Rheumatology Medical News about TKA, computer-assisted surgery, extra-articular deformity, osteotomy

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Computer-assisted total knee arthroplasty for arthritis with extra-articular deformity
Journal of Arthroplasty, 07/16/09

Mullaji A et al. – Study demonstrates that the computer-assisted total knee arthroplasty (TKA) is a useful alternative to conventional TKA for knee arthritis with extra-articular deformity where accurate restoration of limb alignment may be challenging because of the presence of a deformed tibia or femur or in the presence of hardware.

Methods

40 extra-articular deformities (22 femoral and 18 tibial) in 34 pts; mean age: 63.1 yrs, were studied
Mean coronal extra-articular deformity was 9.3°
Mean preoperative limb alignment was 166.7°
3 limbs underwent simultaneous corrective osteotomy
Rest were treated with intra-articular correction during computer-assisted TKA

Results

Mean postoperative limb alignment was 179.1°
At a mean f/u of 26.4 mo, the Knee Society knee score improved from a mean preoperative score of 49.7 to 90.4 points postoperatively
Function score improved from 47.3 to 84.9 points

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