Today, aseptic loosening is the most common cause of revision of major arthroplasties. Aseptic loosening accounts for more than two-thirds of hip revisions and almost one-half of knee revisions in Sweden. Several theories on the cause of aseptic loosening have been proposed. Most of these theories, however, are based on ...

Sternoclavicular joint subluxation/dislocation injuries in the athlete are uncommon. They can be organised by degree (subluxation, dislocation), timing (acute, chronic, recurrent, congenital), direction (anterior, posterior), and cause (traumatic, atraumatic). The unusual case reported is an adolescent butterfly swimmer with recurrent bilateral sternoclavicular subluxation associated with pain and discomfort. The condition ...

Isolated posterior dislocation of the shoulder with ipsilateral humeral shaft fracture is a rare combination. Three cases of such co-existence have been reported so far. We report a fourth case and review the literature. Our aim is to highlight the importance of this rare co-existence. A high index of suspicion ...

Information reviewed and reaffirmed March 1956

This report describes the rare case of a traumatic rotator cuff tear in a young patient which led to a pseudo-paralyzed shoulder by interposition of the tendon stump into the glenohumeral joint. The patient underwent an open rotator cuff repair and regained an almost normal shoulder function after 12 weeks. ...

Selected kinematic variables of the foot segments and the metatarsophalangeal (MTP) joint were investigated in relation to sprinting performance among 100 m sprint athletes at the 2000 Summer Olympic Games. It was hypothesized that the kinematics of the MTP joint, and forefoot and rearfoot segments, are related to sprint performance ...

We report 11 cases of interprosthetic dislocation of the Charnley/Hastings hemiarthroplasty in a retrospective study of 350 consecutive patients treated for an acute femoral neck fracture. We found a total of 14 dislocations (4.0%), 11 were interprosthetic. The median age of the 350 patients was 79 (36-99) years and the ...

Synovial chondromatosis is a rare, generally benign condition characterized by the formation of multiple cartilaginous nodules in the synovium of joints and occasionally on the tendon sheath or bursae. If the nodules are intra-articular, the condition is referred to as synovial chondromatosis; if extra-articular, tenosynovial chondromatosis. This space-occupying lesion can ...

A case of deformity and shortening after post-traumatic growth arrest treated using the Taylor Spatial Frame (Smith & Nephew, Tennessee, USA) is presented. This is the first report showing the application of the frame for post-traumatic deformity in the distal femur, and successful outcomes promise utilization of the frame even ...

Osteosarcoma of the hand is rare. We present a case report and a literature review that indicates an older median age of onset than conventional osteosarcoma. The predilection for these lesions to manifest in the metacarpophalangeal joints, particularly in the second and third digits, is in contrast to the more ...

Among the traumatic patellar dislocations, superior dislocation of patella without patellar ligament injury is very rare. We present in this article, a case of superior dislocation of the patella trapped by interlocked osteophytes in a 38-year-old female who had concurrent bilateral knee arthrosis. Successful reduction was achieved by closed manipulation ...

A case is being presented of simultaneous bilateral cervico-trochanteric fractures of the neck of the femur in a five and a half-year-old girl following a road traffic accident (RTA). It is being presented because of its rarity; literature search to date revealing no previously reported similar case. The patient was ...

We describe Tn5386, a novel ca.-29-kb Tn916-like mobile element discovered to occur in ampicillin-resistant, Tn916-containing Enterococcus faecium D344R. PCR amplification experiments after overnight growth with or without tetracycline revealed "joint" regions of circularized Tn5386 composed of 6-bp sequences linking different transposon termini. In one case (no tetracycline), the termini were ...

We report a case of a patient with an infected shoulder hemiarthroplasty in whom a permanent antibiotic-impregnated cement spacer was employed with satisfactory results. This method of treatment has limited applications and would not be appropriate in all cases of septic shoulder joint arthroplasties. However, its use may represent a ...

Traumatic hip dislocation in the paediatric population is a relatively rare occurrence and constitutes an orthopaedic emergency. A trivial force is all that is required and non-accidental injury should not be necessarily suspected. A case report involving a hip dislocation in a 21-month-old child, the youngest in the recent English ...

Dislocations of sternal segments in children are extremely rare lesions; only seven sterno-manubrial dislocations have been reported in the literature. We present a case of posterior sterno-manubrial dislocation in a 9-year old gymnast exercising on parallel bars. We preferred performing an open reduction and plate stabilization using an angular stable ...

Brachial plexus injury is a rare complication of anterior dislocation of the shoulder: nine cases have been reported in the literature. We report a unique case of anterior dislocation of the shoulder with associated brachial plexus palsy involving the posterior and medial cords. This is the first reported case of ...

