[Magnetic resonance morphologic changes in shoulder joints of world class water polo players].

Unlabelled: In a prospective study we examined the dominant shoulder of 11 athletes from the 1992 German Olympic water polo team. Their mean age was 25.4 +/- 3.

[Nuclear magnetic tomography of the meniscus in asymptomatic probands].

In 82 asymptomatic subjects aged 8-62 years we evaluated the menisci by MRI [1.0 tesla; SE (spin-echo) 700/20, PS (partial saturation) 500/10, STIR (Short-Time-Inversion-Recovery-Sequence) 1600/130/30]. The meniscus was graded by means of a standard classification (grades 0-4).

[Stress on the rotator cuff sutures in relation to joint position].

Unlabelled: In a vitro study we evaluated the influence of surgical technique on the postoperative tension of the supraspinatus tendon in rotator cuff ruptures. In ten shoulder specimens Hall-Effect Strain Gauge (HEST) were implanted in the supraspinatus tendon close to the insertion at the humerus. We documented the tension in specimens with intact rotator cuff as well as after reconstruction of small and large tears in different joint positions.

[Long-term results following percutaneous facet coagulation].

Unlabelled: 93 patients with a mean follow up of 73 months (30-133 months) after lumbar percutaneous radiofrequency denervation (PRFD) were evaluated. Mean age of the patients at time of surgery was 47 years (18-76 years). 54 patients had no lumbar spine surgery prior to facet denervation, 32 patients had one or multiple disc surgery prior to denervation, and 7 patients had spinal fusions.

[Intravenous administration of gadolinium DPTA in proton spin tomography of the knee joint].

Unlabelled: In a prospective study we evaluated the benefits of iv-application of gadolinium-DPTA examining 25 patients with degenerative disease of the knee joint by MRI (1.0 Tesla). All patients were scanned with standard spin echo sequences (SE 500/20), short time inversion recovery sequences (STIR 1600/100), and FEDIF sequences (FEDIF 500/10).

[Arthroscopy of the upper ankle joint. List of indications from the literature--realistic expectations--complications].

Based on the results of a retrospective study of 116 patients who underwent diagnostic and surgical arthroscopy of the ankle, we present the technique, the results, the complications, and the indications for ankle arthroscopy. The average age of the patients was 33 years (range 10-70 years). At follow-up the patients were examined clinically as well as radiologically.

Arthroscopy in patients with knee endoprostheses.

Remarkable advances have been made in knee replacement. Nevertheless, patients and surgeons still face unsolved problems following implantation of an artificial knee joint. In some cases arthroscopy may serve as a diagnostic or surgical tool.

Arthroscopic resection of the acromioclavicular joint (ARAC).

In 65 patients an arthroscopic resection of the AC-joint (ARAC) was performed. The data of 27 male and 24 female patients with a minimum follow-up of 6 months were available for analysis. 2 patients had bilateral procedures.

Function of the glenohumeral ligaments in active stabilisation of the shoulder joint.

Unlabelled: The joint capsules and the glenohumeral ligaments of 12 human shoulder specimens were histologically investigated by light microscopy. Serial sections of 15 microns thickness were cut. The tissue was stained following the haematoxylin-eosin and van Giesson techniques.

Does the glenohumeral joint capsule have proprioceptive capability?

We performed a clinical study examining 60 volunteers with stable shoulder joints randomized to two groups. In group 1 we injected 5 ml lidocaine intra-articularly. In group 2 we injected 5 ml saline with 5 ml contrast dye the same way.

[Accuracy of pedicle screws following instrumented dorsal fusion of the lumbar spine].

We evaluated the placement of pedicle screws (N = 131) in 30 patients after lumbar dorsal spinal fusion. Postoperatively all patients were examined by CT. 39.

[Changes in the lumbar disk following use of non-automated percutaneous discectomy. A biomechanical study].

For a biomechanical study 8 specimens of the lumbar spine (L1-S1) were scanned with MRI. After that 21 motion segments were prepared for the experiments. The paraspinal musculature as well as the posterior elements were removed.

[How much intervertebral disk tissue is in reality removed in percutaneous nucleotomy?].

