Survivorship, complications and patient-reported outcomes in calcar-guided short-stem THA: prospective mid-term multicenter data of the first 879 hips.

Introduction: Short stems are a bone and soft-tissue preserving alternative to conventional stems. The aim of this multicenter study is to present the mid-term outcomes of a calcar-guided short stem.

Materials And Methods: This is a prospective case series of the first 879 total hip arthroplasties performed on 782 patients across 5 centers using identical calcar-guided short stems.

Three-dimensional acetabular orientation during periacetabular osteotomy: a video analysis of acetabular rim position using an external fixator as navigation tool during reorientation procedure.

Introduction: Bernese periacetabular osteotomy is an effective procedure for treating acetabular dysplasia. However, limited visual control of the acetabular position during surgery may result in under- or overcorrection with residual dysplasia or femoroacetabular impingement. Thus, we wanted to find a simple method to control the effect of correction in the sagittal and coronal plane.

Assessment of pelvic tilt in anteroposterior radiographs by means of tilt ratios.

Introduction: In anteposterior (AP) radiographs, cup position in total hip arthroplasty and acetabular anatomy in hip-preserving surgery are highly influenced by pelvic tilt. The sagittal rotation of the anterior pelvic plane is an important measurement of pelvic tilt during hip surgery. Thus, correct evaluation of cup position and acetabular parameters requires the assessment of pelvic tilt in AP radiographs.

[Giant cell reparative granuloma of the metacarpal bone : Diagnostic difficulties].

Giant cell reparative granuloma (GCRG) is benign, non-tumorous granulation tissue. It mainly arises in the jaw bone and occasionally in the hand and foot. Because of the high rate of recurrence, wide surgical resection and autologous bone grafting are recommended.

[Examination of the wrist and hand].

The wrist and hand form a highly complex organ that is of great importance in almost all daily activities. The hand serves as a tool and an organ of sense. Injuries of the hand and wrist as well as mechanical, neurological or systemic inflammatory changes are common.

[Examination of the wrist and hand].

The wrist and hand form a highly complex organ that is of great importance in almost all daily activities. The hand serves as a tool and an organ of sense. Injuries of the hand and wrist as well as mechanical, neurological or systemic inflammatory changes are common.

[Operative therapy for rheumatoid arthritis of the hand].

The need for operative treatment of severe rheumatic deformities of the hand and wrist is decreasing due to the increased use of disease-modifying drugs; however, some patients do not tolerate or do not sufficiently respond to these drugs, which often results in the hands being affected and in advanced stages to severe deformity and loss of function. In these cases operative surgery can help to slow the progression of rheumatic destruction and restore the function of the patient's hand. This article describes the principles of surgery for rheumatoid arthritis of the hand.

[Operative treatment of the rheumatic shoulder].

The duration and severity of rheumatic diseases of the shoulder correlate with symptom frequency, structural changes and associated functional limitations. The multifactorial character of the underlying rheumatic disease requires a multimodal therapeutic concept including interaction of surgical and non-surgical disciplines. In addition to basic systemic anti-inflammatory medication, injections targeting the synovial tissue by corticoid instillation and glenohumeral radiosynoviorthesis (with an intact rotator cuff) are further options.

Current therapeutic strategies of heterotopic ossification--a survey amongst orthopaedic and trauma departments in Germany.

Background: Heterotopic ossification (HO) is a complication after tissue trauma, fracture and surgery (i.e. total hip arthroplasty).

The impact of hypoxia on mesenchymal progenitor cells of human skeletal tissue in the pathogenesis of heterotopic ossification.

Purpose: Mesenchymal progenitor cells (MPCs) are capable of differentiating into osteo/chondrogenic cells to contribute substantially to heterotopic ossification (HO). This study aimed to examine the impact of hypoxia on MPCs in the aetiology of HO.

Methods: MPCs from human normal and HO skeletal tissue were cultivated under normoxia and hypoxia.

[Wrist arthroscopy : challenging procedure of modern hand surgery].

Arthroscopy of the wrist has developed in the shadow of arthroscopy of the large joints. Nowadays, wrist arthroscopy has a relevant importance in the diagnostics and therapy in hand surgery and is indispensable for serious surgery of the wrist. Special equipment and extensive knowledge of the surgeon are necessary for carrying out the procedure.

[Operative joint-preserving therapy of gonarthrosis].

The guiding principle of operative joint-preserving therapy of gonarthrosis is the search for a safe, minimally invasive, efficient and ultimately reasonably priced therapeutic procedure to preserve or restore joint integrity. A comprehensive analysis and treatment of pathologies adjacent to and distant (axis deviations) from the joint are prerequisites for success of treatment. A comparison of results from the current literature with respect to the operative treatment of arthritis is limited due to the divergence of indications, terminologies used, techniques of the therapeutic procedure, inhomogeneity of patient collectives and the different follow-up and control schemes (scores).

Development and evaluation of an image-free computer-assisted impingement detection technique for total hip arthroplasty.

