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Biomedical subjects

P Magosch

Publications and source records attributed to P Magosch.

12 recordsLinked to original sources
PubMed2006

[Magnetic resonance analysis of the subscapularis muscle after open anterior shoulder stabilization].

PURPOSE: Analysis of the magnetic resonance imaging of the subscapularis musculotendinous unit (SSC) after primary and revision open shoulder stabilization and their correlation with the clinical function. MATERIALS AND METHODS: In a retrospective cohort study, 13 patients (mean age of group A: 36.5 years) after primary and 12 (mean age of group B: 34.2 years) after revision open stabilization underwent postoperative MRI of the shoulder. The digital data was analyzed with respect to the vertical und transverse diameters (V[slashed circle], T[slashed circle]) in a defined image slice. A signal intensity analysis was performed (infraspinatus/subscapularis signal-to-noise ratio = ISP/SSC SNR). The clinical examination included the SSC tests and signs and the Constant and Rowe score. Twelve healthy volunteers (group C) served as the control. RESULTS: From group C to group B, the mean V[slashed circle] of the SSC decreased significantly (p < 0.05) as did the mean T[slashed circle] of the cranial part of the SSC muscle (= crSSC) (p < 0.05). The mean T[slashed circle] of the caudal part of the SSC muscle (= caSSC) did not differ significantly between all groups (p > 0.05). The ISP-SSC SNR was significantly lower (p < 0.05) in the crSSC of groups A und B than in group C. In the caSSC, the SNR increased in groups A and B. In 53.8 % of group A and 92.3 % of group B, clinical signs of SSC insufficiency were found. There was no significant difference between the Constant and the Rowe score in both groups (p > 0.05). Complete tendon ruptures were not observed in any case. CONCLUSIONS: MRI enables semi-quantitative analysis of the postoperative changes of the subscapularis muscle. The decrease of the ISP/SSC SNR points to a fatty degeneration in the crSSC. The results provide indications of the causes of the clinical dysfunction of the subscapularis musculotendinous unit after open shoulder stabilization.

Adult↗
PubMed2006

Transfer of the tendon of latissimus dorsi for the treatment of massive tears of the rotator cuff: a new single-incision technique.

We describe 14 patients who underwent transfer of latissimus dorsi using a new technique through a single-incision. Their mean age was 61 years (47 to 76) and the mean follow-up was 32 months (19 to 42). The mean Constant score improved from 46.5 to 74.6 points. The mean active flexion increased from 119 degrees to 170 degrees , mean abduction from 118 degrees to 169 degrees and mean external rotation from 19 degrees to 33 degrees . The Hornblower sign remained positive in three patients (23%) as did the external rotation lag sign also in three patients (23%). No patient had a positive drop-arm sign at follow-up. No significant difference was noted between the mean pre- and postoperative acromiohumeral distance as seen on radiographs. An increased grade of osteoarthritis was found in three patients (23%). Electromyographic analysis showed activity of the transferred muscle in all patients.

Activities of Daily Living↗
PubMed2006

Three-dimensional glenoid deformity in patients with osteoarthritis: a radiographic analysis.

BACKGROUND: In osteoarthritis of the shoulder, the tilt of the glenoid surface undergoes an eccentric deformation not only in the anteroposterior but also in the superoinferior direction. The goals of this study were to analyze glenoid version in the coronal plane and to clarify the relationship between retroversion and inferior inclination of the glenoid. METHODS: Standardized radiographs of 100 consecutive patients with primary osteoarthritis of the shoulder and 100 otherwise healthy patients with shoulder pain (the control group) were included in this study and were analyzed by two independent observers. RESULTS: We defined four different types of inclination deformity of the glenoid. In a type-0 glenoid, a line at the base of the coracoid process and a line at the glenoid rim run parallel. Both lines intersect below the inferior glenoid rim in a type-1 glenoid. In a type-2 glenoid, the line at the base of the coracoid process and the glenoid line intersect between the inferior glenoid rim and the center of the glenoid. In a type-3 glenoid, the lines intersect above the base of the coracoid process. A significant difference (p < 0.0001) in the distribution of glenoid types between the two patient groups was observed. Forty-seven patients with osteoarthritis showed combined posterior and inferior glenoid wear. We found no correlation between the type of inclination and the type of glenoid morphology. The interobserver reliability of our observations was very high. CONCLUSIONS: In osteoarthritis, eccentric inferior glenoid wear is frequent and independent from retroversion deformity of the glenoid. Normalization of glenoid version in both transverse and coronal planes may reduce eccentric loading of the prosthetic glenoid, which has been associated with loosening.

