Intra-articular zoledronic acid in a rat osteoarthritis model: significant reduced synovitis may indicate chondroprotective effect.

Purpose: The aim of this experimental study was to evaluate the effect of intra-articular application of zoledronic acid (ZA) on joint cartilage and synovial tissue following induction of knee osteoarthritis (OA) in a rat model.

Methods: An OA model was created by anterior cruciate ligament transection (ACLT) in the right knees of 48 adult Wistar albino rats. The rats were randomized into a study and control groups, each including 24 rats, and 10 μg of ZA was injected in 0.

Comparison of tunnel expansion and isometric muscle strength after ACL reconstruction with single- or dual-bundle hamstring allograft: a prospective, randomized study.

Objective: The aim of this study was to compare tunnel expansion and isokinetic muscle strength after single- and dual-bundle reconstruction of the anterior cruciate ligament (ACL).

Methods: This study included 34 patients who underwent ACL reconstruction in our clinic between November 2007 and March 2008. Eighteen patients (average age: 27.

[Unicondylar knee arthroplasty in medial unicompartmental osteoarthritis: technical faults and difficulties].

Objectives: The aim of this study is to evaluate both the technical problems of surgery and the clinical and radiologic outcomes of patients treated with unicondylar knee arthroplasty.

Patients And Methods: Forty-one unicondylar knee prosthesis were performed in 40 patients (3 males, 37 females; mean age 58.2 years; range 44 to 76 years) diagnosed with unicompartmental knee osteoarthritis.

Remodeling potentials of biphasic calcium phosphate granules in open wedge high tibial osteotomy.

Introduction: Biphasic calcium phosphate (BCP) has proved to be an effective bone substitute, but it's effectiveness and remodeling potential in open wedge high tibial osteotomy (OWHTO) has not been analyzed yet. This study sought to evaluate the bone healing and remodeling potentials of BCP granules using a radiographic rating system in biplanar OWHTO.

Materials And Methods: Fifteen patients (15 knees) underwent biplanar OWHTO.

[Early results of treatment of proximal humerus fractures with the PHILOS locking plate].

Objectives: The aim of this study was to evaluate early results of proximal humerus fractures treated with the PHILOS locking plate.

Methods: Proximal humerus fractures of 22 patients (13 males, 9 females; mean age 57 years; range 35 to 83 years) were treated with the PHILOS locking plate. According to the Neer classification, 13 patients had comminuted fractures, four patients had valgus impact injuries, two patients had fracture-dislocations, and three patients had fractures involving the proximal 1/3 of the humerus.

The correlation of correction magnitude and tibial slope changes following open wedge high tibial osteotomy.

We investigated whether there is a correlation between coronal plane correction magnitude and tibial slope in patients treated with medial open wedge high tibial osteotomy (OWHTO) and also measured changes in patellar height. Thirty-four knees treated with for varus deformities were retrospectively reviewed and the follow-up period of the patients was averaged 24.1 months.

Radial tears in the root of the posterior horn of the medial meniscus.

The purpose of this study is to define the clinical features and characteristics of radial tears in the root of the posterior horn of the medial meniscus and to report the outcome of arthroscopic treatment. Arthroscopic meniscus surgery was performed on 7,148 knees. Of those, 722 (10.

Combined ulnar and carpal tunnel syndrome caused by pigmented villo-nodular tenosynovitis: a rare case.

Pigmented villo-nodular synovitis/tenosynovitis (PVNS) is a rare cause of combined ulnar and median nerve compression neuropathy at the wrist. In our case, a 53-year-old house-wife had sensorial and motor complaints at her left hand. In clinical examination, painless soft tissue mass was palpated at her wrist and both the tenar and hypotenar muscles were atrophic.

Necrotizing soft-tissue infection of a limb: clinical presentation and factors related to mortality.

Background: Necrotizing fasciitis is a rare and often fatal soft-tissue infection. Prompt diagnosis and immediate aggressive surgical debridement of all compromised tissues are critical to reducing morbidity and mortality in these rapidly progressive infections. The purpose of this study was to analyze the clinical presentation and evaluate factors that determine mortality associated with this uncommon surgical emergency.

Arthroscopic debridement and grafting of an intraosseous talar ganglion.

We report the case of a 41-year-old man with right ankle pain and swelling who had an intraosseous talar ganglion in the medial part of talar dome. A surgical procedure was performed using the 3-portal arthroscopic approach. The softened chondral surface was removed and the content of the cyst was discharged arthroscopically.

Giant chondroblastoma of the scapula with pulmonary metastases.

A 53-year-old man presented with a 12-year history of a progressively growing solid mass at his left shoulder. A 39x30x18-cm and 14.440-kg mass including the scapula was resected.

[Thermal assisted arthroscopic stabilization of unstable shoulder].

The use of nonablative thermal energy to shrink soft-tissue collagen results in ultrastructural and mechanical changes at temperatures 60 degrees C or above. Due to this effect, the fibrils undergo shortening and shrinkage. Arthroscopic thermal capsulorrhaphy has been used in the treatment of shoulder instabilities and posterior impingement syndrome; in particular, the presence of a Bankart lesion or a superior labral anterior posterior lesion requires a labral or capsulolabral repair.

