BACKGROUND: @entity1 with @entity2096 are at risk for chronic recurrent patellofemoral dislocations, with extreme cases often requiring a surgical procedure. Anteromedialization of the tibial tubercle with intraoperative femoral nerve stimulation and concurrent medial patella-femoral ligament (MPFL) reconstruction is a previously reported method of maximizing patello-femoral congruency. We hypothesize the Fulkerson osteotomy with intraoperative femoral nerve stimulation and concurrent MPFL reconstruction in @entity1 with severe @entity6125 provides equivalent postoperative clinical outcomes to the same procedure in @entity1 with low level @entity6125 . METHODS: 48 knees underwent Fulkerson osteotomy with intraoperative femoral nerve stimulation and concurrent MPFL reconstruction for recurrent @entity8043 . MRI, surgeon intraoperative assessment, and X-ray were used to assess degrees of @entity6125 ; @entity1320 error were measured. The knees positive for @entity12341 on MRI, intraoperative assessment, and X-ray were considered as a comparison cohort to the rest of the study population. We considered postoperative dislocation events and patellar tracking kinematics as outcome measures. Independent student t tests and Fisher exact tests were used to evaluate differences between groups. Significance was set at P<0.05. RESULTS: 11 knees were positive for @entity12341 ( @entity12341 ) by combined MRI, surgeon intraoperative assessment, and X-ray with the remaining 37 knees categorized as @entity258 ( @entity258 ). No @entity1 in either group exhibited apprehension or required re-operation. Mean sulcus angle in the @entity12341 group was 175.8 +-2.45 degrees (95% CI 171.0-180.6); the @entity258 group mean sulcus angle was 154.3 +- 0.98 degrees (95% CI 152.4-156.2) (P<.001). Postoperatively there was no significant difference in dislocation events between the @entity12341 group (0/11) and the @entity258 group (2/37) (P>0.999). Patellar maltracking decreased in both groups and there were no significant differences in estimates of patellofemoral congruency between the @entity12341 (2/11) and @entity258 (8/37) (P>0.999) groups. CONCLUSION: The Fulkerson osteotomy with femoral nerve stimulation aimed at maximizing patellofemoral congruency may be an equally effective procedure for @entity1 with either severe or mild @entity6125 . LEVEL OF EVIDENCE: Level III, Retrospective comparative study.

Effectiveness of Fulkerson Osteotomy with Femoral Nerve Stimulation for @entity1 with Severe XXXX .

@entity1 :: ('9606', 'Species') :: ['Patients', 'patients'] @entity258 :: ('MESH:D009800', 'Disease') :: ['low dysplasia', 'LD'] @entity1320 :: ('MESH:D059413', 'Disease') :: ['inter-observer and intra-observer'] @entity6125 :: ('MESH:D020432', 'Disease') :: ['trochlear dysplasia'] @entity2096 :: ('MESH:D020428', 'Disease') :: ['femoral trochlear dysplasia'] @entity8043 :: ('MESH:D031222', 'Disease') :: ['lateral patellar dislocations'] @entity12341 :: ('MESH:C563736', 'Disease') :: ['SD', 'severe dysplasia']
@entity2096 :: (MESH:D020428,Disease) :: ['Femoral Trochlear Dysplasia']
