Publications by authors named "Rostgard-Christensen L"

Background: Biocomposite screws reportedly provide equivalent graft fixation in anterior cruciate ligament reconstruction (ACLR) to metallic screws while simplifying subsequent imaging and surgery. One purported complication of biocomposite screws is paradoxical tunnel widening. Previous studies on beta-tricalcium phosphate screws have only reported outcomes at short- and midterm follow-up.

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Background: The anatomic double-bundle (DB) technique is purported to be a superior technique due to its mimicking of the double-stranded anatomic formation of the anterior cruciate ligament (ACL). Previous studies with 2-, 5- and 10-year follow-up are conflicted as to whether this technique is superior to the previous gold standard method of ACL reconstruction, the anatomic single-bundle (SB) reconstruction.

Purpose/hypothesis: The aim of this prospective randomized study was to compare the outcomes of the anatomic DB technique and anatomic SB technique with independent drilling at 10 years after anterior cruciate ligament (ACL) reconstruction.

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Background: Studies have demonstrated the development of an osseous reaction at the drill sites of anchors after arthroscopic shoulder surgery.

Purpose: To investigate the drill-hole size at 18 years after arthroscopic Bankart repair using either fast polygluconate acid (PGA) or slow polylevolactic acid (PLLA) absorbable tacks and to compare the functional outcomes and development of osteoarthritis.

Study Design: Randomized controlled trial; Level of evidence, 2.

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Background: The long-term outcome after the treatment of subacromial impingement syndrome (SAIS) with either nonsurgical or surgical methods has not been thoroughly investigated. Hypothesis/Purpose: The purpose was to evaluate the long-term clinical outcome and the presence of rotator cuff injuries and osteoarthritis (OA) after the surgical and nonsurgical treatment of SAIS. The hypothesis was that, at a minimum 10 years after the initial treatment, patients who had undergone acromioplasty would have a better clinical outcome and run a lower risk of developing rotator cuff ruptures and OA as compared with those treated with physical therapy.

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Purpose: To compare long-term clinical and radiographic outcomes in patients undergoing either early (group A) or late (group B) surgery after anterior cruciate ligament (ACL) injury.

Methods: ACL reconstruction using hamstring tendon autografts was performed in 30 patients in group A (median age, 23 years; range, 17-49 years) and 31 patients in group B (median age, 27 years; range, 17-38 years). The patients in group A were operated on within 5 months (median, 3 months; range, 2-5 months) of injury, whereas those in group B were operated on more than 24 months (median, 30 months; range, 24-48 months) after injury.

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Purpose: To radiographically assess the tibial tunnel up to 5 years after anterior cruciate ligament (ACL) reconstruction using hamstring tendon autografts and biocomposite interference screws.

Methods: Fifty-one patients underwent anatomic single-bundle ACL reconstruction with metal interference screws in the femur and biocomposite interference screws in the tibia. Standardized digital radiographs with weight-bearing anteroposterior and lateral views of the index knee were taken in the early postoperative period and at 2 and 5 years postoperatively.

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Background: There is no consensus in the current literature on which surgical options render the best long-term results after anterior cruciate ligament (ACL) reconstruction in terms of clinical outcomes and the development of radiographic osteoarthritis (OA).

Purpose: To investigate the long-term clinical and radiographic results after ACL reconstruction using either a patellar tendon (PT) autograft or a hamstring tendon (HT) autograft.

Study Design: Randomized controlled trial; Level of evidence, 2.

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Background: The aim of this prospective randomized study was to compare the outcomes of the anatomic double-bundle (DB) and anatomic single-bundle (SB) techniques 5 years after anterior cruciate ligament (ACL) reconstruction. Since more effective restoration of rotational laxity is considered the main advantage of the DB technique, the pivot-shift test was the primary outcome variable of the study.

Hypothesis: Double-bundle ACL reconstruction will result in a better outcome in terms of the pivot-shift test.