Congenital dislocation of the patella may be a phenotype, which has several genotypes, i.e. it may be congenital or acquired. This hypothesis is suggested with three illustrative case studies. Risk factors predictive of the development of irreducible dislocation of the patella in infancy are suggested. As there is a spectrum ...

STUDY DESIGN: A case of a child with a traumatic atlanto-occipital dislocation (AOD), with unexpected secondary redislocation in a halo vest is presented. An extensive literature review was performed. OBJECTIVES: To show the difficulties in diagnosing AOD, to emphasize its intrinsic instability, and to make recommendations for treatment of this ...

Pigmented villonodular synovitis (PVNS) is a relatively rare disease, affecting the synovial-lined joints. PVNS was first fully described by Jaffè in 1941, who considered it to be a benign inflammatory state of the synovium of an uncertain etiology. Reports of this disease in the temporomandibular joint (TMJ) are extremely rare. ...

OBJECTIVE: To determine the prevalence and associated clinical symptoms of pes anserine bursitis in symptomatic adult knees. MATERIALS AND METHODS: A retrospective review was performed of the reports of 509 knee MRI studies obtained from July 1998 to June 2004 on 488 patients presenting to an orthopaedic clinic with knee ...

This case report describes a teenage female, high-level modern dancer who suffered multiple left patellar dislocations. Her history is atypical in that after her fifth dislocation, her recovery was hindered secondary to persistent weakness and atrophy of her quadriceps out of proportion to disuse alone. Electrodiagnostic studies and magnetic resonance ...

Plicae are synovial folds, classified according to their anatomical relationship to the patella. The medial patellar plica is normally asymptomatic, but it may cause symptoms when it becomes thickened and fibrotic. We describe three cases of bucket-handle tear of the medial patellar plica. They all suffered from anterior knee pain ...

Bifid condyle is a rare condition. Most initially reported cases were found in studies conducted on skeletal specimens. While increasing numbers are being reported on living persons, most of them are asymptomatic and have been found on routine dental radiographic examination for other dental complaints. Most of the cases of ...

Superior dislocation of the patella is a rare diagnosis, which usually occurs after a trivial trauma. It usually requires manipulation with analgesics or may even need anaesthesia. We report a case of spontaneous reduction of the dislocation, which lead us to believe that this may be more common in the ...

We report here an unusual case of medial meniscal hematoma of the knee joint. A review of the literature has revealed only one case that was previously reported. The authors present the successful decompression of the posterior horn of a medial meniscal hematoma through the direct posterior-posterior triangulation arthroscopic visualization ...

Traumatic posterior dislocation of the sternoclavicular joint is an uncommon injury in children. It is not normally well seen on plain films. We report 2 cases where spiral computed tomography with intravenous contrast confirmed the clinical suspicion of sternoclavicular joint dislocation and also allowed assessment of the adjacent mediastinum for ...

Synovial chondromatosis of the wrist is rare. We report the case of a 35-year-old man with synovial chondromatosis of the left wrist with an 8-year follow-up. Frequent recurrences finally resulted in total wrist arthrodesis. A review of the literature produced 24 case reports of synovial chondromatosis of the wrist with ...

BACKGROUND: The authors review the literature regarding osteocartilaginous loose bodies (that is, secondary synovial chondrometaplasia or secondary synovial chondromatosis) in the temporomandibular joint (TMJ), present a case report and stress the importance of early diagnosis. CASE DESCRIPTION: A 57-year-old woman was referred to an orthodontist with a chief complaint of ...

Pseudogout is a rare joint disease which is characterized by the presence of calcium pyrophosphate dihydrate crystals in the intraarticular and periarticular tissue. The crystals tend to attach to fibrocartilage tissue. Pseudogout principally affects the knee and wrist joints. Involvement of the temporomandibular joint (TMJ) is very rare. There have ...

Neuropathic arthropathy is a destructive joint disease associated frequently with loss of proprioception. Syringomyelia (with or without Arnold-Chiari malformation) is characterized by slow progression over many years; the joints involved most frequently are the shoulders and elbows. Neuropathic arthropathy of the hand is rare, and clinical features are vasomotor problems, ...

Restriction of the mouth opening from a pathologic condition outside the temporomandibular joint is called a pseudo- or extra-articular ankylosis. The authors report two cases of severe post-traumatic pseudoankylosis. One case showed fibrous degeneration of the bilateral masseter muscles without a facial bone fracture, which caused severe trismus, a mouth ...

Primary intra-articular synovial chondromatosis represents an uncommon condition involving mainly the large joints predominantly of middle-aged adults. We herein document the first case of synovial chondromatosis affecting the acromio-clavicular joint of a 10-year-old girl, characterized by a solitary huge intra-articular osteochondromatous body (giant synovial chondromatosis) that had caused dislocation and ...