Adult↗
PubMed2005

Intra-articular volume assessment in glenohumeral instability.

It is commonly claimed that instability of the shoulder is associated with an enlarged joint volume. The purpose of our study was to assess the intra-articular volume in acute and chronic glenohumeral dislocation. Sixty-seven patients were examined by intra-articular infusion of saline solution. Three groups could be formed. Group 1 (n = 51) consisted of patients with first time traumatic dislocation, group 2 (n = 8) of cases with recurrent post-traumatic dislocation. The patients of group 3 (n = 8) suffered from impingement syndrome and served as the control group. The joint volume was correlated to the body surface area (BSA). We found a strong correlation between height, sex and intra-articular joint volume. There was no statistically significant difference in joint volume correlated to BSA between the three groups. There is no statistically significant difference in joint volume correlated to BSA in patients with traumatic anterior instability, chronic instability and individuals without glenohumeral instability.

Adolescent↗
PubMed2005

[Traumatic anterior shoulder dislocation].

The purpose of this paper is to outline the present state of treatment for traumatic anterior shoulder dislocation. Pathoanatomic changes as well as intrinsic and extrinsic prognostic factors are discussed. Based on these, treatment options for first time traumatic dislocations and chronic posttraumatic instability are recommended.

Arthroplasty↗
PubMed2004

[Shoulder Arthroplasty. Surgical management].

Shoulder arthroplasty covers an extensive indication spectrum of degenerative, inflammatory to infectious, tumorous, instability-associated and neurogenic disease to acute trauma and posttraumatic joint destruction. Each of these indications requires its own regime and an appropriate implant. Osteoarthritis is the most frequent indication, and will be used as an example for surgical management, bringing the manufacturer-nonspecific general guidelines, joint mechanics and surgical technology into agreement. The fundamentals of the technique of implantation refer to the anatomical adaptability of the third generation of shoulder prostheses, which permits an accurate reconstruction of glenohumeralen joint centring. This article also describes far-reaching principles, which are generally applicable to all indications for shoulder arthroplasty.

Arthroplasty, Replacement↗
PubMed2004

[Shoulder instability. Classification and treatment].

Shoulder instability includes different degrees of instability from painful hyperlaxity to subluxation to dislocation. Different classifications of shoulder instability have been created in order to facilitate decision making for treatment. None of these, however, has gained acceptance. Subject to the indications, shoulder instability can be treated conservatively or surgically after repositioning the acute dislocation. A survey of arthroscopic and open stabilization procedures and their results are given in relation to the indications.

Arthroscopy↗
PubMed2004

Osteochondral autologous transplantation for the treatment of full-thickness articular cartilage defects of the shoulder.

We performed eight osteochondral autologous transplantations from the knee joint to the shoulder. All patients (six men, two women; mean age 43.1 years) were documented prospectively. In each patient the stage of the osteochondral lesion was Outerbridge grade IV with a mean size of the affected area of 150 mm2. All patients were assessed by using the Constant score for the shoulder and the Lysholm score for the knee. Standard radiographs, magnetic resonance imaging and second-look arthroscopy were used to assess the presence of glenohumeral osteoarthritis and the integrity of the grafts. After a mean of 32.6 months (8 to 47), the mean Constant score increased significantly. Magnetic resonance imaging revealed good osseointegration of the osteochondral plugs and congruent articular cartilage at the transplantation site in all but one patient. Second-look arthroscopy performed in two cases revealed a macroscopically good integration of the autograft with an intact articular surface. Osteochondral autologous transplantation in the shoulder appears to offer good clinical results for treating full-thickness osteochondral lesions of the glenohumeral joint. However, our study suggests that the development of osteoarthritis and the progression of pre-existing osteoarthritic changes cannot be altered by this technique.

