Impact of preoperative varus deformity on postoperative mechanical alignment and long-term results of “mechanical” aligned total knee arthroplasty

In this study, we aimed to determine whether (1) greater degrees of preoperative varus deformity increase the incidence of varus-aligned TKAs and (2) residual varus alignment improves the long-term survival rate in TKAs with preoperative varus deformity.MethodsWe retrospectively reviewed 905 primary TKAs for varus-type osteoarthritis from November 1998 to June 2009. The mean follow-up was 8.23 years (± 3.47 years). We measured pre- and postoperative mechanical hip-knee-ankle axis angle (HKA) on full-length standing radiographs to assess the severity of preoperative varus deformities, defined as mild (0° 
Source: Orthopaedics and Traumatology: Surgery and Research - Category: Orthopaedics Source Type: research

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We describe, in this article, the hinged joint distraction technique. A total of 50 patients with posttraumatic ankle osteoarthritis with a mean age of 40.0±8.5 years were included in a prospective randomized study: 25 patients in ankle debridement alone group and 25 patients in debridement and hinged ankle distraction group. The mean follow-up was 46±12 months (range: 36 to 78 mo). The clinical and radiographic outcomes were evaluated at the 6-month and 3-year follow-up using the Visual Analog Scale (VAS), American Orthopaedic Foot and Ankle Society (AOFAS) hindfoot score, SF-36 quality of life score,...
Source: Techniques in Foot and Ankle Surgery - Category: Orthopaedics Tags: Special Focus Source Type: research
AbstractPurposeThe purpose of this study was to analyze the long-term clinical and radiological outcomes of patients who underwent closing-wedge High Tibial Osteotomy (HTO) for the treatment of medial compartment osteoarthritis and to evaluate the conversion rate to knee arthroplasty.MethodsA retrospective, non-randomized, monocentric study was performed in our Institution considering 166 patients between 1989 and 2012. The final population was composed by 82 patients (94 knees), median age at time of operation was 53 (range 45 –73) years. All patients were evaluated clinically (HSS Score, Tegner Scale, VAS and Crosb...
Source: Knee Surgery, Sports Traumatology, Arthroscopy - Category: Orthopaedics Source Type: research
In conclusion, although the incidence of heterotopic ossification after TAA is considerable, there is insufficient literature to suggest that heterotopic ossification after TAA impacts range of motion or functional outcome.
Source: The Journal of Foot and Ankle Surgery - Category: Orthopaedics Source Type: research
Abstract It is controversial whether supramalleolar osteotomy is suitable for Takakura Stage 3B osteoarthritis or not. The aim of this study was to evaluate the outcomes of supramalleolar osteotomy in patients with Takakura 3B osteoarthritis. From February 2008 to August 2013, supramalleolar osteotomy was performed in 21 patients matching the inclusion criteria. The mean patient age at operation was 53.7±5.8 years (range: 39 to 61 years). The mean duration of follow-up was 87.7±19.5 months (range: 61 to 125 months). The radiologic evaluation included the tibial articular surface (TAS) angle, tibial l...
Source: Biomed Res - Category: Research Authors: Tags: Biomed Res Int Source Type: research
ConclusionsThe study demonstrated comparable postoperative functional outcome and quality of life. However, rate of postoperative revision surgery was substantially higher in ankle debridement alone group.Level of evidenceRandomized controlled study, Level I.
Source: Knee Surgery, Sports Traumatology, Arthroscopy - Category: Orthopaedics Source Type: research
This study was designed to evaluate the effectiveness of showing patients the change in their standing posture, before and after total knee replacement, using standing photographs (anterior, posterior, and lateral view), on improving self-reported quality of life and satisfaction. Full-length lower extremity radiographs and standing photographs were obtained prior to total knee replacement and 6 months after surgery in the study group. In the control group, radiographs and photographs were not obtained. The hip–knee–ankle angle and mechanical axis deviation were compared between the two limbs and two groups. Th...
Source: Journal of Knee Surgery - Category: Orthopaedics Authors: Tags: Original Article Source Type: research
Conclusions: Ochronosis is a very rare disease in Asia. This paper supplies new information for study of this disease. The mechanism is still unknown right now. Further studies will be necessary.
Source: Medicine - Category: Internal Medicine Tags: Research Article: Clinical Case Report Source Type: research
The objective of this study was to assess outcomes in 26 patients managed with 1S-TKA-TO.Hypothesis1S-TKA-TO produces satisfactory clinical and anatomical outcomes and is not associated with higher morbidity rates compared to TKA alone or two-stage TKA-TO.Material and methodsA prospective study was conducted in 25 patients (26 knees) managed with 1S-TKA-TO between 1995 and 2014. There were 16 males and 9 females with a mean age of 64 years (range, 29–80 years) and a mean body mass index of 29.6 (range, 24–49). The EKD was constitutional in 14 knees, post-traumatic in 5 knees, and induced by TO in 7 knees. None ...
Source: Orthopaedics and Traumatology: Surgery and Research - Category: Orthopaedics Source Type: research
The objective of this study was to assess clinical and radiological outcomes and morbidity (complications and revisions) in 6 patients managed with S1-TKA-FO.Hypothesis1S-TKA-FO produces satisfactory outcomes and is not associated with higher morbidity rates compared to two-stage TKA-TO or TKA with intra-articular EKD correction, while also significantly shortening total treatment duration.Material and methodsA prospective study was performed in 6 patients managed with 1S-TKA-FO between 1999 and 2011; mean age was 64 years (range, 59–72 years) and mean body mass index was 29.5 (range, 26–35). The EKD was consis...
Source: Orthopaedics and Traumatology: Surgery and Research - Category: Orthopaedics Source Type: research
Semin Musculoskelet Radiol 2019; 23: 177-194 DOI: 10.1055/s-0038-1677466End-stage ankle osteoarthritis often significantly impacts patients' quality of life. This can be managed surgically either by ankle arthrodesis or total ankle arthroplasty (TAA). Although ankle arthrodesis is considered by some as the standard-of-care surgical option for this condition, it restricts range of motion and may lead to accelerated osteoarthritis of neighboring joints. Better understanding of ankle biomechanics, the biological effects of orthopaedic devices, and new surgical techniques have led to significant improvements in the designs of ...
Source: Seminars in Musculoskeletal Radiology - Category: Radiology Authors: Tags: Review Article Source Type: research
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