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Results for “Rotator Cuff Injuries”

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PubMedDate not supplied

Tissue-engineered rotator cuff tendon using porcine small intestine submucosa. Histologic and mechanical evaluation in dogs.

To determine its efficacy in stimulating the regeneration of a rotator cuff tendon, an implant of 10-ply porcine small intestinal submucosa was used to replace a completely resected infraspinatus tendon in 21 adult mongrel dogs. The contralateral infraspinatus tendon was elevated and then reattached to the greater tubercle with sutures to mimic conventional repair (sham operation). Mechanical evaluations were performed at 0, 3, and 6 months (five specimens at each time period). Histologic comparisons were made at 3 and 6 months (three specimens). At both times, the gross appearance, histologic continuity, and failure mode of the constructs mimicked those of sham-operated and native infraspinatus tendons, thus suggesting host tissue ingrowth and implant remodeling with solid integration of the regenerated tissue to muscular and bony interfaces. Tissue ingrowth occurred without histologic evidence of foreign body or immune-mediated reactions or adhesions to peripheral tissues. Sham operations simulated tendon mobilization and reimplantation procedures routinely performed to treat chronic rotator cuff tendon injuries. Although the ultimate strength of small intestinal submucosa-regenerated tendons was significantly less than that of native infraspinatus tendons (P < 0.001), it was similar to that of reimplanted tendons at 3 (P > 0.05) and 6 months (P > 0.05).

Animals↗
PubMed1993

Injuries to the glenoid labrum, including slap lesions.

The glenoid labrum of the shoulder has extensive anatomic variation but appears to be important for contributing to shoulder stability and for increasing the depth of contact between the glenoid labrum and the humeral head. Tears of the labrum are commonly seen in association with other pathologic entities, such as instability and rotator cuff tears, and treatment of the labral pathology may be incidental to treatment of the other more significant pathology. However, conditions isolated to the labrum do occur and can be a significant source of shoulder problems. Effective treatment of these lesions may result in significant improvement in the patient's symptoms. Labral lesions are difficult to diagnose, and special diagnostic studies and, frequently, arthroscopy are required. The recently described SLAP lesion is an uncommon but significant cause of shoulder disability that generally requires arthroscopic diagnosis. The arthroscopic treatment of this lesion depends on the type of SLAP lesion present. Recent techniques have permitted arthroscopic stabilization of the biceps labral detachment and type II SLAP lesions.

Arthroscopy↗
PubMed2002

Shoulder instability: accuracy of MR imaging performed after surgery in depicting recurrent injury--initial findings.

PURPOSE: To analyze a series of postoperative magnetic resonance (MR) images obtained in patients with recurrent signs or symptoms of instability in whom subsequent surgical correlation was performed to determine the accuracy in diagnosing recurrent injury. MATERIALS AND METHODS: The authors identified 24 patients who underwent MR imaging after shoulder instability surgery and had recurrent instability requiring repeat surgery. Twelve nonenhanced MR images and six indirect and six direct MR arthrograms were retrospectively reviewed with consensus to determine the presence or absence of recurrent labral or rotator cuff tear. Operative reports were reviewed to confirm the presence or absence of labral or rotator cuff tear. The mean interval between initial surgery and MR imaging was 10 months. The mean interval until repeat surgery was 2 months. RESULTS: Overall, the accuracy of postoperative MR imaging was 79% in depicting recurrent labral tear and 88% in depicting recurrent rotator cuff tear. Indirect MR arthrography had 100% accuracy for recurrent labral tear detection, whereas direct MR arthrography and nonenhanced MR imaging had accuracies of 67% and 75%, respectively. Direct MR arthrography was more sensitive, 100% versus 71%, but less specific, 60% versus 80%, than nonenhanced MR imaging in depicting recurrent labral tears. Direct MR arthrography had 100% accuracy in depicting rotator cuff tear, whereas both indirect MR arthrography and nonenhanced MR imaging had 83% accuracy. CONCLUSION: MR imaging, indirect MR arthrography in particular, appears to be an accurate means of evaluating the shoulder following instability surgery.

Adult↗
PubMedDate not supplied

Isolated fractures of the greater tuberosity of the proximal humerus.

This review addresses isolated greater tuberosity fractures of the proximal humerus. The important aspects of the epidemiology, anatomy, fracture classification, associated injuries, and treatment are discussed. Although isolated greater tuberosity fractures are well recognized, there are few studies that specifically evaluate the outcome of these injuries. Our experience and review of the recent literature suggest that more precise evaluation of diagnostic criteria, treatment selection, and outcome is required.

Humans↗
PubMed2001

Biceps load test II: A clinical test for SLAP lesions of the shoulder.

