TKA

Question 1

What is the most common indication for a TKA?

Answer 1

Destruction of Articular Cartilage secondary to Osteoarthritis

Question 2

What activities/factors can predispose an individual to osteoarthritis?

Answer 2

• Participation in High-Impact Sports
• Trauma to the Knee

Question 3

What knee deformity may be a contraindication to TKA?

Answer 3

Significant Genu Recurvatum

Question 4

Weight bearing precautions for a cemented knee?

Answer 4

PWB or WBAT

Question 5

Weight bearing precautions for a non-cemented knee?

Answer 5

TTWB for up to six weeks to allow for the bone to fuse and onto the prosthesis

Question 6

What ROM is often indicated for discharge home post surgery?

Answer 6

90 degrees of flexion
0 degrees of extension

Question 7

What motions should initially be avoided?

Answer 7

Done to prevent excessive stress:

• Squatting
• Quick Pivoting
• Avoid low seating

Question 8

Recommendations for Pillow use in Bed?

Answer 8

Avoid putting pillows under the knee while in bed

Question 9

What is Replaced: Unicompartmental

Answer 9

Only the medial or lateral joint surface is replaced

Question 10

What is Replaced: Bicompartmental

Answer 10

Entire surface of the tibia and femur are replaced

Question 11

What is Replaced: Tricompartmental

Answer 11

Replacement of the tibia, femur and patella

Question 12

Unconstrained designs usually follows what type of compartmental surgery?

• Caveat to this type of of constraint?

Answer 12

Reliant on tissue structures for stability

• Unicompartmental

Question 13

Most common restrain designs for a TKA?

Answer 13

Semi-constrained; offers some degree of stability without compromising mobility.

Question 14

Average lifespan of a TKA?

Answer 14

15-20 years (same as THA)