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Background: Patients who sustain an acute anterior cruciate ligament (ACL) rupture are at increased risk to develop posttraumatic arthritis (PTA) in the injured knee whether the ACL is reconstructed or treated nonoperatively. Inflammatory cytokines and cartilage degradation biomarkers are elevated at the time of acute injury and postoperatively. This suggests that one mechanism for PTA may be an inflammatory degradative process initiated on the acute injury and sustained for some length of time independent of whether adequate joint stability is restored.

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Background: The risk of further intra-articular damage associated with nonoperative or delayed anterior cruciate ligament (ACL) reconstruction must be considered against the risk of growth disturbance with early reconstruction and transphyseal drilling. Long-term follow-ups after the surgical treatment of ACL injuries in adolescents are rare.

Purpose: To evaluate results 10 to 20 years after ACL reconstruction in terms of the radiographic presence of osteoarthritis, clinical assessments, and health-related quality of life in patients who were adolescents at the time of surgery.

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Background: Semitendinosus (ST) and/or gracilis (G) autografts are the most used grafts for anterior cruciate ligament (ACL) surgery. The tendons have been shown to be able to regenerate but with focal areas of scar tissue in the short term. There are no long-term histological studies of the regenerated tendons.

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Background: During the past decade, the use of biodegradable implants in anterior cruciate ligament surgery has increased.

Hypothesis: Poly-L-lactide acid (PLLA) interference screws would render the same clinical results but greater tunnel enlargement than metal screws 8 years after anterior cruciate ligament reconstruction using hamstring tendon (semitendinosus/gracilis) autografts.

Study Design: Randomized controlled trial; Level of evidence, 1.

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Background: Recent studies have shown that techniques for arthroscopic Bankart reconstruction using suture anchors or tacks can equal the results after an open procedure in the treatment of posttraumatic, recurrent, unidirectional shoulder instability. Which kind of technique and which implants to be used still need further study.

Purpose: The aim of this study was to compare the clinical and radiographic results after arthroscopic Bankart reconstruction using 2 different types of absorbable implants.

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Purpose: This study was undertaken to evaluate the long-term radiographic appearance and clinical outcome after anterior cruciate ligament (ACL) reconstruction by use of either bone-patellar tendon-bone (BPTB) or hamstring tendon (HT) autografts and to evaluate how associated meniscal injuries affect the prevalence of osteoarthritis (OA).

Methods: ACL reconstruction was performed in 124 consecutive patients. Of these patients, 113 (91%) (72 BPTB and 41 HT) returned for a follow-up examination at a median of 86 months (range, 67 to 111 months) after reconstruction.

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Background: Clinically, donor site problems are common, even in the long term after anterior cruciate ligament reconstruction using patellar tendon autograft. However, there is a lack of knowledge in terms of the mid- and long-term ultrastructural appearance of the previously harvested tendon in humans.

Hypothesis: The patellar tendon does not regain normal ultrastructure 6 years after harvesting its central third and leaving the defect open.

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Purpose: The aim of the study was to compare the clinical and radiographic results after arthroscopic Bankart reconstruction using 2 different types of absorbable implant.

Type Of Study: Randomized controlled trial.

Methods: A randomized series of 40 patients who had recurrent, unidirectional, post-traumatic shoulder instability were included in the study.

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Purpose: Clinical and ultrasound evaluation of patients who had undergone debridement of a partial rotator cuff tear in conjunction with an arthroscopic acromioplasty.

Type Of Study: Retrospective follow-up study.

Methods: Thirty-three consecutive patients were included in the study; 26 of the 33 (79%) patients underwent ultrasound evaluation of both shoulders and were examined by independent observers after a follow-up period of 101 months (range, 60 to 128 months; minimum, 5 years).

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This study compared the reliability (interchangeability) of magnetic resonance imaging (MRI) and ultrasonography (US) examinations of the patellar tendon after using central third patellar tendon autografts during anterior cruciate ligament reconstruction. Nineteen consecutive patients (7 women, 12 men) underwent bilateral MRI and US of the patellar tendons 27 (24-29) months after anterior cruciate ligament reconstruction using ipsilateral central third patellar tendon autografts. Two experienced radiologists blinded to one another evaluated the examinations.

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