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Biomedical subjects

C Rangger

Publications and source records attributed to C Rangger.

At least 19 recordsLinked to original sources
PubMed2007

[Elastic titanium nails in minimally invasive osteosynthesis for mid-clavicular fractures].

BACKGROUND: In up to 31% of cases, conservative treatment of mid-clavicular fractures leads to unsatisfactory results. The aim of this study was to define the value of minimally invasive elastic stable intramedullary nailing (ESIN) of mid-clavicular fractures with titanium elastic nails. MATERIAL AND METHODS: Within 5 years, ESIN was performed in 45 patients. We studied the functional results and complications. RESULTS: Retrospectively we analysed the results of all patients at a mean follow-up of 24.7+/-2.4 months. Iatrogenic perforation of the lateral cortex occurred twice and medial migration in eight patients. Superficial skin infection developed in one. Nail breakage after fracture healing was observed twice. Twelve patients sustained clavicular shortening of > or =5 mm in relation to the intact contralateral side. After 6 months the mean constant score was 94.3+/-2 points, and the mean DASH score was 5.4+/-2.2 points. CONCLUSION: Intramedullary stabilisation of mid-clavicular fractures with titanium elastic nails is a minimally invasive technique with good functional results. Patients must be informed about the possibility of open reduction in about half of the cases as well as shoulder asymmetry, migration of the nail, and iatrogenic nerve and vessel injury.

Adult↗
PubMed2006

Retropatellar chondromalacia associated with medial osteoarthritis after meniscus injury. One year of observations in sheep.

BACKGROUND/AIMS: In an ovine meniscal repair model, the patellofemoral (PF) osteoarthritis due to a non-sutured tear or failed repair was investigated. METHODS: A radial meniscus tear was either sutured with polydioxanone (PDS), with a slow degrading polylactide long-term suture(LTS) or left without treatment. Knee joint cartilage in the PF and medial compartment was evaluated compared to normal knees (healthy controls). RESULTS: Retropatellar osteoarthritis in the non-sutured and sutured animals was intense in contrast to the control knees after 6 months in all groups (p < 0.001), and after 12 months in the PDS group (p < 0.001), LTS group and non-sutured animals (p < 0.05). CONCLUSION: Non-sutured meniscus tears and failed repair lead fast to intense PF osteoarthritis corresponding with tibial damage of the injured compartment.

Animals↗
PubMed2006

Cementless hemiarthroplasty in femoral neck fractures: evaluation of clinical results and measurement of migration by EBRA-FCA.

Aim of the present study was to evaluate migration rates of cementless primary hemiarthroplasty in acute femoral neck fractures. In a longitudinal, prospective study 46 patients were treated by cementless hemiarthroplasty. Clinical follow up was correlated with the EBRA-FCA method. In 30% of all patients stem migration amounted to more than 2 mm; further, these patients were seen to have a high level of activity. A high degree of migration in more than 30% of all patients requires critical scepticism toward further use of the investigated cementless stem as hemiarthroplasty. According to literature, migration of more than 2 mm suggests a high probability of early aseptic loosening. In patients with a low degree of activity good results could be observed; nevertheless, in patients with a high level of activity the combination of the investigated cementless stem with a solid fracture head cannot be recommended.

Aged↗
PubMed2006

[Primary care of fractures of the extremities].

The initial care of a fractured bone provided by the general physician includes reduction followed by immobilization and the treatment of pain. Open fractures must be covered by a sterile dressing, prior to the transportation of the patient to a hospital. Depending upon the severity of the injury, further treatment is provided by an orthopedic surgeon or in an appropriate hospital.

Extremities↗
PubMed2006

[Fractures of the extremities--surgical or conservative treatment?].

When a fracture of an extremity has been established, the question immediately arises: should it be treated conservatively or surgically? For each of these options the three "R's" of fracture treatment apply "reduction, retention, rehabilitation". In humans, the most common fracture is that of the distal radius, which is usually amenable to conservative treatment. A fracture of the ankle is treated conservatively only when it is stable with no syndesmotic injury, and the fragments are in good alignment. Should surgical treatment be necessary, stabilization is accomplished with a plate and screws. The advantages and disadvantages of each of the options must be weighed up on an individual basis.

