Are there benefits to one- versus two-stage procedures in bilateral hip resurfacing?

BACKGROUND: Short-term studies report comparable complication rates of one-stage bilateral versus two-stage procedures in hip resurfacing, although the long-term effects of such procedures on survivorship, quality of life, and disease-specific scores are currently unknown. QUESTIONS/PURPOSES: We compared clinical scores, length of stay, complication rates, and survivorship in patients who underwent bilateral hip resurfacing grouped on the basis of one-stage versus two-stage operation. PATIENTS AND METHODS: We retrospectively reviewed 75 patients who underwent a one-stage procedure and 87 patients who had both hips resurfaced in separate procedures. The demographics and etiologies were similar for the two groups. The mean followup time was longer in the two-stage group (7.3 years; range, 2.6-12.3 years) than in the one-stage group (6.6 years; range, 2.6-10.9 years). RESULTS: We found no differences in the latest postoperative UCLA pain, walking function, and activity scores; Harris hip scores; or SF-12 scores between the two groups. The average length of stay was shorter for the one-stage group. The early complication rates were similar between the two groups. One-stage patients had a higher revision rate than the patients in the two-stage group (14 versus four hips, respectively), but this was not true for patients with femoral components 48 mm or greater in size. CONCLUSIONS: We found a greater rate of revisions in the one-stage group, suggesting possible long-term detrimental effects of the one-stage procedure. Our data suggest selecting patients with large component sizes if the surgeries are to be performed under one anesthesia.

Clinical correlation of femoral component migration in hip resurfacing arthroplasty analyzed by Einzel-Bild-Röntgen-analyze-femoral component analysis.

Hip resurfacing arthroplasty using metal-on-metal bearings has become increasingly popular. Wear of these bearings has been imperceptible on plain radiographs. Migration analysis studies may represent the opportunity to detect early failures and evaluate long-term prosthetic survival. The authors retrospectively reviewed 29 hips in a consecutive series of metal-on-metal hip resurfacing arthroplasties with a long-term clinical follow-up (average 8.7 years) to analyze the femoral component migration pattern by means of Einzel-Bild-Röntgen-Analyze-femoral component analysis (EBRA-FCA). Femoral component migrations at 2 years and latest follow-up were compared with the known clinical outcomes. The authors' findings add validity to EBRA-FCA as a means to monitor femoral component migration and the clinical outcome of metal-on-metal hip resurfacing arthroplasty.

Arthroscopic treatment for synovial chondromatosis of the shoulder.

Synovial chondromatosis of the shoulder is a rare condition. The following is a description of such a case with the presenting symptoms, radiographic features, intraoperative findings, and the arthroscopic technique for treatment of this disease. Loose bodies were found in the long head of the biceps tendon sheath, the subscapularis recess, and throughout the glenohumeral joint, causing erosive damage. We feel that arthroscopy allows for better visualization of the entire glenohumeral joint, including the long head of the biceps tendon sheath and the subscapularis recess, and for ease of loose body removal. Additional advantages of arthroscopy include decreased postoperative pain, early active range of motion, shorter course of rehabilitation, and earlier functional return.

Fracture of the lateral process of the talus: a report of 2 cases.

Fracture of the lateral process of the talus is historically a rare injury with an increasing incidence. This fracture is easily misdiagnosed as an ankle soft-tissue sprain, and a high index of suspicion is essential in making a timely diagnosis to avoid any long-term sequelae. A CT scan should be performed in preference over an MRI scan.

A comparison of total hip resurfacing and total hip arthroplasty - patients and outcomes.

