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The Elmslie-Trillat procedure: evaluation in patellar dislocation and subluxation
The American Journal of Sports Medicine
|March 1, 1984
Summary
The Elmslie-Trillat procedure effectively treats patellar malalignment, with results improving when the quadriceps angle (Q-angle) is corrected to 10 degrees or less. Intraoperative Q-angle measurement is key to avoiding poor outcomes.
Area of Science:
- Orthopedic Surgery
- Biomechanics
Background:
- Patellofemoral malalignment can cause pain and functional limitations.
- The Elmslie-Trillat procedure is a surgical option for correcting this condition.
Purpose of the Study:
- To evaluate the efficacy of the Elmslie-Trillat procedure for patellofemoral malalignment.
- To identify factors correlating with successful surgical outcomes.
Main Methods:
- Retrospective evaluation of 27 knees in 22 patients undergoing the Elmslie-Trillat procedure.
- Assessment of preoperative and postoperative pain, activity levels, and quadriceps angle (Q-angle).
Main Results:
- 81% of patients achieved good or excellent results, with 91% success in cases of patella alta.
- A postoperative Q-angle of 10 degrees or less correlated with good/excellent outcomes.
- Preoperative Q-angle did not predict results, but Q-angles ≥15 degrees postoperatively were linked to fair/poor results.
Conclusions:
- Inadequate tibial tuberosity displacement can lead to unsatisfactory results.
- Intraoperative Q-angle measurement is recommended to optimize outcomes.
- Correction of the Q-angle to ≤10 degrees is associated with successful Elmslie-Trillat procedures for patellar subluxation/dislocation.