Extremities↗
PubMed2006

[After care of fractures of the extremities].

Today, early mobilization is recommended, irrespective of whether a patient with a fracture of the extremities has been treated conservatively or surgically. In this way, morbidity and mortality risks can be considerably reduced, in particular in the elderly patient. As a result of the continuing trend towards an ever shorter hospital stay, the general physician is faced with the task of providing aftercare to such patients at an early stage in the healing process of the fracture. This includes wound care, prevention of thromboembolism, the timely initiation of physiotherapeutic measures, and the requesting of x-ray follow-up.

Aftercare↗
PubMed2006

[Helical computed tomography in penetrating injury to the torso. Diagnostic value in emergent use].

BACKGROUND: Nontherapeutic laparotomy and thoracotomy rates in penetrating torso trauma remain high. The aim of this study was to define the value of helical computed tomography (CT) in this emergency situation. MATERIAL AND METHODS: Retrospectively, we studied 11 hemodynamically stable patients with penetrating injury to the torso admitted to our trauma center over a 3-year period who underwent intravenous contrasted helical CT immediately after admission. A positive CT scan was defined as showing any evidence of intrathoracal or intra-abdominal injury necessitating immediate operation. Patients with positive CT underwent laparotomy and/or thoracotomy. Patients with negative CT were observed. RESULTS: Eleven consecutive patients were studied: nine male, two female; mean age 39 years (range 19-62). Nine stab wounds and two shotgun wounds were seen. Seven patients had positive helical CT findings, and four patients were negative. All patients with positive CT findings were operated on; those with negative scans recovered uneventfully. This imaging method accurately predicted whether thoracotomy or laparotomy was needed in 10/11 cases. CONCLUSION: In penetrating torso trauma, helical CT can clarify the need for thoracotomy or laparotomy vs nonoperative treatment.

Abdominal Injuries↗
PubMed2006

[Bipolar dislocation injury of the forearm].

Bipolar dislocation injury of the forearm is rarely documented. It is a combined forearm injury with trauma on the elbow side and on the side of the wrist joint. We describe two different cases of this complex dislocation. The first patient suffered from a Monteggia-like dislocation fracture with transscaphoid dislocation of the wrist. The second person had an acute longitudinal radioulnar membrane dissociation after elbow dislocation with an additional scapholunate tendon rupture. The difficult management of these injuries is illustrated by these cases.

Elbow Joint↗
PubMed2004

[Spondylodiscitis after perioperative peridural catheter].

Peridural anaesthesia is used to avoid operative, postoperative and chronic pain, especially in surgery, gynecology and urology. Complications have rarely been described but can entail serious local and systemic sequelae. Three cases with spondylitis and spondylodiscitis after peridural anaesthesia are presented. The failure to recognize the peridural catheter as the cause of vertebral pain led to therapeutic delay in two cases. The result of antimicrobial therapy and in two cases radical surgical treatment was complete recovery. The occurrence of spondylodiscitis after the use of peridural catheters is often a late manifestation of disseminated pathogens. The insidious progression of infection and non-specificity of clinical symptoms may lead to diagnostic delay. Awareness of the possibility of even delayed complications after the use of peridural anaesthesia is important.

Adult↗
PubMed2004

[Benign desmoplastic fibroblastoma of the lower leg. A rare case].

Desmoplastic fibroblastoma ("collagenous fibroma") is a benign fibrous soft tissue tumor. We report a rare case of a "collagenous fibroma" located in the proximal lower leg in 56-year-old man. The clinical, radiological, and pathological-morphological findings are documented. The operative treatment was performed according to general principles of surgical management of benign soft tissue tumors.

Fibroma, Desmoplastic↗
PubMed2002

[Total endoprosthesis of the upper ankle joint after post-traumatic arthrosis].