Pigmented villonodular synovitis (PVNS) is a rare, benign, idiopathic proliferative disorder of the synovium that results in villous or nodular formation in joints, tendon sheaths, and bursae. The disease can be localized or diffuse. Its estimated prevalence is 1.8 cases per million in the United States. Large joints, such as ...

We report a rare case of irreducible chronic palmar dislocation of the distal radioulnar joint (DRUJ). This case showed that the dislocated ulnar head was impacted to the palmar cortex of the radius probably due to the dynamic force of the pronator quadratus muscle. Re-attachment of the ulnar styloid and ...

Anterior subtalar dislocations are extremely rare. To our knowledge, six cases have been reported in detail in the literature, but for only two of these was an anteroposterior view radiograph used to confirm the diagnosis. We report a case of anterior subtalar dislocation in which the posterior tibialis tendon was ...

Malignant (invasive) otitis externa (MOE) is an infection involving the external auditory meatus (EAM), most often found in elderly diabetics, which carries a high morbidity and mortality. In advanced cases it may give rise to osteomyelitis and cranial neuropathies. This is a case ofMOE, which invaded the posterior wall of ...

A 30-year-old amateur goalkeeper sustained simultaneous dislocation of the proximal and distal interphalangeal joints of the ring finger and of the proximal interphalangeal joint of the middle finger following a hyperextension injury. This was reduced under a local anaesthetic. Neighbour finger strapping and early mobilisation achieved an excellent functional outcome ...

Constrained acetabular components have been used to treat certain cases of intraoperative instability and postoperative dislocation after total hip arthroplasty. We report our experience with a tripolar constrained component used in these situations since 1988. The outcomes of the cases where this component was used were analyzed for component failure, ...

We report a case of septic arthritis of multiple joints in an 18-year-old male caused by Aspergillus fumigatus. His initial presentation was of low-grade fever followed by involvement of both knee and ankle joints. Later, there was also involvement of metacarpophalangeal joints. Diagnosis was based on biopsy and culture of ...

This report describes a 22-yr-old professional golfer with acute calcific periarthritis of the proximal interphalangeal joint of the 4th finger. We considered that the major cause for this condition may be the repeated minor traumas to the affected site. Also, since this condition is self-limiting, a correct diagnosis is required ...

The superior dislocation of the patella with interlocking osteophytes is a rare condition. A review of the English literature revealed only 12 reported cases. The purpose of reviewing these case reports is to highlight the unusual presentation and the injury mechanism in 2 of our patients, and to present our ...

Hand and foot deformities were originally described in Parkinson's disease (PD) in 1864, although their pathogenesis still remains to be clarified. Typical hand deformities are flexion in metacarpopharyngeal joints and hyperextension in interphalangial joints, sometimes accompanied by ulnar deviation. Unlike rheumatoid arthritis (RA), there is no swelling and stiffness in ...

We report two cases of mucoid degeneration of the anterior cruciate ligament (ACL). Mucoid degeneration of the ACL is a very rare cause of knee pain. There have been only seven reported cases of mucoid degeneration of the ACL in the English literature. We reviewed previous reports and summarized clinical ...

The decision of whether to resurface the patella during total knee arthroplasty remains controversial. In this study, a meta-analysis of national joint replacement registry data, bilateral total knee replacement studies, selective resurfacing reports, and randomized clinical trials was done Although the evidence seems to support patellar resurfacing, this issue remains ...

We present a case of an immunocompromised host who developed a Candida glabrata infection 20 years after her total knee arthroplasty. She was treated with extensive irrigation and debridement, followed by placement of an amphotericin B cement spacer supplemented with 2 months of oral variconazole. She ultimately underwent an above-knee ...

Between December 1987 and January 2002, 25 cases of clinical instability following mobile-bearing total knee arthroplasty (TKA) with meniscal bearings or rotating platforms presented for evaluation at our institution. These cases were retrospectively identified. All were performed at outside institutions by a variety of surgeons. All clinical examinations were performed ...

Alumina-on-alumina bearings for total hip arthroplasty have been introduced as a promising alternative to reduce wear debris and to increase the life expectancy of the prosthesis. We report a case of a late dissociation of an alumina-on-alumina bearing modular acetabular component, which occurred 2 years, 8 months after surgery. Detailed ...

We report the dislocation of 6 liners out of the metal backing shells of Harris Galante II cementless total hip prostheses implanted between 1993 and 1996. The time between primary implantation and failure varied from 46 to 95 months. The dislocations were probably the result of suboptimal mechanical fixation of ...

A unique case of Oropharyngeal leiomyosarcoma in a 32 years old male is presented with the review of literature The details of clinical, radiological, histopathological and operative findings are discussed The treatment of choice is complete tumor removal The patient was symptom free with no evidence of loco regional or ...