Locking knee caused by subluxation of the posterior horn of the lateral meniscus

The authors report a case of repetitive locking knee caused by a subluxation of the posterior horn of a normal lateral meniscus. The posterior horn was sutured to the posterior knee capsule and the athlete resumed complete sports activity 4months after the surger

Prothèses totales d'épaules inversées : récupérer la fonction en cas d'incompétence de la coiffe des rotateurs

Les principales caractéristiques biomécaniques de la prothèse inversée (cupule sur le versant huméral et sphère sur le versant scapulaire), cet implant semi-contraint, consistent en une médialisation ainsi qu'un abaissement du centre de rotation. Par ce biais, le bras de levier du deltoïde est augmenté. Les fibres musculaires du deltoïde antérieur et postérieur sont ainsi également recrutées pour devenir principalement abducteur. La congruence relative des composants (semi-contrainte) confère également à la prothèse inversée une certaine stabilité primaire, importante pour pallier la déficience de la coiffe des rotateurs (sus-épineux)

Direct MR arthrography of the shoulder under axial traction: Feasibility study to evaluate the superior labrum-biceps tendon complex and articular cartilage

PURPOSE: To assess the value of adding axial traction to direct MR arthrography of the shoulder, in terms of subacromial and glenohumeral joint space widths, and coverage of the superior labrum-biceps tendon complex and articular cartilage by contrast material. MATERIALS AND METHODS: Twenty-one patients investigated by direct MR arthrography of the shoulder were prospectively included. Studies were performed with a 3 Tesla (T) unit and included a three-dimensional isotropic fat-suppressed T1-weighted gradient-recalled echo sequence, without and with axial traction (4 kg). Two radiologists independently measured the width of the subacromial, superior, and inferior glenohumeral joint spaces. They subsequently rated the amount of contrast material around the superior labrum-biceps tendon complex and between glenohumeral cartilage surfaces, using a three-point scale: 0 = no, 1 = partial, 2 = full. RESULTS: Under traction, the subacromial (Δ = 2.0 mm, P = 0.0003), superior (Δ = 0.7 mm, P = 0.0001) and inferior (Δ = 1.4 mm, P = 0.0006) glenohumeral joint space widths were all significantly increased, and both readers noted significantly more contrast material around the superior labrum-biceps tendon complex (P = 0.014), and between the superior (P = 0.001) and inferior (P = 0.025) glenohumeral cartilage surfaces. CONCLUSION: Direct MR arthrography of the shoulder under axial traction increases subacromial and glenohumeral joint space widths, and prompts better coverage of the superior labrum-biceps tendon complex and articular cartilage by contrast material. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, In

Outcome of single-tendon rotator cuff repair in patients aged older than 65 years

BACKGROUND: Rotator cuff repairs in patients aged older than 65 years are reported to have a high failure rate. Furthermore, asymptomatic cuff tearing is frequent in this age group, so the value of tendon repair has been questioned. Our aim was to review the results of cuff repair in these patients and to identify factors predicting outcome. METHODS: In this study, 58 patients aged older than 65 years with reparable supraspinatus tears underwent primary open (22 patients) or arthroscopic (36 patients) repair. The leading symptom was pain despite nonoperative treatment for at least 6 months. Tendon healing was assessed on ultrasonography. RESULTS: Forty-four shoulders could be reviewed at a mean follow-up of 57 months (range, 24-112 months). Tendon healing was complete in 31 shoulders (70%). The mean Constant score (CS) improved from 49 points (range, 5-74 points) preoperatively to 78 points (range, 23-100 points) at follow-up (P < .05). The respective values for the relative CS were 64% (range, 7%-97%) and 95% (range, 33%-100%) (P < .05). The mean CS was better for healed repairs (82 points [range, 57-100 points]) than for nonhealed repairs (61 points [range, 23-88 points]) (P < .05). In 41 of 44 cases (93%), patients were satisfied or very satisfied with the operation. Though not statistically significant, dominance, cortisone injection, smoking, and tendon retraction appeared to favor nonhealing. CONCLUSIONS: Isolated supraspinatus tendon repairs in patients aged older than 65 years have a high healing potential and yield good clinical results with even better outcome if the repairs heal. Repair of symptomatic single-tendon rotator cuff tears in patients aged older than 65 years who do not respond to conservative treatment appears justified