Ipsilateral Patellofemoral morphological abnormalities are M
Now open: Certificate Course in Management of Covid-19 by Govt. Of Gujarat and PlexusMDKnow more...Now open: Certificate Course in Management of Covid-19 by Govt. Of Gujarat and PlexusMDKnow more...
This study aimed to determine the differences in anatomic parameters between ipsilateral dislocated knees and contralateral non-dislocated knees in patients with unilateral patellar dislocation and to identify any variations in ipsilateral knees contributing to contralateral anatomic abnormalities.

A total of 82 patients with unilateral patellar dislocation were retrospectively evaluated. Bilateral anatomic factors, including the tibial tubercle to trochlear groove (TT-TG) distance, lower limb rotational deformities, trochlear dysplasia, patella tilt, and patellar height, were assessed by CT.

Results:
--The study included 46 patients (32 females and 14 males, mean age ± SD 20.5 ± 6.8).

--The interobserver reliability of each parameter showed excellent agreement. The ipsilateral TT-TG distance, patella tilt, and patellar height were greater in the ipsilateral knees than in the contralateral knees.

--The lateral trochlea inclination (LTI) in the contralateral knees was larger than that in the ipsilateral knees.

--There was a significant difference in the distribution of trochlear dysplasia of Dejour between the ipsilateral knees (dislocated side) and the contralateral knees.

--However, bilateral femoral and/or tibial torsion, and bilateral knee joint rotation did not differ significantly.

--Binary logistic regression showed that only ipsilateral LTI revealed significant ORs of 8.83 and 7.64 with regard to contralateral abnormal tibial torsion and LTI, respectively.

In patients with unilateral patellar dislocation, the ipsilateral TT-TG gap, patella tilt, and patellar height values were all greater in the ipsilateral knees than in the contralateral knees, and trochlear dysplasia was more serious in the ipsilateral joints. In patients with irregular ipsilateral LTI, the chances of contralateral pathological tibial torsion and LTI were 8.8 and 7.6 times higher, respectively.

Source: https://link.springer.com/article/10.1007/s00167-021-06539-2
Like
Comment
Share