In an experimental study with standardized conditions nuclear material of 40 human lumbar discs was excised. In 20 the non-automated discectomy method was used (NAPLD-method). In the other 20 the automated discectomy method (APLD-method).

Restriction of indication for automated percutaneous lumbar discectomy based on computed tomographic discography.

This report details the authors' early experience using the automated percutaneous lumbar discectomy (APLD) procedure, developed by Onik et al., in 97 patients with a disc protrusion. In the evaluation of a herniated disc, we used computed tomography (CT) discography.

Biomechanical changes of the lumbar intervertebral disc after automated and nonautomated percutaneous discectomy: an in vitro investigation.

A total of 40 human lumbar motion segments were prepared and tested in an electromechanical materials testing machine to investigate the biomechanical changes, i.e., intradiscal pressure, radial extension, and height of the intervertebral disc, after percutaneous discectomy.

[Arthroscopic subacromial decompression. 1-3 year results].

In 148 patients with impingement lesion type I or type II, we performed an arthroscopic subacromial decompression (ASD). 122 patients ran a follow up one to three years post-operatively. All patients were pre- and postoperatively documented by a 100 point shoulder score.

[Medical applications of electronic data processing in surgery, trauma surgery and orthopedics. Results of a survey of 1,450 clinics].

With a standardized questionnaire we evaluated 1450 orthopedic and general surgery departments. The response rate was 57.2%, 52% of the departments were using computers for different purposes.

[Nuclear magnetic resonance tomography diagnosis of changes in the glenoid process in patients with unstable shoulder joints].

Unlabelled: In 4 fresh specimens and in 14 healthy volunteers we studied normal anatomy of the glenoid labrum by MRI. In a total of 124 patients we examined the shoulder joints by MRI. 69 patients had any kind of subacromial pathology.

[Arthroscopy of the elbow joint. Long-term results, complications and indications].

Unlabelled: Based on the results of a retrospective study of 67 patients who had diagnostic and surgical arthroscopy of the elbow from 1977 until 1990, we present the technique, results, complications, and indications for elbow arthroscopy. The average age of the patients was 26 years (range: 11-59). At follow-up, the patients were examined both clinically and radiologically.

[Ultrasound diagnosis of lumbar intervertebral disk displacement--a clinically relevant method?].

Unlabelled: In a prospective clinical study, 102 patients suffering from low back pain were examined by ultrasound. In all patients the segments L3/4, L4/5, and L5/S1 were evaluated. We analysed a total of 306 lumbar disc segments.

[Possibilities of nuclear magnetic resonance tomography in diagnosis of osteochondrosis dissecans of the knee joint].

20 patients who suffered from osteochondrosis dissecans in the knee were examined by x-ray and MRI. Afterwards all joints were evaluated by arthroscopy. On plain x-ray the judgement of joint cartilage is not possible.

[Diagnosis and therapy of sternoclavicular joint dislocation].

Luxation of the sternoclavicular joint is described on the basis of the case histories and progress of patients with this very rare form of injury who underwent surgical treatment on the Orthopedic Clinic of Düsseldorf University Hospital in the years 1978 to 1988. Four of the 6 patients in our study were subjected to a follow-up examination as out-patients. After preliminary remarks on the anatomical and biomechanical peculiarities of the sternoclavicular joint, the various types of luxation and the customary Allmann I-III classification for degree of severity are discussed.

[Concomitant occult osseous injuries in knee joint injuries].

In 28 patients with different knee injuries, we documented intraosseous lesions by MRI, although on plain X-rays no abnormality had been discovered. The intraosseous abnormalities seen by MRI were classified into four categories. 1.

[Proton spin and computerized tomography in ligament injuries of the knee joint].

Unlabelled: In a prospective study we evaluated the use of cat-scan an MRI in 106 patients with chronic complaints and acute injuries of the knee joint. All patients went to surgery afterwards. A total of 30 patients suffered from acute or chronic ligament ruptures.

[Appearance of the femur head epiphysis in healthy children and in children with hip dysplasia].

In a retrospective study we evaluated 4341 sonographic examinations of 1160 healthy children and 209 children with congenital hip dysplasia with special reference to the appearance of the femoral head epiphysis. In healthy children the epiphysis appeared between the first and seventh month. In more than 95% of the children, the epiphysis was sonographically present after the seventh month.