Hallucal sesamoid osteonecrosis: an overlooked cause of forefoot pain.

Four cases of osteonecrosis of hallucal sesamoids are reported here. Surgical excision of necrotic sesamoid tissue yielded satisfactory results, with the patients reporting no residual pain. Although it has not been frequently addressed in the literature, avascular necrosis of the sesamoid bones should be considered in the differential diagnosis of persistent forefoot pain.

Time dependent changes in patellar tracking with medial parapatellar and midvastus approaches.

The aim of this study was to compare the alteration of patellar tracking by time, which was performed through two different approaches: midvastus and medial parapatellar. Twenty-one patients undergoing simultaneous bilateral primary total knee replacements were randomized prospectively to perform the surgery via a medial parapatellar approach on one knee and midvastus approach on the other knee. All of the patellae were resurfaced.

Arthroscopic treatment of solitary benign intra-articular lesions of the knee that cause mechanical symptoms.

Purpose: Most cases of knee locking and giving-way are caused by meniscal tears, loose bodies, or chondral lesions. Intra-articular benign tumors or tumor-like lesions can present with symptoms that resemble acute mechanical derangement. From a database of 2,200 arthroscopic interventions, 19 cases of intra-articular masses that presented with catching and locking symptoms in the knee were retrospectively analyzed.

[A comparison between single- and two-staged bilateral total knee arthroplasty operations in terms of the amount of blood loss and transfusion, perioperative complications, hospital stay, and cost-effectiveness].

Objectives: We compared bilateral total knee arthroplasty (TKA) operations performed at a single session or at two separate sessions with respect to perioperative complications, the amount of blood loss and transfusion, the length of hospital stay, and the overall cost.

Methods: The study included 39 patients (34 females, 5 males; mean age 68.1 years; range 52 to 88 years) and 16 patients (13 females, 3 males; mean age 66.

Primary clear cell sarcoma of rib.

Clear cell sarcoma (malignant melanoma of soft tissues) is a very rare soft tissue neoplasm. It generally arises in tendons and aponeuroses. Although metastasis of malignant melanoma to bone is not uncommon, primary clear cell sarcoma of bone is an extremely rare neoplasm.

Iatrogenic medial dislocation of hallucal sesamoids with hallux varus in an adolescent.

Background: Iatrogenic hallux varus is a rare deformity linked to bunion surgery at late adult age. Here reported is the first adolescent case of acquired hallux varus and medial dislocation of both sesamoid bones.

Case Report: The patient had had a surgical intervention under his first metatarsophalangeal joint when he was 10 years old.

Hydatid disease with atypical localization: 4 cases report.

Hydatid disease caused by Echinococcus often manifests as slowly growing cystic mass and mainly affects the liver or lung and rarely other parts of the body such as brain, heart, bone and muscle. Cyst may be single or multiple, uni-or multiloculated. In this paper 4 hydatic cases, multiple and atypically localized are presented.

Displaced supracondylar humeral fractures in children: open reduction vs. closed reduction and pinning.

Introduction: In the literature the best results for pediatric supracondylar humerus fractures have been achieved by closed reduction and wire fixation. However, in these reports the patient group of open reduction and pinning contained the patients who had had previous ineffective closed reduction trials. This retrospective study compared open and closed reduction with pinning, in which the first group of patients was all consecutively treated with open reduction.

Tunnel enlargement after arthroscopic anterior cruciate ligament reconstruction: comparison of bone-patellar tendon-bone and hamstring autografts.

Bone tunnel enlargement associated with anterior cruciate ligament (ACL) reconstruction has recently become a topic of interest in the literature. This association was examined, along with the effect of femoral and tibial tunnel enlargement on the clinical results of ACL reconstruction performed with either bone-patellar tendon-bone (BPTB) or hamstring (HST) autografts. Forty-six patients underwent arthroscopic ACL reconstruction (23 receiving BPTB autograft and 23 HST) between March 1999 and July 2001.

Synovial cysts of proximal tibiofibular joint causing peroneal nerve palsy: report of three cases and review of the literature.

Introduction: Synovial cyst of the proximal tibiofibular joint is a very rare condition, for which there is no consensus regarding treatment.

Case Presentation: We present three patients who had synovial cysts of proximal tibiofibular joint that caused peroneal nerve palsy. We discuss the special features of synovial cysts and review the literature.

The timing of tourniquet release and its influence on blood loss after total knee arthroplasty.

We performed a prospective, randomized study on 76 patients (82 knees) scheduled for total knee arthroplasty to determine the effect of tourniquet release and hemostasis on the peri- and postoperative blood loss. Patients were randomly divided in two groups. Posterior cruciate retaining tricompartmental total knee prostheses were used in all.

[Anatomy, biomechanics, and physiopathology of the rotator cuff].

Rotator cuff disease is the most common cause of shoulder pain and dysfunction in adults. Despite the significant amount of pain and disability related to rotator cuff pathology, there is insufficient information to guide the clinician in planning therapeutic interventions. In this article, we reviewed the anatomy, biomechanics, and pathophysiology of the rotator cuff in an attempt to cover recent literature thereof.