In 1997 six patients with posttraumatic ankle arthritis aged 54 (45-71) years were treated with a LINK S.T.A.R. ankle prothesis. The average follow up was 29 (21-36) months. Results were evaluated according to the ankle score of H. Kofoed [7]. Two patients had an excellent outcome and 1 patient had a fair result. In three patients secondary arthrodesis had to be performed, due to loosening of the implant. Based on our experiences we cannot recommend this implant for patients with posttraumatic arthritis at this time.

Aged↗
PubMed2002

[Capacity to participate in sports after injuries of the acromioclavicular joint].

In 79 patients athletic activities were evaluated retrospectively 32 months after grade II and grade III sprains of the acromioclavicular joint. Group I consisted of 29 patients with grade II sprains according to Tossy and group II consisted of 50 patients with grade III sprains according to Tossy. In group Ia 14 patients underwent surgery, and in group Ib 15 patients were treated nonsurgically. In group IIa 41 patients were treated surgically, and in group IIb 9 patients were treated conservatively. Forty-seven patients were injured during participation in sports. Among these 16 were injured during participation in their specific sport. In group I patients had to curtail sports activities more frequently after surgery than after conservative treatment (p < 0.05). In group II the reduction of sports activities was not different for the two treatment groups. Of a total of 79 patients, 23 had to reduce their sports activities. Among these, 7 patients had to give up sports. All patients had performed overhead athletic activities. Climbers and patients performing strength training had to reduce their activities or give up sports. Additionally, sprains of the acromi-oclavicular joint adversely affected athletic activities in overhead ball sports, bicycling, and skiing irrespective of treatment.

Acromioclavicular Joint↗
PubMed2000

[Surgical stabilization of per- and subtrochanteric femoral fractures with the gamma nail].

BACKGROUND: From 1992 through 1997 96 patients with per- or subtrochanteric femur fractures were treated with a Gamma nail. We retrospectively evaluated the influence of patient age, additional diseases, type of fracture, time of operation, type of implant (short/long Gamma nail) and surgical approach (open/closed reduction) on the mobility of the patients, healing of the fractures on radiographs, and possible complications. PATIENTS AND METHODS: The average patient age was 72.5 years (range 27 to 101). There were 27 male and 69 female patients. Surgery was performed 1.19 (0-10) days after injury. At 3, 6, and 12 months after surgery radiographs of the involved hip joint and femur were obtained and the degree of mobility was assessed. RESULTS: Additional diseases, type of fracture, time of operation, type of implant (short/long Gamma nail) and surgical approach (open/closed reduction) did not influence mobility of the patients, healing of the fractures on radiographs or rate of complications. It was more difficult to mobilize older patients (P < 0.001). After 1 year 97% of all fractures had healed on radiographs. In 15 patients (18%) complications occurred due to technical errors using the Gamma nail. DISCUSSION: With the Gamma nail stable osteosynthesis of per- and subtrochanteric femur fractures is obtained independently of the fracture classification. Patients can be mobilized immediately. Technical errors must be avoided.

Adult↗
PubMed1998

Bone bruise of the knee: histology and cryosections in 5 cases.

We evaluated the histopathologic and cryosectional appearance of bone bruise injuries of the knee detected on MRI. Histologic evaluation of bone biopsies from 3 patients revealed microfractures of cancellous bone, edema and bleeding in the fatty marrow. Between intact lamellar bone trabecules, fragments of hyaline cartilage mixed with highly fragmented bone trabecules were found. Postmortem specimens were obtained from 2 more patients, killed in motor vehicle accidents. MRI revealed bone bruise injuries of the lateral femoral condyle and of the lateral tibial plateau in 1 knee and anterior cruciate ligament disruption, a medial meniscus tear and bone bruise injury of the tibial plateau and of the lateral femoral condyle in the other specimen. The specimens were embedded in physiologic saline solution and frozen to -30 degrees C. By rotationcryotomy, 1 mm slices were removed from the surface of the specimens and documented on photographs. Subchondral lesions and bleeding were found, corresponding to the MR images.

Adult↗