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Related Concept Videos

Knee Joint01:23

Knee Joint

3.4K
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...
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In Vitro Application of a Wireless Sensor in Flexion-Extension Gap Balance of Unicompartmental Knee Arthroplasty
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[Osteotomy around the knee vs. unicondylar knee replacement].

P Lobenhoffer1, J D Agneskirchner

  • 1SportsClinic Germany, Uhlemeyerstraße 16, 30175, Hannover, Deutschland, philipp.lobenhoffer@sportsclinicgermany.com.

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Summary

Osteotomy and unicondylar knee replacement offer excellent outcomes for knee osteoarthritis. Osteotomy is preferred for constitutional deformities, while unicondylar replacement suits medial osteoarthritis without deformity.

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Area of Science:

  • Orthopedic surgery
  • Knee joint biomechanics
  • Osteoarthritis treatment

Background:

  • Unilateral knee osteoarthritis can be treated with osteotomy or unicondylar knee replacement.
  • Indications for each procedure differ significantly.

Purpose of the Study:

  • To compare the indications and outcomes of osteotomy versus unicondylar knee replacement for unilateral knee osteoarthritis.
  • To provide guidance on selecting the appropriate surgical procedure.

Main Methods:

  • Preoperative analysis includes weight-bearing long-leg radiographs, clinical stability tests, and varus-valgus-stress radiographs.
  • Osteotomy utilizes a biplanar cutting technique and plate fixator.
  • Unicondylar knee replacement can be performed with a minimally invasive, quadriceps-sparing arthrotomy.

Main Results:

  • A multicenter study of 533 patients showed good functional outcomes and low complication rates for both high tibial osteotomy and unicondylar knee replacement.
  • Subjective patient ratings favored osteotomy over unicondylar knee replacement and total knee arthroplasty.

Conclusions:

  • Constitutional deformity of the femur or tibia is the primary indication for osteotomy, which has a good prognosis regardless of age, BMI, or osteoarthritis grade.
  • Activity level and ligament stability are secondary factors favoring osteotomy.
  • Medial osteoarthritis without constitutional deformity is best treated with unicondylar knee replacement.