[Comparison of patellar dislocation recurrence in patients ages 9 to 16 years treated surgically with the green technique versus an arthroscopic approach]. / Comparación de la recurrencia de la luxación de patela en pacientes de 9 a 16 años operados con técnica tipo Green contra vía artroscópica.

OBJECTIVE: To report the patellar dislocation recurrence in patients ages 9 to 16 years treated surgically with the Green technique or an arthroscopic approach. MATERIAL AND METHODS: A prospective, longitudinal study was conducted with patients ages 9 to 16 years who presented at the pediatric orthopedics and arthroscopy service at IMSS "Lomas Verdes" UMAE Orthopedics and Traumatology Hospital with a diagnosis of patellar dislocation from January 1st 2003 to December 31st 2006. The patellar dislocation recurrences were recorded. RESULTS: Twenty patients and 24 knees were included; 13 females and 7 males; mean age was 14.3 years +/- 1.75. The dislocations prior to surgical treatment occurred at a mean of 5.5 +/- 2.57 dislocation events, with a range of 2 to 10 events. As regards the side involved, 40% had involvement of the left side, 40% of the right side, with 8 patients each, and 20% were bilateral dislocations. No significant differences were found in the clinical course of the patients treated with the Green technique compared with the arthroscopic surgery group (p = 0.371). CONCLUSIONS: The number of dislocation recurrences after the surgical procedure was not related with the age, gender, number of prior dislocations or surgical technique. No significant difference was found between both groups.

[Pre- and postoperative functional status of patients subjected to anterior cruciate ligament reconstruction associated with knee dislocation]. / Estado funcional pre y postoperado de pacientes con reconstrucción de ligamento cruzado anterior asociado a luxación de rodilla.

INTRODUCTION: The injury of the cruciate ligaments secondary to knee dislocation is caused by high energy trauma; its incidence rate is less than 0.02%; there are multiple treatments, with surgery being the most common one. OBJECTIVE: To determine the functional characteristics of patients who underwent cruciate ligament plasty and sustained knee dislocation. MATERIAL AND METHODS: An observational, prospective, cross-sectional study was conducted including all adult patients with a diagnosis of cruciate ligament injury resulting from knee dislocation who were surgically treated from January 2006 to December 2007. Two knee functional assessment scales were used. RESULTS: A total of 16 patients were included, 12 males and 4 females; mean age was 32.1 years. The Knee Society Clinical Rating Scale had a positive correlation with the Lysholm Knee Scoring Scale (r = 0.836) with p = 0.001. DISCUSSION: The functional results of patients treated surgically are diverse. This study was not conducted as a controlled clinical trial due to the absence of randomization, which was not possible due to the infrequency of the condition. CONCLUSIONS: It will be necessary to confirm the results after a longer follow-up and in a comparative, double-blind study of patients undergoing surgery.