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Minimally invasive total knee arthroplasty: surgical implications for recovery.

ABSTRACT: Despite growing interest in minimally invasive surgery (MIS) techniques for total knee arthroplasty (TKA), few randomized controlled trials have compared MIS and conventional TKA using a combination of functional performance, knee pain, knee range of motion (ROM), and surgical and radiographic outcomes.A prospective, randomized investigation comparing early outcomes of TKA using conventional or MIS approaches (n = 44). Patients were assessed preoperatively, 48 hours, 4 and 12 weeks postoperatively by blinded evaluators. Outcome measures included timed-up-and-go, 100-ft walk, knee pain, passive knee ROM, Knee Society Score, blood loss, tourniquet time, hospital length of stay, surgical complications, and radiographic outcomes.No significant differences in functional performance, knee pain, knee ROM, surgical, or radiographic outcomes were observed between groups at 48 hours, 4 or 12 weeks postoperatively.While surgical and radiographic outcomes were not compromised with MIS surgery, there were also no improvements in pain, ROM, or functional performance with MIS TKA.

SUBMITTER: Dayton MR

PROVIDER: S-EPMC4162390 | biostudies-literature | 2013 Jun

REPOSITORIES: biostudies-literature

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Minimally invasive total knee arthroplasty: surgical implications for recovery.

Dayton Michael R MR Bade Michael J MJ Muratore Tim T Shulman Benjamin C BC Kohrt Wendy M WM Stevens-Lapsley Jennifer E JE

The journal of knee surgery 20121112 3

<h4>Background</h4>Despite growing interest in minimally invasive surgery (MIS) techniques for total knee arthroplasty (TKA), few randomized controlled trials have compared MIS and conventional TKA using a combination of functional performance, knee pain, knee range of motion (ROM), and surgical and radiographic outcomes.<h4>Methods</h4>A prospective, randomized investigation comparing early outcomes of TKA using conventional or MIS approaches (n = 44). Patients were assessed preoperatively, 48 ...[more]

PMID: 23288738

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Project description:ObjectiveTo explore the outcome and surgical technique of minimally invasive unicompartmental knee arthroplasty (UKA) for spontaneous osteonecrosis of the knee.MethodsTwenty-seven patients with medial compartmental spontaneous osteonecrosis treated by minimally invasive Oxford phase 3 UKA from January 2009 to June 2013 were reviewed retrospectively. Twelve subjects were men and 15 women, with an average age of 64.6 ± 8.6 years (52-82 years). At the time of diagnosis, 11 patients had with grade III necrosis and 16 grade IV according to Mont's classification. Pain, range of motion (ROM) and Hospital for Special Surgery (HSS) knee scores were evaluated before and after UKA. Pre-and postoperative alignment of the lower limbs was measured and compared. Postoperative radiographic assessments were made according to the guidelines proposed by the Oxford group at the final follow-up.ResultsAll patients were followed for a mean time of 27.8 ± 15.9 months (6-59 months). There were no serious adverse events, such as infection, bearing dislocation, aseptic loosening, pulmonary embolism, deep venous thrombosis, cardio-cerebral vascular incident or psychological problems. One revision was required for unrelated causes (fracture of tibia plateau) 3 years after arthroplasty. One femoral component was tilted with a postoperative radiographic angle >10°. One radiolucent line was observed in a patient with spontaneous osteonecrosis of the knee. The two patients with implant failure had no symptoms at last follow-up. Visual analogue scale scores decreased from 6.9 ± 0.9 to 2.0 ± 1.1 (t = 19.27, P = 0.00). Pain was relieved in 96.3% of subjects (26/27). The mean post-operative ROM and femorotibial angle were 125.7° ± 9.6° and 177.7° ± 3.1°, respectively. HSS scores increased from 61.3 ± 9.7 to 93.0 ± 4.8 (t = 14.46, P = 0.00). Of the 27 patients, 26 (96.3%) were satisfied with the outcome of this surgical procedure.ConclusionMinimally invasive UKA is an effective means of managing spontaneous osteonecrosis of the knee. The short-term outcome of UKA is encouraging.

Project description:BackgroundMinimally invasive total hip arthroplasty (MITHA) remains considerably controversial. Limited visibility and prosthesis malposition increase the risk of post-surgical complications compared to those of the traditional method.MethodsA meta-analysis was undertaken of all published databases up to May 2011. The studies were divided into four subgroups according to the surgical approach taken. The radiological outcomes and complications of minimally invasive surgery were compared to traditional total hip arthroplasty (TTHA) using risk ratio, mean difference, and standardized mean difference statistics.ResultsIn five studies involving the posterolateral approach, no significant differences were found between the MITHA groups and the TTHA groups in the acetabular cup abduction angle (p?=?0.41), acetabular anteversion (p?=?0.96), and femoral prosthesis position (p?=?0.83). However, the femoral offset was significantly increased (WMD?=?3.00; 95% CI, 0.40-5.60; p?=?0.02). Additionally, there were no significant differences among the complications in both the groups (dislocations, nerve injury, infection, deep vein thrombosis, proximal femoral fracture) and revision rate (p>0.05). In three studies involving the posterior approach, there were no significant differences in radiological outcomes or all other complications between MITHA or TTHA groups (p>0.05). Three studies involved anterolateral approach, while 2 studies used the lateral approach. However, the information from imaging and complications was not adequate for statistical analysis.ConclusionsPosterior MITHA seems to be a safe surgical procedure, without the increased risk of post-operative complication rates and component malposition rates. The posterolateral approach THA may lead to increased femoral offset. The current data are not enough to reach a positive conclusion that lateral and anterolateral approaches will result in increased risks of adverse effects and complications at the prosthesis site.

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Minimally invasive total knee arthroplasty: surgical implications for recovery.

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Minimally invasive total knee arthroplasty: surgical implications for recovery.

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