Adult↗
PubMed2003

[Superior labrum-biceps anchor complex].

The focus in overhead sport injuries of the shoulder has been directed on lesions of the superior labrum-biceps complex during the last few years. This is due to improved imaging modalities as well as a better understanding of the anatomy and biomechanics. Arthroscopy is capable of diagnosing and treating these lesions. The anatomy, biomechanics, and operative treatment strategies and techniques are described in detail. The superior labrum anterior-posterior (SLAP) lesion is found in young active overhead athletes. Based on their classification and concomitant lesions, the unstable SLAP lesions (types II and IV) have to be repaired in order to restore stability to the superior labrum-biceps complex for stabilizing the glenohumeral joint. According to our own results and after review of the current literature, SLAP repair yields good results in overhead athletes enabling them to return to pain-free participation in their sport.

Adult↗
PubMed2002

[Proximal humeral head fractures--Future development of shoulderimplants].

In 1951 a shoulder prosthesis was developed for the treatment of complex humeral head fractures by Neer. The Neer-II-Prosthesis, which was developed further in 1973 represents the basis of modern shoulder implants. The unsatisfactory postoperative functional results for primary humeral head replacement required the development of new adaptable implants for the treatment of complex humeral fractures, which allow the reconstruction of humeral length, the reconstruction of center of rotation and humeral offset, the anatomic positioning, the reconstruction of retrotorsion and the secure refixation of the tuberosities. The development of third and fourth generation of humeral head prosthesis achieves a three-dimensional adaptability for the conditions of posttraumatic arthritis. Primary and secondary humeral head replacement in humeral head fractures as well as revision of prosthetic replacement are complex and technical demanding operations with high and different requirements on implants having to be realised on further development.

Forecasting↗
PubMedDate not supplied

[Radial shock wave therapy in calcifying tendinitis of the rotator cuff--a prospective study].

AIM: The aim of the study is to evaluate the influence of radial shock wave therapy (RSWT) on the course of calcifying tendinitis of the rotator cuff. MATERIAL AND METHODS: 35 patients with a mean age of 47.5 years suffering from calcifying tendinitis stage Gaertner 2 with a mean size of 16.6 mm in typical location (true-ap view) for a mean of 28 months were treated by low-energy RSWT three times. The acromio-humeral distance averaged 10.4 mm measured at the true-ap view. All patients were clinically and radiologically followed-up at 4 weeks, 3, 6 and 12 months after the last treatment. RESULTS: The Constant score improved significantly (p < 0.0001) during the first 4 weeks after RSWT from a mean of 68.5 to a mean of 80.5 points and remained approximatively constant at 3, 6 and 12 months follow-up. After 4 weeks 25.7% of the patients had no pain, 54.3% reported about pain relief. In the course of the follow-up a significant improvement of pain was observed: up to 80.8% painless and 19.2% pain relief 12 months after RSWT. Radiologically 4 weeks after RSWT the X-ray examination showed in 17.6% no calcific deposit, in 20.5% a disintegration and in 61.5% no changes of the calcific deposit. At further follow-up we found a complete resorption of the calcific deposit in 75% up to 12 months after RSWT and 25% had no change in calcific deposit. Overall three patients (8.5%) had to undergo surgical treatment 3-7 months after RSWT. CONCLUSION: The low-energy RSWT leads within the first 4 weeks to a significant pain relief and an improvement of shoulder function. In consideration of the long history, the size and the spontaneous resorption rate of the calcific deposit, an inductive effect of RSWT on the resorption of the calcific deposit can be assumed.

Acromioclavicular Joint↗