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Related Concept Videos

Knee Joint01:23

Knee Joint

The knee joint is the most complicated joint in the body. It consists of three articulations– two tibiofemoral and one patellofemoral. As is characteristic of synovial joints, the knee joint has a thin articular capsule that partially surrounds this joint cavity. Additionally, several ligaments, muscles, and cartilaginous structures support the movement of the knee.
A total of seven ligaments support the knee joint. The patellar ligament, which is also attached to the quadriceps femoris group...

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Related Experiment Video

Updated: Jun 24, 2026

Treatment of Ankle Osteoarthritis with Total Ankle Replacement Through a Lateral Transfibular Approach
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[Mini-subvastus approach for total knee replacement].

Andreas Halder1, Alexander Beier, Wolfram Neumann

  • 1Klinik für Endoprothetik, Sana Kliniken, Sommerfeld. orthopaede@yahoo.de

Operative Orthopadie Und Traumatologie
|March 28, 2009
PubMed
Summary
This summary is machine-generated.

Minimally invasive total knee replacement using the subvastus approach preserves the extensor mechanism, leading to less pain and better flexion. However, this technique requires advanced surgical skill and longer operating times.

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Area of Science:

  • Orthopedic Surgery
  • Minimally Invasive Procedures
  • Total Knee Replacement

Background:

  • The subvastus approach to total knee replacement (TKR) is a minimally invasive technique designed to preserve the extensor apparatus.
  • This approach involves a direct anterior incision, lateralization of the patella, and soft-tissue-referenced bone resections.

Purpose of the Study:

  • To evaluate the efficacy and outcomes of a modified minimally invasive subvastus approach for total knee replacement.
  • To compare the subvastus approach with the traditional parapatellar approach in terms of operative precision, patient pain, and range of motion.

Main Methods:

  • A randomized study involving 100 patients undergoing total knee replacement, comparing the parapatellar and subvastus approaches.
  • The subvastus technique involved a central skin incision, subcutaneous mobilization of the vastus medialis, and specific bone resection and soft-tissue balancing procedures.
  • Postoperative management included early weight-bearing and continuous passive motion (CPM).

Main Results:

  • No significant differences in radiological outcomes or leg alignment were observed between the two groups.
  • Patients undergoing the minimally invasive subvastus approach reported less pain and achieved a greater range of flexion (110 degrees vs. 95 degrees) at 6 weeks postoperatively.
  • Two cases of delayed wound healing were noted in the minimally invasive group, and the technique was found to be demanding with longer operating times.

Conclusions:

  • The modified minimally invasive subvastus approach for total knee replacement offers potential benefits in terms of reduced pain and improved early flexion.
  • While effective, the technique is technically demanding and requires further investigation for long-term outcomes.
  • Surgeons should consider the increased surgical complexity and potential for wound healing complications.