PURPOSE: The purpose of this report is to describe the biceps load test II for evaluating the superior labral anterior and posterior (SLAP) lesions. TYPE OF STUDY: This is a double-blind study in consecutive data, which includes diagnostic accuracy of a test using sensitivity, specificity, and interexaminer reliability. METHODS: In the supine position, the arm is elevated to 120 degrees and externally rotated to its maximal point, with the elbow in the 90 degrees flexion and the forearm in the supinated position. The patient is asked to flex the elbow while resisting the elbow flexion by the examiner. The test is considered positive if the patient complains of pain during the resisted elbow flexion. The test is negative if pain is not elicited or if the pre-existing pain during the elevation and external rotation of the arm is unchanged or diminished by the resisted elbow flexion. A prospective study was performed in 127 patients to evaluate the diagnostic accuracy for the biceps load test II. Two independent examiners were assigned to perform the new diagnostic test. The results of the tests were confirmed during the arthroscopic examination. RESULTS: A positive test result in 38 subjects correlated with a SLAP lesion in 35 patients and an intact biceps-superior labrum in 3 patients. A negative test result in 89 patients correlated with an intact superior labrum complex in 85 patients, whereas 4 patients with a negative test result had a type II SLAP lesion. The biceps load test II had a sensitivity of 89.7%, a specificity of 96.9%, a positive-predictive value of 92.1%, a negative-predictive value of 95.5%, and a kappa coefficient of 0.815. The abduction and external rotation of the shoulder during the test changes the relative direction of the biceps fiber in a position of oblique angle to the posterosuperior labrum. The resisted contraction of the biceps increases the pain generated on the superior labrum that is already peeled off the glenoid margin in the abducted and externally rotated position. CONCLUSIONS: The biceps load test II is an effective diagnostic test for SLAP lesions.

Acromioclavicular Joint↗
PubMedDate not supplied

Arthroscopic transglenoid suture capsulolabral repairs: preliminary results.

The arthroscopic transglenoid suture technique was performed on 38 shoulders for anterior capsulolabral repair or reconstruction. The primary complaint was instability in 34 shoulders (89%) and pain in 4 shoulders (11%). In the instability subgroup, 3 (9%) experienced instability in their sleep, 17 (50%) with activities of daily living, and 14 (41%) with athletic activities. Arthroscopic examination revealed labral detachment in 35 shoulders (92%) with additional capsular abnormalities noted in 17 (45%). The remaining 3 shoulders (8%) demonstrated capsular laxity and thinning without labral detachment. Twenty-nine shoulders had complete relief of instability. There were no redislocations. Four shoulders (10%) had recurrence of instability. Twenty shoulders (53%) obtained full range of motion, 15 (39%) had minor (< 10 degrees) loss of external rotation, 2 (5%) experienced greater (> 10 degrees) loss of external rotation, and 1 improved over a restricted preoperative range of motion. Fifteen of the 20 competitive athletes and 11 of the 15 recreational athletes returned to the same level and same type of athletic activity. Five patients did not resume their preinjury athletics because of unrelated life-style changes; they reported no shoulder problems. Four patients significantly reduced their athletic participation because of postoperative instability or residual pain. In conclusion, relief of apprehension, reestablishment of shoulder stability and return to athletic activity, including contact and throwing activities, can be achieved safely and effectively in appropriately selected patients.

Activities of Daily Living↗
PubMed1991

Rotator cuff lesions. Acute and chronic.

The complex anatomy of the shoulder often impedes the orthopedic surgeon's evaluation and understanding of injuries to the shoulder joint, particularly the rotator cuff muscle-tendon complex. Arthroscopy, MRI, and digital data analysis are several techniques now at the surgeon's disposal. This article reviews the application of these techniques in the evaluation of rotator cuff injuries.

Arthroscopy↗
PubMed1996

Labral injuries: accuracy of detection with unenhanced MR imaging of the shoulder.

PURPOSE: To prospectively assess the accuracy of unenhanced magnetic resonance (MR) imaging in the detection and localization of labral injuries. MATERIALS AND METHODS: One hundred three patients with clinically suspected shoulder injuries were prospectively examined with unenhanced MR imaging. A combination of gradient-echo and high-resolution fast-spin-echo axial pulse sequences were used. Surgical correlation was obtained in all patients. RESULTS: At surgery, 37 torn anterior, 36 torn superior, and 19 torn posterior labral were identified. The sensitivity for detection of these tears with MR imaging was 100%, 86%, and 74%, respectively; the specificity was 95%, 100%, and 95%, respectively. Overall, unenhanced MR imaging was 95% accurate in the detection of labral injuries. CONCLUSION: With appropriate pulse sequences, unenhanced MR imaging of the shoulder is an accurate technique for the detection and localization of labral injuries.

