The Recovery Time of Quadriceps Strength After Total Knee Arthroplasty (TKA): The Effect of Quadriceps Incision Length

Mahidol University

Status: Completed

Conditions: Osteoarthritis of Knee

Treatments: Procedure: Quadriceps incision > 4 cm; Procedure: Quadriceps incision 2-4 cm; Procedure: Quadriceps incision < 2 cm

Study type: Interventional

Funder types: Other

Identifiers

NCT01450904

Si051/2554(EC2)

Details and patient eligibility

About

Minimally invasive total knee arthroplasty (MIS-TKA) became the popular technique. It had the less postoperative pain and shorter recovery time compared to the conventional technique. With using MIS technique, less cut of quadriceps tendon was the key. It related to keep more quadriceps strength and improve functional performance after TKA. However, there was no previous studies about the effect of quadriceps incision length in the recovery time of the quadriceps strength. The investigators hypothesized that longer quadriceps incision affected the longer recovery time of quadriceps strength in MIS-TKA.

Enrollment: 60 patients

Sex: All

Ages: 40 to 85 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• The patients who diagnosed primary osteoarthritis of knee with

  1. varus or valgus deformity < 20 degrees
  2. preoperative range of motion > 90 degrees
  3. extension lag < 10 degrees
  4. Flexion contracture < 30 degrees

Exclusion criteria

• Bilateral simultaneous total knee arthroplasty
• Previous knee surgery
• Inadequate exposure during the surgery

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Triple Blind

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60 participants in 3 patient groups

Group A

Experimental group

Description:

The length of Quadriceps incision was less than 2 cm.

Treatment:

Procedure: Quadriceps incision < 2 cm

Group B

Experimental group

Description:

The length of Quadriceps incision was 2 to 4 cm.

Treatment:

Procedure: Quadriceps incision 2-4 cm

Group C

Experimental group

Description:

The length of Quadriceps incision was more than 4 cm.

Treatment:

Procedure: Quadriceps incision > 4 cm