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Dive into the research topics where Hans Törnkvist is active.

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Featured researches published by Hans Törnkvist.


Journal of Bone and Joint Surgery-british Volume | 1997

TREATMENT OF DISPLACED PROXIMAL HUMERAL FRACTURES IN ELDERLY PATIENTS

K. Zyto; Leif Ahrengart; A. Sperber; Hans Törnkvist

We randomised 40 elderly patients of mean age 74 years with displaced three- or four-part fractures of the humerus to either conservative treatment or tension-band osteosynthesis. At one year and after three to five years, clinical follow-up showed no functional differences between the two groups of patients, with optimal function achieved within one year. There were major complications only in the surgically-treated group. Radiological review showed that surgery had improved the position of the fractured humeral head, but this was not reflected in improved function. Semi-rigid fixation with tension-band wiring of displaced multifragment fractures of the proximal humerus in the elderly did not improve the functional outcome when compared with conservative treatment.


American Journal of Sports Medicine | 1991

Soccer injuries among elite female players

Björn Engström; Christer Johansson; Hans Törnkvist

Injuries occurring in two female elite soccer teams were recorded during 1 year. Of 41 players, 33 (80%) sus tained 78 injuries. The incidence of injury during games was 24/1000 hours, while the incidence during training was 7/1000 hours. The majority (88%) of injuries were localized to the lower extremities, with equal occur rence in the left and right legs. Forty-nine percent of the injuries occurred in the knee or ankle. Most of the injuries were minor (49%), while 36% were moderate and 15% were major. Of the major injuries (N = 12), 10 were due to trauma and 7 (58%) were knee ligament or meniscal tears. Overuse injuries constituted 28% of all injuries and occurred mainly during preseason train ing and at the beginning and end of the competitive season. Traumatic injuries (72%) occurred mainly dur ing games with a predominance at the beginning of the competitive season. Almost 80% of the traumatic inju ries occurred during physical contact with an opponent. Extrinsic factors such as weather, playing surface, tem perature, or the position of the player within the team did not influence the injury rate. We conclude that female elite soccer players sustain a high incidence of injury. Few injuries were major, but 17% of the players sustained a major knee injury during the year.


Journal of Bone and Joint Surgery-british Volume | 2007

A randomised controlled trial comparing bipolar hemiarthroplasty with total hip replacement for displaced intracapsular fractures of the femoral neck in elderly patients

Richard Blomfeldt; Hans Törnkvist; Karl Eriksson; Anita Söderqvist; Sari Ponzer; Jan Tidermark

The best treatment for the active and lucid elderly patient with a displaced intracapsular fracture of the femoral neck is still controversial. Randomised controlled trials have shown that a primary total hip replacement is superior to internal fixation as regards the need for secondary surgery, hip function and health-related quality of life. Despite good results achieved with total hip replacement in this group, most orthopaedic surgeons still advocate hemiarthroplasty for this injury. We studied 120 patients with a mean age of 81 years (70 to 90) with an acute displaced intracapsular fracture of the femoral neck. They were randomly allocated to be treated with either a bipolar hemiarthroplasty or total hip replacement. Outcome measurements included peri-operative data, general and hip-specific complications, hip function and health-related quality of life. The patients were reviewed at four and 12 months. The duration of surgery was longer in the total hip replacement group (102 minutes (70 to 151)) versus 78 minutes (43 to 131) (p<0.001), and the intra-operative blood loss was increased 460 ml (100 to 1100) versus 320 ml (50 to 850) (p<0.001), but there were no differences between the groups regarding any complications or mortality. There were no dislocations in either group. Hip function measured by the Harris hip score was significantly better in the total hip replacement group at both follow-up periods (p=0.011 and p<0.001, respectively). The health-related quality of life measure was in favour of the total hip replacement group but did not reach statistical significance (p=0.818 at four months and p=0.636 at 12 months). These results indicate that a total hip replacement provides better function than a bipolar hemiarthroplasty as soon as one year post-operatively, without increasing the complication rate. We recommend total hip replacement as the primary treatment for this group of patients.


Journal of Bone and Joint Surgery-british Volume | 2006

Fractures of the shaft of the humerus. An epidemiological study of 401 fractures.

Radford Ekholm; Johanna Adami; Jan Tidermark; K. Hansson; Hans Törnkvist; Sari Ponzer

We studied the epidemiology of 401 fractures of the shaft of the humerus in 397 patients aged 16 years or older. The incidence was 14.5 per 100,000 per year with a gradually increasing age-specific incidence from the fifth decade, reaching almost 60 per 100, 000 per year in the ninth decade. Most were closed fractures in elderly patients which had been sustained as the result of a simple fall. The age distribution in women was characterised by a peak in the eighth decade while that in men was more even. Simple fractures were by far the most common and most were located in the middle or proximal shaft. The incidence of palsy of the radial nerve was 8% and fractures in the middle and distal shaft were most likely to be responsible. Only 2% of the fractures were open and 8% were pathological. These figures are representative of a population with a low incidence of high-energy and penetrating trauma, which probably reflects the situation in most European countries.