Adult↗
PubMed2005

The effects of thermal capsular shrinkage on the outcomes of arthroscopic stabilization for primary anterior shoulder instability.

BACKGROUND: The effectiveness of arthroscopic thermal capsulorrhaphy in the prevention of recurrent instability in primary anterior stabilization is undetermined. PURPOSE: To determine if patients with recurrent anterior shoulder instability who have labral repair plus arthroscopic thermal capsulorrhaphy have better outcomes than those with labral repair alone. STUDY DESIGN: Cohort study; Level of evidence, 3. METHOD: There were 72 patients who underwent arthroscopic anterior shoulder stabilization with Suretac II tacks (n = 32) during 1996 to 1999 or with Suretac II tacks plus arthroscopic radiofrequency capsular shrinkage (n = 40) from 1999 to 2002. Standardized patient-determined and examiner-determined outcome measures were obtained preoperatively and at 3, 6, 12, and 24 months postoperatively. Statistical analyses included a Kaplan-Meier analysis of time to recurrent instability. RESULTS: Of the 72 patients, 66 had complete follow-up, including 28 patients treated with the Suretac stabilization and 38 patients with the Suretac plus radiofrequency shrinkage, for a mean follow-up of 58 and 30 months, respectively. All patients had a Bankart lesion. Both groups had similar results with respect to patient-determined and examiner-determined outcome measures. The only adverse outcome was postoperative recurrent instability in 6 of 28 cases in the Suretac group alone and 8 of 38 cases in the Suretac-plus -shrinkage group. Most recurrent instability occurred between 6 and 24 months. Kaplan-Meier analysis for time to recurrent instability showed no differences in the rate of instability recurrence between the 2 groups. CONCLUSION: Arthroscopic thermal capsulorrhaphy neither enhanced nor impaired the outcomes of arthroscopic labral repair with biodegradable tacks in patients with primary recurrent anterior shoulder instability.

Adult↗
PubMed1998

Primary traumatic anterior shoulder dislocation in patients 40 years of age and older.

During three consecutive ski seasons (1991 to 1994), 125 patients 40 years of age and older without previous shoulder injuries or surgery sustained a traumatic first-time anterior shoulder dislocation. At a minimum of 2 years' follow-up, patients were contacted to determine long-term outcome and to identify factors leading to prolonged morbidity or the need for surgical intervention. Fifty-two patients were available for interview. A modified Rowe shoulder score showed 32 excellent, nine good, eight fair, and three poor results. Eighteen (35%) rotator cuff tears were subsequently identified, with only 11 (61%) of these patients obtaining an excellent or good outcome (P = .011). Of the 11 patients with a fair or poor result, seven (64%) had a rotator cuff tear. Of the 12 patients with isolated cuff tears, 84% had an excellent or good result when treated surgically, compared with 50% when treated nonsurgically. Our findings indicate that recurrence is not a frequent complication of traumatic anterior shoulder dislocation in this age-group (4%). However, prolonged morbidity secondary to rotator cuff tear is more prevalent than in a younger population. We believe early diagnosis of rotator cuff pathology by either magnetic resonance imaging (MRI) or arthrogram with subsequent surgical repair can lead to faster restoration of function and a better outcome in these select individuals.

Adult↗
PubMed2000

High-field and low-field MR imaging of superior glenoid labral tears and associated tendon injuries.

OBJECTIVE: The purpose of this study was to determine the performance characteristics of high-field and low-field MR imaging for the diagnosis of a glenoid superior labral anteroposterior (SLAP) tear. MATERIALS AND METHODS: High-field (n = 46) or low-field (n = 21) MR imaging was performed on 41 patients with SLAP tears and 26 patients with normal superior labra. The superior labrum was classified into one of four types on the basis of patterns of intralabral signal intensity. The relative frequency of rotator cuff tears and long head of the biceps tendinopathy was also assessed. RESULTS: For the diagnosis of SLAP tear, the sensitivity of high-field MR imaging was 90% (95% confidence interval = 74%, 98%), specificity was 63% (35%, 85%), and accuracy was 80% (66%, 91%). The sensitivity of low-field MR imaging was 64% (31%, 89%), specificity was 70% (35%, 93%), and accuracy was 67% (43%, 85%). A branched linear or stellate focus of abnormal intralabral signal intensity was associated with a SLAP tear in 86% of patients. Conversely, two other labral patterns correlated with a normal superior labrum in 71% of patients. Abnormal signal intensity in the biceps tendon was seen in 15% of patients with a SLAP tear. Full-thickness (37%) and partial-thickness (31%) rotator cuff tears were often seen. CONCLUSION: The performance characteristics of high-field MR imaging are superior to those of low-field MR imaging for the diagnosis of a superior labral tear. Rotator cuff tears can be seen in many patients with superior labral tears, but abnormal signal intensity in the biceps tendon is uncommon.