Periprosthetic or bony impingement in total hip arthroplasty (THA) has been correlated to dislocation, increased wear, reduced postoperative functionality with pain and/or decreased range of motion (ROM). We sought to study the accuracy and assess the reliability of measuring bony and periprosthetic impingement on a virtual bone model prior to the implantation of the acetabular cup with the help of image-free navigation technology in an experimental cadaver study. Impingement-free ROM measurements were recorded during minimally invasive, computer-assisted THA on 14 hips of 7 cadaveric donors.

Gait analysis after tibialis anterior tendon rupture repair using Z-plasty.

Other than limited reports regarding surgical outcomes, little information is available regarding whether Z-plasty of the tibialis anterior results in normal gait kinematics. We included 5 patients with spontaneous ruptures in the present retrospective study. The mean interval between rupture and operative treatment was 2.

Proximal interphalangeal joint replacement with an unconstrained pyrocarbon prosthesis (Ascension(R)): a long-term follow-up.

There have been limited publications that report long-term outcomes of pyrocarbon implants. This report describes both clinical and radiographic long-term results for patients who have been treated with pyrocarbon proximal interphalangeal implants. Thirteen implants in ten patients are reported for an average follow-up of 8.

[Radiological findings, evaluation and treatment of patellofemoral pain after total knee arthroplasty].

Total knee arthroplasty (TKA) is one of the most successful operative procedures over the last decades in orthopedic surgery; however, some patients suffer from pain, limited range of motion, instability, infections or other complications postoperatively. Patellofemoral pain (PFP) in particular is a common problem after TKA and often necessitates revision surgery. Mainly increasing and localized contact pressure and patella maltracking are held responsible for PFP but the reasons vary.

Bisphosphonates or prostacyclin in the treatment of bone-marrow oedema syndrome of the knee and foot.

Bone-marrow oedema (BME) represents a reversible but mostly painful increase in interstitial fluid. The exact pathogenetic processes still remain unknown. Treatment options are mainly symptomatic with core decompression as golden standard leading to immediate pain relieve.

[The role of hyperlaxity in open stabilisation of post-traumatic shoulder instability].

Background: Chronic post-traumatic shoulder instabilities as well as post-traumatic shoulder instabilities in association with joint laxity are accepted reasons for open capsular shift and labral refixation. However, it remains unclear whether hyperlaxity influences clinical outcome and reluxation rates.

Material And Method: A total of 60 patients (48 men and 12 women) with diagnosed post-traumatic anterior glenohumeral instability were included in the study.

[Orthopedic operations and postoperative treatment of rheumatic elbows].

This article gives an overview of the indications for operative treatment and the respective post-treatment of rheumatic elbows. The goal should be to preserve the function of the elbow joint and freedom from symptoms to prevent joint destruction which unfortunately can still be seen nowadays.

[Postoperative treatment strategies after rheumatic orthopedic operations of the shoulder. A suggestion].

Although surgical treatment of rheumatoid patients is quite common for disorders of the shoulder, less is known about the efficacy of the postoperative regimens. Clear therapeutic standards are still missing; however, without systematic and intensive postoperative physical therapy, a good postoperative outcome cannot be achieved. This article shows our postoperative treatment regimens and describes our preferred techniques in physical therapy.

[Mid-term outcome after implantation of a pyrocarbon endoprosthesis in patients with degenerative arthritis].

Aim: The aim of this study was to make a mid-term evaluation of an unconstrained pyrocarbon prosthesis (Ascension®) in the treatment of idiopathic degenerative arthritis of the proximal interphalangeal joint of the hand.

Method: 13 implants (10 patients) were clinically and radiologically studied after a follow-up period of 71 months (range: 48-92 months).

Results: The average ROM was 52° (± 27°STD).

[Arthroplasty for rheumatic elbow joints].

Without proper treatment rheumatoid arthritis can lead to pain, instability and destruction of the elbow joint. As with artificial knee replacement various designs are available and in general non-constrained and semi-constrained designs are preferred. Fully constrained designs should be avoided due to high loosening rates.

[Littler tenodesis for correction of swan neck deformity in rheumatoid arthritis].

Purpose: The aim of this study was to assess the results of operative treatment for rheumatoid swan neck deformity using Littler's technique consisting in the reconstruction of the oblique retinacular ligament.

Patients And Method: From 2004 to 2007 twenty rheumatoid patients with 30 PIP-joints affected by swan neck deformity underwent surgical correction. In all cases the tenodesis described by Littler was used.

[Mid-term results after scaphoid excision and four-corner wrist arthrodesis using K-wires for advanced carpal collapse].

Aim: Successful four-corner fusion after scaphoid excision provides pain relief und preserves an acceptable movability of the wrist. However, this treatment option for advanced carpal collapse is not without complications, such as malunion, hardware impingement or incomplete correction of lunate extension. K-wires, staples, Herbert screws or, recently, locking plates are all possible fixation techniques after scaphoid excision.

[Examination of the painful wrist].

The anatomy of the wrist is complex. Mechanical, neurological or systemic causes are responsible for a painful wrist. In many cases a specific diagnosis can already be made by taking a precise medical history.