Journal of Bone and Joint Surgery-british Volume | 2003

Internal fixation compared with total hip replacement for displaced femoral neck fractures in the elderly: A RANDOMISED, CONTROLLED TRIAL

Jan Tidermark; Sari Ponzer; Olle Svensson; Anita Söderqvist; Hans Törnkvist

The treatment algorithms for displaced fractures of the femoral neck need to be improved if we are to reduce the need for secondary surgery. We have studied 102 patients of mean age 80 years, with an acute displaced fracture of the femoral neck. They were randomly placed into two groups, treated either by internal fixation (IF) with two cannulated screws or total hip replacement (THR). None showed severe cognitive dysfunction, all were able to walk independently, and all lived in their own home. They were reviewed at four, 12 and 24 months after surgery. Outcome measurements included hip complications, revision surgery, hip function according to Charnley and the health-related quality of life (HRQoL) according to EuroQol (EQ-5D). The failure rate after 24 months was higher in the IF group than in the THR group with regard to hip complications (36% and 4%, respectively; p < 0.001), and the number of revision procedures (42% and 4%, p < 0.001). Hip function was significantly better in the THR group at all follow-up reviews regarding pain (p < 0.005), movement (p < 0.05 except at 4 months) and walking (p < 0.05). The reduction in HRQoL (EQ-5D index score) was also significantly lower in the THR group than in the IF group, comparing the pre-fracture situation with that at all follow-up reviews (p < 0.05). The results of our study strongly suggest that THR provides a better outcome than IF for elderly, relatively healthy, lucid patients with a displaced fracture of the femoral neck.


Journal of Bone and Joint Surgery, American Volume | 2005

Comparison Of Internal Fixation With Total Hip Replacement For Displaced Femoral Neck Fractures: Randomized, Controlled Trial Performed At Four Years

Richard Blomfeldt; Hans Törnkvist; Sari Ponzer; Anita Söderqvist; Jan Tidermark

BACKGROUND Recent randomized, controlled trials performed at two years postoperatively have shown that a primary total hip replacement is superior to internal fixation for the treatment of a displaced femoral neck fracture in a relatively healthy, mentally competent, elderly patient. The primary aim of the present study was to evaluate the outcomes at four years. METHODS One hundred and two patients (mean age, eighty years) who had an acute displaced femoral neck fracture were randomly allocated to be treated with total hip replacement or internal fixation. The inclusion criteria were an age of at least seventy years, absence of severe cognitive dysfunction, an independent living status, and the ability to walk independently. The main outcome measurements were hip complications, reoperations, hip function, and health-related quality of life. RESULTS The mortality rate was 25% in both groups. At the forty-eight-month follow-up evaluation, the rate of hip complications was 4% in the patients treated with total hip replacement and 42% in those treated with internal fixation (p < 0.001) and the reoperation rates were 4% and 47%, respectively (p < 0.001). The arthroplasty group had no additional hip complications or reoperations between the twenty-four and forty-eight-month follow-up visits. In the fixation group, the percentage of hip complications increased from 36% to 42% and the percentage of reoperations increased from 42% to 47% during the same period. The hip function was significantly better and the decline in health-related quality of life was less pronounced in the arthroplasty group than it was in the fixation group at the four, twelve, and twenty-four-month follow-up evaluations. Ninety-seven percent of the patients in the arthroplasty group and 57% of the patients in the fixation group who were available for follow-up at forty-eight months had no hip complications (p < 0.001). CONCLUSIONS Compared with internal fixation, primary total hip replacement provides a better outcome for mentally competent elderly patients with a displaced femoral neck fracture. The complication and reoperation rates were significantly lower and hip function and health-related quality of life were at least as good at four years after the surgery.


Clinical Orthopaedics and Related Research | 2002

A randomized study of the compression hip screw and gamma nail in 426 fractures

Leif Ahrengart; Hans Törnkvist; Per Fornander; Karl-Göran Thorngren; Lauri Pasanen; Per Wahlström; Seppo Honkonen; Urban Lindgren

A prospective, randomized study comparing the compression hip screw with the Gamma nail in the treatment of 426 intertrochanteric fractures is reported. The median patient age was 80 years, and 71% were women The compression hip screw operation took less time except in Evans Type 5 fractures. Blood loss generally was less in the compression hip screw group except in patients with Type 5 fractures. The most frequent surgical problem for patients in the Gamma group was problems with distal locking. Cephalic position of the femoral head screw and cut-out were seen more often in the Gamma nail group. The Gamma nail more frequently preserved the fracture position obtained perioperatively. Whether there was distal locking of the Gamma nail in unstable fractures did not seem to affect the healing rate. Additional fissures or fractures in the proximal femur occurred during five Gamma nail operations and two compression hip screw operations. Postoperative walking ability did not differ between the groups. At 6 months 88% of the fractures were healed. In less comminuted fractures, the compression hip screw method is the preferred method of treatment whereas the Gamma nail is an alternative treatment for more comminuted Evans Type 5 fractures.


