A New Design of Miniplate Staple for High Tibial Osteotomy: Biomechanical Study

Bae, Dae Kyung; Moon, Mu Seong; Park, Bo Yeon; Kwon, Oh-Jun

doi:10.4055/jkoa.1995.30.5.1433

Cited by 6 publications

(8 citation statements)

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“…16,30,31 The aetiology of the decrease of inclination has been attributed to anterior collapse resulting from the difference in the subchondral bone 32,33 and the reduced strength of the osteotomised fragments. 34,35 The incidence of patella infera after osteotomy has been reported as 10% to 30%. 30,31 The postoperative decrease in the inclination of the tibial plateau has been reported as approximately 3° to 10°.…”

Section: Discussionsupporting

confidence: 89%

Open-wedge osteotomy of the proximal tibia with hemicallotasis

Nakamura¹,

Mizuta²,

Kudo³

et al. 2001

The Journal of Bone and Joint Surgery

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Conventional high tibial osteotomy for losteoarthritis of the medial compartment of the knee with closed-wedge or dome osteotomy (DMO) may produce shortening of the patellar tendon and loss of inclination of the proximal tibial plateau or of the offset of the tibial condyle relative to its bony axis. This can make subsequent total knee arthroplasty technically demanding. We undertook a prospective study comparing these changes after DMO with those after using open-wedge osteotomy hemicallotasis (HCO). A total of 50 knees with arthritis of the medial compartment in 46 consecutive patients was randomly allocated to either DMO or HCO. There were no significant differences between the groups with regard to age, gender, femorotibial angle before operation or the angle of correction. Radiological studies showed that HCO caused little change in the length of the patellar tendon or the inclination angle of the tibial plateau, while after DMO both gradually decreased. The degree of tibial condylar offset increased in both groups, but less so in the HCO group.

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Section: Discussionsupporting

confidence: 89%

Open-wedge osteotomy of the proximal tibia with hemicallotasis

Nakamura¹,

Mizuta²,

Kudo³

et al. 2001

The Journal of Bone and Joint Surgery

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“…3). 4,5 The final alignment was confirmed on the computer screen ( Fig. 4) using the image intensifier.…”

Section: Methodsmentioning

confidence: 99%

“…3 Advantages of the lateral closed-wedge osteotomy include the presence of broad metaphyseal opposing surfaces, offering quicker healing 1 and negating the risk of loss of correction, fixation failure, delayed union and nonunion and satisfactory long-term results have been reported. [4][5][6][7][8] However, there are potential risks of neurovascular injury and of creating additional difficulty when converting a knee with a previous osteotomy to a total knee replacement (TKR). 9,10 Several long-term studies indicate that accurate correction has been the leading predictor for success.…”

mentioning

confidence: 99%

“…[4][5][6]10 Conventional methods for determining the correction angle and wedge size include pre-operative radiological measurement and planning, intra-operative measurement with the help of a cable, grids with lead-impregnated reference lines, and a system that uses a jig. 4,11 However, it is difficult to obtain the ideal correction with conventional techniques because of the unreliability of preoperative planning. Occasionally, the conventional full-length leg radiograph is also inaccurate because of rotation of the lower extremity, and image parallax may also introduce a measurement error.…”

mentioning

confidence: 99%

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Closed-wedge high tibial osteotomy using computer-assisted surgery compared to the conventional technique

Bae

Song

Yoon

2009

The Journal of Bone and Joint Surgery. British volume

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We assessed the reliability, accuracy and variability of closed-wedge high tibial osteotomy (HTO) using computer-assisted surgery compared to the conventional technique. A total of 50 closed-wedge HTO procedures were performed using the navigation system, and compared with 50 HTOs that had been performed with the conventional technique. In the navigation group, the mean mechanical axis prior to osteotomy was varus 8.2 degrees, and the mean mechanical axis following fixation was valgus 3.6 degrees. On the radiographs the mean pre-operative mechanical axis was varus 7.3 degrees, and the mean post-operative mechanical axis was valgus 2.1 degrees . There was a positive correlation between the measured data taken under navigation and by radiographs (r > 0.3, p < 0.05). The mean correction angle was significantly more accurate in the navigation group (p < 0.002). The variability of the correction was significantly lower in the navigation group (2.3 degrees vs 3.7 degrees , p = 0,012). We conclude that navigation provides reliable real-time intra-operative information, may increase accuracy, and improves the precision of a closed-wedge HTO.

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“…1.1 (BrainLAB, Heimstetten, Germany) was used for medial compartment osteoarthritis with a varus deformity >10°. A miniplate staple (U&I Co., Uijeongbu, Korea) was used as a fixative 15) . Informed consent was obtained from all patients, none of whom declined to participate.…”

Section: Methodsmentioning

confidence: 99%

Comparison of Mechanical Axis and Dynamic Range Assessed with Weight Bearing Radiographs and Navigation System in Closed Wedge High Tibial Osteotomy

Bae

Lee

Cho

et al. 2017

Knee Surg Relat Res

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PurposeTo compare navigation and weight bearing radiographic measurements of mechanical axis (MA) before and after closed wedge high tibial osteotomy (HTO) and to evaluate post-osteotomy changes in MA assessed during application of external varus or valgus force.Materials and MethodsData from 30 consecutive patients (30 knees) who underwent computer-assisted closed-wedge HTO were prospectively analyzed. Pre- and postoperative weight bearing radiographic evaluation of MA was performed. Under navigation guidance, pre- and post-osteotomy MA values were measured in an unloaded position. Any change in the post-osteotomy MA in response to external varus or valgus force, which was named as dynamic range, was evaluated with the navigation system. The navigation and weight bearing radiographic measurements were compared.ResultsAlthough there was a positive correlation between navigation and radiographic measurements, the reliability of navigation measurements of coronal alignment was reduced after osteotomy and wedge closing. The mean post-osteotomy MA value measured with the navigation was 3.5°±0.8° valgus in an unloaded position. It was 1.3°±0.8° valgus under varus force and 5.8°±1.1° valgus under valgus force. The average dynamic range was >±2°.ConclusionsPotential differences between the postoperative MAs assessed by weight bearing radiographs and the navigation system in unloaded position should be considered during computer-assisted closed wedge HTO. Care should be taken to keep the dynamic range within the permissible range of alignment goal in HTO.

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A New Design of Miniplate Staple for High Tibial Osteotomy: Biomechanical Study

Cited by 6 publications

References 0 publications

Open-wedge osteotomy of the proximal tibia with hemicallotasis

Open-wedge osteotomy of the proximal tibia with hemicallotasis

Closed-wedge high tibial osteotomy using computer-assisted surgery compared to the conventional technique

Comparison of Mechanical Axis and Dynamic Range Assessed with Weight Bearing Radiographs and Navigation System in Closed Wedge High Tibial Osteotomy

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