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Table 1 Characteristics of studies included in this meta-analysis

From: Operative versus conservative treatment for patellar dislocation: a meta-analysis of 7 randomized controlled trials

Study

National

Study design

Operative interventions

Non-operative interventions

Duration

Nikku et al. 1997, 2005 [23, 24];

Japan

RCT

MR or MPFL augmentation, or LR.

3 weeks immobilization in cast or orthosis then thigh muscle exercises

7.2y

Palmu et al. 2008 [25];

Finland

RCT

MPFL repair and in 32 cases, LR.

3 weeks immobilization in cast or orthosis then thigh muscle exercises.

14y

Christiansen et al. 2008 [26];

Denmark

RCT

MPFL repair

0–2 weeks orthosis immobilization 0–20° motion. Quadriceps exercises and general physiotherapy

2y

Sillanpää et al. 2008 [8];

Finland

RCT

MR and MPFL repair; R-G procedure; arthroscopic repair of osteochondral fracture

3 weeks orthosis immobilization 0–30° motion. Week 3–6 weeks, 0–90° full motion at 6 weeks. Quadriceps exercises commence immediately

7y

Camanho et al. 2008 [2];

Brazil

RCT

MPFL repair

3 weeks immobilization then physiotherapy with VMO exercises

Op-3.4; N-Op 3.0

Bitar et al. 2012 [9];

Brazil

RCT

MPFL reconstruction using patellar tendon

3 weeks immobilization then physiotherapy with quadriceps exercises

2y

Petri et al. 2012 [7];

Germany

RCT

repair the tear, or lateral release

3 weeks orthosis immobilization 0–30° motion with partial weight-bearing. Week 3–6 weeks, 0–90° motion with progression to pain-adapted full weight-bearing.

2y

  1. MR: Medial retinaculum; MPFL: Medial patellofemoral ligament; LR: Lateral release; Op: Operative; R-G: Roux–Goldthwaite procedure; RCT: Randomized controlled trial; N-op: Non-operative; VMO: Vastus medialis oblique.