A comparison of pertinent preoperative and postoperative data relative to total hip resurfacing versus total hip arthroplasty (THA) would assist in evaluating current perceptions in outcome. We compared 50 consecutive metal-metal resurfacing replacements in 50 patients with 44 consecutive conventional total hip arthroplasties in 35 patients, who were implanted during the same time period, by the same surgeon, and followed prospectively for 2 to 4 years. The patients undergoing hip resurfacing were 62% male, 9 years younger, and 3.2 inches taller, with a lower mean body mass index and American Society of Anesthesiologists (ASA) grade than patients undergoing total hip arthroplasty. Preoperatively, patients undergoing resurfacing had a lower Harris hip score (46 vs 52 points), more pain, higher UCLA (University of California at Los Angeles) activity scores (4.2 vs 3.6), and better range of motion. Surgical time for resurfacing was 18% longer, but there was less total blood loss and fewer transfusions. Postoperatively, there was no difference in Harris hip score (97 vs 96). Patients undergoing resurfacing had higher function, Short Form-12 physical activity scores, and UCLA activity scores, but also a higher incidence of slight or mild pain. There were no differences in postoperative range of motion or dislocation (one each). The preoperative characteristics and general health status of the average patient undergoing resurfacing are more favorable than that of the average patient undergoing conventional total hip arthroplasty. Caution should be applied in attributing differences in outcomes directly to the arthroplasty technology.

Neovascularity in chronic posterior tibial tendon insufficiency.

Insufficient posterior tibial tendons in 28 specimens from patients with clinical Stage II or III disease were examined to clarify the etiology of adult-acquired flatfoot deformity. Hematoxylin and eosin and Masson trichrome-stained sections of formalin-fixed tissue were viewed in plain and polarized light. We performed a qualitative analysis for abnormalities in collagen orientation, degree of vascularization, tenocyte cellularity, mucinous change, and chondroid metaplasia. Tendons were divided into three zones: tenosynovial lining cell layer, subtenosynovial lining cell layer, and tendon proper. All tendons showed neovascular infiltration causing collagen fibril disruption; 50% of specimens had diffuse involvement. Increased mucin content and chondroid metaplasia occurred in 28% and 36% of specimens, respectively. The tenosynovial lining cell layer showed hyperplasia in 28% of specimens. The subtenosynovial lining cell layer showed thickening and neovascularization in 79% of specimens, which appeared to be the source for the diffuse neovascular infiltrative process. There is little histopathologic evidence to support an inflammatory etiology to the posterior tibial tendons in acquired-adult flatfoot deformity. Neoangiogenesis, the prominent histologic finding, is consistent with an obscure insult. We postulate that overuse, tension, or stretching may activate the tenosynovial lining cells and incite angiogenesis.

Case Reports: osteosarcoma of the hand: one case and a literature review.

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 symmetrical distribution of metastatic cancer and correlates with the sites of most active growth during development of conventional osteosarcoma.

Optimizing patient selection and outcomes with total hip resurfacing.

UNLABELLED: Short-term failures of total hip resurfacing have been related to specific characteristics of the proximal femur. A radiographic arthritic hip grading scale was used to assess four characteristics of the proximal femur: bone density, shape, biomechanics, and focal bone defects. Hips with no unfavorable characteristics were Grade A, hips with one unfavorable characteristic were Grade B, hips with two unfavorable characteristics were Grade C, hips with three unfavorable characteristics were Grade D, and hips with four unfavorable characteristics were Grade F. One hundred forty-seven consecutive hips were treated with metal-on-metal resurfacing by a single surgeon. There were no femoral neck fractures. Of the 91 hips eligible for a minimum 2 year followup, 90% were Grades A or B, 10% were Grade C, and none were Grades D or F. With a minimum 2-year followup, arthritic hip grading was associated with preoperative Harris hip score, occurrence of mild to moderate postoperative pain, preoperative and postoperative range of motion, preoperative and postoperative hip center of rotation, preoperative and postoperative horizontal femoral offset, preoperative and postoperative limb length discrepancy, and acetabular radiolucencies. Hips with a lesser degree of secondary arthritic changes have a higher arthritic hip grade and better outcomes with total hip resurfacing. Relatively strict selection criteria for resurfacing were associated with a low occurrence of short-term failures. LEVEL OF EVIDENCE: Prognostic study, Level II (retrospective study). See the Guidelines for Authors for a complete description of levels of evidence.