LIVRE JDG 2010

TOTAL KNEE ARTHROPLASTY AFTER PRIOR KNEE ARTHROSCOPY

263

Group A

Group B

Group C *P value

(1119 patients )

(85 patients)

(146 patients)

Age (years)

72 (20 - 95)

71 (41-90)

69 (34-90)

<0.01

Sex

Female

854 (76%)

49 (58%)

91 (62%)

<0.001

Male

265 (24%)

36 (42%)

55 (38%)

<0.001

Side

Right

601 (54%)

47 (55%)

86 (59%)

Left

518 (46%)

38 (45%)

60 (41%)

BMI

29 (14.45-51.27)

29 (17.36-41.9) 27 (19.9-46.1)

=0.01

* NS non-significant statistical analysis between both study groups.

Table 1 : Characteristics of the study groups of patients (groups A, B and C)

At 120 months follow-up, the Kaplan-Meier

survival curves showed a survival rate of

98.1%, 90.9 and 94.8% of primary TKA sur-

vival rate for

group A, B and C

, respectively.

Post-operatively evaluation presented no dif-

ference in terms of improved IKS function

score, knee alignment, second surgical inter-

vention and revision TKA procedure.

However, group C showed lower IKS knee

score improvement (p=0.01), 11% of cases

were classified as moderate pain level

(p=0.01) and post-operative complication rate

was higher (22% of these cases) when compa-

red to other groups (p<0.001).

CONCLUSION

Our data confirms that prior knee surgery (bone

and soft tissue procedure) could be considered

a clinical condition that is predisposed to

higher postoperative complication and failures

rates in primary TKA (p<0.005 and p<0.001,

respectively) compared to the no prior surgery

group. Analyzing the three study groups, group

C showed A higher rate of postoperative com-

plications (p<0.001) and lower IKS knee

scores (p=0.01). However, statistical analysis

did not reveal a direct correlation between type

of prior knee surgery and TKA failures.

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