S. Simmons et al., PROPRIOCEPTION FOLLOWING TOTAL KNEE ARTHROPLASTY WITH AND WITHOUT THEPOSTERIOR CRUCIATE LIGAMENT, The Journal of arthroplasty, 11(7), 1996, pp. 763-768
Proprioception was measured in two groups of patients following succes
sful total knee arthroplasty (TKA). In one group, the posterior crucia
te ligament was retained and an unconstrained cruciate-retaining total
knee component was used; in the other group, the posterior cruciate l
igament was excised and a cruciate-substituting design was implanted.
Threshold to detection of passive motion was quantified as a measure o
f proprioception. The degree of preoperative arthritis was objectively
classified according to Resnick and Niwoyama. There was no difference
in threshold to detection of passive motion in cruciate-retaining ver
sus cruciate-substituting TKA. In patients with a moderate grade of ar
thritis before surgery, the postoperative scores were virtually identi
cal, When the grade of preoperative arthritis was severe, patients wit
h cruciate-substituting TKAs performed significantly better than those
with cruciate-retaining TKAs.