LIVRE JDG 2010

INTRODUCTION

The postoperative results of total knee arthro-

plasty (TKA) are related to reestablishment of

axis alignment, ligament balance and conse-

quently, correct implant positioning. In this

context, adequate exposure helps the surgeon

optimize required corrections regarding the

ligaments and bone sections.

Sometimes, major deformities such as valgus

and varus knees, limited range of motion (par-

ticularly flexion, patella infera) present techni-

cal difficulties in relation to surgical exposure

when a conventional approach is used.

Various techniques are described in the litera-

ture on extending the surgical approach so that

greater exposure is obtained and the knee

extensor mechanism is protected when patella

eversion is difficult. Usually, these surgical

procedures are performed proximally or distal-

ly to the patella so that better exposure and

improved knee flexion are obtained.

MATERIALS AND

METHODS

In a continuous and cohort series of 1474

Primary TKA (T

ORNIER

®, Saint Ismier,

France), we analyzed 126 cases where the

tibial tubercle osteotomy approach was perfor-

med and 1348 cases without tibial tubercle

osteotomy (Table 1).

257

RESULTS OF TOTAL KNEE

ARTHROPLASTY PERFORMED

WITH TIBIAL TUBERCLE OSTEOTOMY

S. ROCHA-PIEDADE, A. PINAROLI, E. SERVIEN, PH. NEYRET

Group A

Group B

*p < 0.05

(n = 1348 cases without TTA)

(n = 126 cases with TTA)

Age

71.20 (20-93 years)

72.02 (45-95 years)

Sex

Female

72%

(969 cases)

80%

(101 cases)

=0.048

Male

28% (379 cases)

20% (25 cases)

Side

Right

54%

(723 cases)

63%

(79 cases)

Left

46% (625 cases)

37% (47 cases)

BMI

28.65

(14.45-51.27)

28.12

(19.53-50.22)

* NS non-significant statistical analysis between both study groups

Table 1: Characteristics of patients according to age, sex, side, weight,

height and BMI in Group A (1348 cases) and Group B (126 cases)