative that we fully understand what mechanisms are in play and carefully evaluate strategies to minimize, if not eliminate, these degradation processes. Devices retrieved at revision surgery and at autopsy have provided us with important information regarding the performance of orthopedic implants. Surface characterization of the implant, biomechanical analyses, and histological analysis of the tissues surrounding the implant can provide us with information not available through other sources. This chapter will review the significance of retrieved implants to the long-term survival of these implants.

show abstract

“…For patients with osteoarthritis of the knee and an extra-articular deformity, if feasible we recommend TKA with intra-articular bone resection and soft tissue balancing. This method has advantages like a small wound, shorter length of stay in the hospital and also avoids the complications like nonunion, delayed union, the chances of infection, fixation failure and the other complications [1][2][3][4][10][11][12] …”

Section: The Choice Of Prosthesismentioning

confidence: 99%

“…Combined with data from references [1][2][3][4][5][6] and from our experience, we believe that when extra-articular deformities are less than 20°in the coronal plane, one-stage TKR with intra-articular correction and soft tissue balancing is feasible and effective. There are two problems to consider: first, the ligament instability caused by intra-articular correction of the femoral deformity is different from the tibial deformity.…”

mentioning

confidence: 99%

One-stage total knee arthroplasty for patients with osteoarthritis of the knee and extra-articular deformity

Zhang

Shahzad

Cao

2012

International Orthopaedics (SICOT)

View full text Add to dashboard Cite

Purpose The purpose of this paper is to review our experience and study the feasibility and clinical results of onestage total knee arthroplasty (TKA) for patients with osteoarthritis of the knee with extra-articular deformity. Methods Nine patients with osteoarthritis of the knee associated with extra-articular deformity underwent one-stage TKA from June 2006 to April 2010. There were two men and seven women, with an average age of 51 years (range 34-69 years); four of them had tibial deformities and five had femoral deformities. Eight of the cases resulted from malunion after fracture healing and one from femoral recurvatum. Six of the cases had uniplanar and three had biplanar deformities. The average angles of the femoral deformities were 13.3°in the coronal plane (8-22) and 11.3°in the sagittal plane (6-15); one femur had 10°external rotational deformity. Tibial deformity of 16°in the coronal plane (11-22) was noted, and one had sagittal plane deformity of 21°. Results All patients were followed for an average of 29 months. The average Hospital for Special Surgery (HSS) knee score improved from 18.7 points pre-operatively to 89.8 points at the time of last follow-up; the range of knee motion improved from 46.7°preoperatively to 100.6°postop-eratively. The average angle of mechanical axis deviation was restored from 11.8°preoperatively to 1°postoperatively.

show abstract

Extra-articular Deformity Is Always Correctable Intra-articularly: In the Affirmative

Cited by 29 publications

References 6 publications

Total knee arthroplasty in extra articular deformities: A series of 36 knees

Total knee arthroplasty in extra articular deformities: A series of 36 knees

Orthopedic Implant Retrieval and Failure Analysis

One-stage total knee arthroplasty for patients with osteoarthritis of the knee and extra-articular deformity

Contact Info

Product

Resources

About