Abstract
BackgroundOnly a few studies have described the effect of full arthroscopic surgery in treatment of excessive lateral pressure syndrome (ELPS). Therefore, the purpose of this study was to assess the clinical efficacy and experience of total arthroscopic lateral retinacular (LR) release and lateral patelloplasty for the treatment of ELPS.MethodsA total of 73 patients (88 knees) with ELPS underwent arthroscopic LR release and lateral patelloplasty. The visual analogue scale (VAS), Kujala score, Lysholm scores, patella medial pushing distance, patellar tilt angle (PTA), and lateral patellofemoral angle (LPFA) were measured and evaluated before and after surgery.ResultsFollow-up ranged from 12 to 36 months with an average of 24 ± 5.8 months. The VAS was significantly lower at the last follow-up than before surgery (P < 0.01). The patella medial pushing distance, Kujala score, Lysholm score, PTA, and LPFA were significantly higher at the last follow-up than before surgery (P < 0.01, respectively). Years and lateral patella Outerbridge classification at the last follow-up have negative correlation with Kujala score, Lysholm score, Patella medial pushing distance, PTA, and LPFA (P < 0.01, respectively) and have positive correlation with VAS (P < 0.01, respectively). Related complications were not reported.ConclusionsFull arthroscopic LR release combined with lateral patelloplasty in the treatment of ELPS is an effective minimally invasive method, which can effectively correct anomalies of force line and skeleton of patella, relieve pain, and restore knee joint motor function with less complications.
Highlights
A few studies have described the effect of full arthroscopic surgery in treatment of excessive lateral pressure syndrome (ELPS)
Excessive lateral pressure syndrome (ELPS), known as lateral patellar compression syndrome, is featured by long-term lateral tilt of the patella without subluxation or dislocation and adaptive shortening of lateral retinaculum (LR), which results in long-term stress imbalance of the medial and lateral patellofemoral articular surface, increased lateral patellofemoral joint pressure, and causes a series of pain syndromes [1]
The lateral tilt of the patella is secondary to the contracture of the lateral retinacular (LR), whose pathogenesis is related to the increased lateral patellofemoral joint stress [2]
Summary
A few studies have described the effect of full arthroscopic surgery in treatment of excessive lateral pressure syndrome (ELPS). The purpose of this study was to assess the clinical efficacy and experience of total arthroscopic lateral retinacular (LR) release and lateral patelloplasty for the treatment of ELPS. Excessive lateral pressure syndrome (ELPS), known as lateral patellar compression syndrome, is featured by long-term lateral tilt of the patella without subluxation or dislocation and adaptive shortening of lateral retinaculum (LR), which results in long-term stress imbalance of the medial and lateral patellofemoral articular surface, increased lateral patellofemoral joint pressure, and causes a series of pain syndromes [1]. The lateral tilt of the patella is secondary to the contracture of the LR, whose pathogenesis is related to the increased lateral patellofemoral joint stress [2]. Arthroscopic LR release has become the main method in treatment of ELPS [5]
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