American Journal of Sports Medicine | 1990

Stress fractures of the femoral neck in athletes The consequence of a delay in diagnosis

Christer Johansson; Ingrid Ekenman; Hans Törnkvist; Ejnar Eriksson

Twenty-three patients with stress fractures of the fem oral neck were followed up at an average of 6.5 years after the injury. There were 16 recreational athletes and seven elite athletes. Most injuries (N = 15) occurred during running. The diagnosis was confirmed within 3 to 104 weeks (mean, 14 weeks) after the initial onset of symptoms. Sixteen of the patients were treated with internal fixation, the remaining seven were treated con servatively. Seven patients (30%) developed complica tions requiring major surgery. Five of these patients had Type 3 fractures (displaced) and four had been treated with internal fixation initially. The remaining two patients had Type 1 fractures (endosteal or periosteal callus without an overt fracture line); one was treated operatively and the other conservatively. Three patients developed avascular necrosis and two were treated by hip replacement. The third patient was treated with arthrodesis. Three refractures and one pseudarthrosis were treated by osteotomy. At followup, all elite athletes stated that they had to end their career as a result of the injury. Results were rated by the ability of the athlete to return to sports. There were 9 bad or fair results, 13 good, and 1 excellent result. No difference in activity level or subjec tive rating was observed between the surgically and conservatively treated group either preinjury or postin jury. The most important factor influencing the compli cation rate seems to be the type of fracture. The high incidence of displaced fractures (Type 3) could specu latively be caused by undiagnosed tension side stress fractures. If so, the delay in correct diagnosis may be disastrous. However, we could only objectively observe this in one of our cases.


Quality of Life Research | 2002

Femoral neck fractures in the elderly: functional outcome and quality of life according to EuroQol.

Jan Tidermark; Niklas Zethraeus; Olle Svensson; Hans Törnkvist; Sari Ponzer

The main purpose of this prospective study was to investigate the functional outcome and health-related quality of life according to EuroQol (EQ-5D) after a femoral neck fracture treated with internal fixation in relatively healthy elderly patients. We also aimed to validate the use of the EQ-5D in routine clinical follow-ups of this group of patients. The inclusion criteria were more than 65 years of age, absence of severe cognitive dysfunction, living independently, and unhindered walking ability preoperatively. The mean follow-up period was 17 months. The rated prefracture EQ-5Dindex scores showed good correspondence with the scores of an age-matched Swedish reference population. The EQ-5Dindex scores decreased from 0.78 before the fracture (based on recall) to 0.59 at 4 months and 0.51 at 17 months after surgery. The decrease was significantly larger among patients with fracture healing complications. There was a good correlation between the EQ-5Dindex scores and other outcome measures such as pain, mobility, independence in ADL and independent living status. The questionnaire response rate (EQ-5D) was 89–100% on different follow-up occasions. The EQ-5D appears to be an easy-to-use instrument even for elderly patients with femoral neck fractures. Changes in the quality of life may be useful to identify patients who might benefit from reoperation, i.e. arthroplasty. The EQ-5D also appears to be a relevant clinical end-point in outcome studies.


American Journal of Sports Medicine | 1990

Does a major knee injury definitely sideline an elite soccer player

Björn Engström; Magnus Forssblad; Christer Johansson; Hans Törnkvist

Injuries occurring in three Swedish elite soccer teams were analyzed during 1 year. A total of 49 of 64 players (75%) sustained 85 injuries. The incidence of injury during games was 13 injuries per 1000 hours, while the incidence during training was 3 injuries per 1000 hours. Twenty percent of the injuries required hospital facili ties. The majority of the traumatic injuries (93%) were to the lower extremities, with one third of the total injuries occurring in the knee. Overuse injuries ac counted for 35% of all injuries and occurred mainly during preseason training and at the end of each sea son. Conversely, the majority of traumatic injuries oc curred during games, equally distributed between the first and second halves with a predominance toward the end of each half. The position of the player within the team did not influence injury rate. The referee considered 28% of the traumatic injuries to be caused by violation of existing rules. Thirty-four percent of the injuries were major, causing more than 1 month of absence from training and/or games. Eleven knee in juries required surgical intervention revealing seven rup tured ACLs, of which three were chronic. At followup, 9 to 18.5 months after injury, 4 of 12 players with major knee injuries had returned to play at the elite level. The others had either been transferred to lower divisions or were still in rehabilitation.

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