Adult↗
PubMed1995

[Ultrasonography and magnetic resonance tomography (MRI) of tendon injuries].

Both ultrasound and MR imaging have become increasingly important for the assessment of tendon abnormalities. Ultrasound is widely available and is mainly suitable for emergency situations in traumatology and as a screening method. For soft tissue imaging only up-to-date sonographic equipment should be used. Moreover, the examiner's experience is crucial for adequate results. MR imaging is not as easily available. However, it is more reproducible and may be indicated in a preoperative situation. Most publications about sonography and MR imaging deal with the rotator cuff and the Achilles tendon. Fewer investigations relate to the posterior tibial tendon, the extensors of the knee and the proximal and distal biceps tendon. The role of ultrasound and MR imaging in abnormalities of these structures is discussed based on the literature and our own experience.

Achilles Tendon↗
PubMed1991

[Prostheses in recent and old complex injuries of the shoulder].

Eighty prostheses, including 46 humeral prostheses and 34 total ones, have been laid for complex injuries of the shoulder. In 56 cases, these were recent fractures, mainly of the head and tubercle of the humerus, in subject ages 65 in average. In 34 cases, the injuries were older and comprised malunion or epiphyseal necrosis. Five cases of subluxation and six of secondary displacement of the tubercles were noted. Pain was suppressed in most cases, but mobility was less satisfactory (37% exceeding 90 degrees active elevation). The humeral sealing evolved in a reassuring way, but a poorly evolutive glenoid rim was often observed. Finally, upper subluxation may occur during the evolution, which suggests the possibility of secondary ruptures in the rotator cuff.

Adult↗
PubMed2006

[Magnetic resonance imaging of glenohumeral instability].

Conventional MR imaging and MR arthrography are established diagnostic imaging modalities for investigating shoulder instability. Since there are currently various surgical shoulder stabilization methods as well as conservative treatment strategies, the role of imaging is to provide diagnostic information to help determine the therapeutic approach. Whereas conventional MR imaging is usually sufficient for the evaluation of acute shoulder injuries due to the presence of a posttraumatic joint effusion, MR arthrography is the imaging modality of choice for chronic shoulder instability. Atraumatic and microtraumatic instability of the shoulder must be distinguished from traumatic instability since clinical findings and secondary or associated injuries differ from those of traumatic instability. Injuries of the IGHL-complex can be reliably diagnosed with MR arthrography. Traumatic anteroinferior luxation causes labroligamentous injuries at the glenoid insertion (Bankart-, Perthes-, ALPSA-, and non-classifiable chronic lesions) and injuries of the IGHL and its humeral insertion (HAGL-, BHAGL-, and floating AIGL-lesions). The type of injury and extent of degenerative changes or scarring that can be assessed with MR arthrography influence the therapeutic approach and in particular the decision between arthroscopic and open surgical methods of stabilization.

Arthrography↗
PubMed1998

Tear of the posterior shoulder stabilizers after posterior dislocation: MR imaging and MR arthrographic findings with arthroscopic correlation.

OBJECTIVE: The purpose of this article is to describe the findings on MR imaging and MR arthrography in posterior capsular tear and teres minor muscle injury after posterior dislocation. We also correlate MR imaging with the arthroscopic findings and present treatment options for these patients. CONCLUSION: MR imaging is helpful in diagnosing abnormalities caused by posterior dislocation injuries and in directing therapy. Teres minor muscle and capsular injuries may occur without the typical reverse Bankart lesion. Isolated teres minor muscle tears seen on MR imaging after posterior dislocation injury may cause pain. However, no consensus exists as to whether the lesions seen on MR images in these patients should be treated surgically or conservatively.

Adolescent↗
PubMed1995

Arthroscopy of the shoulder.

Arthroscopy of the shoulder has developed during the last decade to play a major role in diagnoses and treatment of a variety of shoulder disorders. In most incidences, arthroscopy is required at the time of shoulder surgery to refine the final diagnosis. In over 75% of the cases are arthroscopic methods used for surgical repair of the shoulder pathology. This article describes the indications for surgery as well as the techniques to treat rotator cuff disease label injuries, etc. with the arthroscope. The arthroscopic techniques dealing with subacromial decompression and instability is described.

Arthroscopy↗
PubMed1991

[Role of arthroscopy in complex sports injuries].

Shoulder lesions caused by accident are often of complex nature. In most cases, different structures are involved, which cannot be distinguished and individualized clinically with certainty. Arthroscopy permits far more differentiated diagnosis with systematic revision of traumatized structures. Besides the possibility of comprehensive repair (e.g. in part arthroscopic, in part open), the faster rehabilitation attained by minimal exposures is also of importance.

Arthroscopy↗