Técnica modificada de Boytchev para luxación recidivante de hombro

Introducción: La luxación anterior del hombro es una lesión ortopédica con alto riesgo de desarrollar inestabilidad glenohumeral anterior. Su tratamiento es quirúrgico y existen varias técnicas que permiten la reconstrucción. Objetivo: Mostrar los resultados de la técnica modificada de Boytchev para el tratamiento de la inestabilidad anterior de hombro. Métodos: Estudio retrospectivo, tipo serie de casos, con pacientes operados con técnica modificada de Boytchev. Con ella se redirecciona el tendón conjunto del bíceps y se pasa por detrás del músculo subescapular para mejorar el soporte en la cara anterior de la articulación glenohumeral. Resultados: Se operaron 22 pacientes que tuvieron un seguimiento mínimo de 43 meses. Todos pudieron retornar a sus actividades laborales y deportivas. Ninguno presentó recidiva y la movilidad fue completa. En un caso el material de osteosíntesis se aflojó, pero se solucionó sin complicaciones. Conclusiones: Se trata de una técnica quirúrgica que permite restituir la tensión de los tejidos blandos anteriores del hombro y corregir de forma satisfactoria su inestabilidad; no expone la cápsula articular ni altera la longitud del tendón conjunto, lo que deriva en menor fibrosis. Es reproducible y segura, con baja tasa de complicaciones y permite el retorno a las actividades físicas sin comprometer la movilidad del hombro.

Introduction: Anterior shoulder dislocation is an orthopedic injury with high risk of developing anterior glenohumeral instability. Its treatment is surgical and there are several techniques allowing reconstruction. Objective: To display the results of the modified Boytchev technique for the treatment of anterior shoulder instability. Methods: This is a retrospective study, case series type, with patients operated with modified Boytchev's technique. It redirects the conjoined biceps tendon and it is passed behind the subscapularis muscle to improve support on the anterior aspect of the glenohumeral joint. Results: Twenty two patients who had a minimum follow-up of 43 months were operated on. All were able to return to their work and sports activities. None had recurrence, mobility was complete. In one case, the osteosynthesis material loosened, but it was fixed without complications. Conclusions: This is a surgical technique that allows restoring the tension of the anterior soft tissues of the shoulder and satisfactorily correcting its instability; it does not expose the joint capsule or alter the length of the joint tendon, which results in less fibrosis. It is repeatable and safe, with a low rate of complications and allows returning to physical activities without compromising shoulder mobility.

Superior Labrum Anterior to Posterior (SLAP) Lesion with Glenohumeral Instability / 대한정형외과학회잡지

Role of the superior labrum-biceps complex for the glenohumeral stability is still unclear. Nevertheless, isolated superior labrum anterior to posterior (SLAP) lesion can cause glenohumeral instability in young patient (especially in throwing athletes) and SLAP lesion are a well-known pathology entity in acute or chronic glenohumeral dislocation. Ten types of SLAP lesion have been classified by arthroscopic examination, among them type II and type IV through X SLAP can disturb glenohumeral stability by disrupting the anchoring of biceps. Arthroscopic repair of labrum is the most preferred method for SLAP lesion with glenohumeral instability in younger patient. Surgical treatment, if necessary, should address all aspects of the labral anatomy so that all the roles of the labrum in shoulder stability must be restored. In terms of restoration for glenohumeral instability, the good clinical results have been reported after arthroscopic repair of a SLAP with Bankart lesion. But, it is still a work in progress for long term clinical follow-up and understanding about relationship between SLAP lesion and glenohumeral instability.

Inestabilidad glenohumeral: lo que el radiologo debe saber / Glenohumeral instability: what the radiologist should know

Glenohumeral instability is a common cause of pain and functional limitation of the shoulder, which involves symptomatic subluxation or dislocation of the humeral head with respect to the glenoid fossa. Glenohumeral instability may be classified according to several parameters: degree, direction, timing, etiology and biomechanics of the dislocation, among others. Imaging methods play an important role in the evaluation of glenohumeral instability, being all of them useful, complementary, and not necessarily mutually exclusive modalities. The following article presents a review of the main types of glenohumeral instability and related imaging findings.

La inestabilidad glenohumeral es una causa frecuente de dolor y limitación funcional del hombro, que implica subluxación o luxación sintomática de la cabeza humeral con respecto de la fosa glenoidea. Puede clasificarse considerando varios aspectos: grado, dirección, cronología, etiología y biomecánica de la luxación, entre otros. La imaginología juega un rol importante en la evaluación de la inestabilidad glenohumeral, siendo todos los métodos de imágenes útiles, complementarios entre sí y no necesariamente excluyentes. En el siguiente artículo presentamos una revisión de los principales tipos de inestabilidad glenohumeral y los hallazgos imaginológicos asociados.

Glenohumeral Instability Manifestation on CT Arthrography / 实用放射学杂志

Objective To evaluate the manifestations of glenohumeral instability on CT arthrography.Methods 16 cases of glenohumeral instability were examined both by CT arthrography and arthroscopy and to analyze the manifestations on CT arthrography.Results Intraarticular injury included labral tear, capsular stripping or laxity, anterior glenoid fracture and lateral posterior humeral head impacted fracture.Conclusion Shoulder arthrography has good contrast, and because the imaging no overlaps, can clearly show the intraarticular injures. It is a good examine method of glenohumeral instability.

Magnetic Resonance Arthrography in the evaluation of Anterior Glenohumeral Instability / 대한정형외과학회잡지

Anterior glenohumeral instability is mainly due to the Bankart lesion and capsular stretch. The differentiation between the Bankart lesion and capsular laxity may not be readily apparent on clinical examination. So, increasing attention has been directed toward preoperative evaluation of the labral lesion and capsular laxity. MRI and MR Arthrogram of 55 shoulders, 40 stable shoulders and 15 unstable shoulders that were confirmed by arthroscopic surgery, were reviewed to evaluate the labral and capsular shapes, especially the lesions of labroligamentous complex. To evaluate and compare the capsular laxity, we measured the anterior capsular insertion type, capsular ballooning, capsular insertion angle and anterior band of inferior glenohumeral ligament. And the following results were obtained; 1) The shape of anterior labrum was varied in the superior, middle and inferior potions in 40 stable shoulders. The anterior labral lesions were shown as torn(eight cases), displaced(six cases) and no detectable labrum(one case), in 15 unstable shoulders. Also, there were a significant di fference in the evaluation of the anteior labrum shape between MRI and MR arthrography. 2) There were not a significant difference in the type III capsular insertion type, capsular ballooning and capsular insertion angle between the stable and unstable shoulders. However, it was found that the shape of the anterior band of the inferior glenohumeral ligament had definite difference between the two groups. And so, more experience and attention should be given for the accurate preoperative evaluation of the anterior labroligamentous complex in shoulder instability.