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Introduction: The lateralization shoulder angle (LSA), the distalization shoulder angle (DSA) and the new "pentagon" concept are tools used in scheduled shoulder surgery to evaluate the positioning of reverse shoulder arthroplasty (RSA) implants. There is no information on the intra- and inter-rater reliability of these tools in the context of RSA for a proximal humerus fracture. The first hypothesis was the high reliability of the intra- and inter-rater analysis of the LSA and DSA angles. The second hypothesis was the reproductibility of the pentagon based on LSA and DSA analysis. Methods: Forty-nine patients were evaluated retrospectively with a minimum of 2 years radiological follow-up after RSA surgery. Tuberosity healing was evaluated using an AP radiograph of the shoulder and their location analyzed within the said "pentagon" defined by the LSA/DSA angles and the maximum lengthening recommended. Results: The intra-rater analysis found strong to an almost perfect agreement for the LSA and DSA. The agreement was moderate to strong for the pentagon. The inter-rater analysis found a fair agreement for the LSA and moderate agreement for the DSA and pentagon. Conclusion: The LSA/DSA is used in patients undergoing RSA for glenohumeral OA. In this context, the tuberosities were intact and certain complications inherent to RSA for humeral fracture were not present. The population studied here (RSA after fracture) creates an interpretation bias due to the difficulty in analyzing tuberosity position. Level of Evidence: 4, retrospective study.
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BACKGROUND: There is a lack of consensus about whether stable ramp lesions associated with anterior cruciate ligament (ACL) injuries need to be repaired. PURPOSE/HYPOTHESIS: The purpose of this study was to evaluate how many stable ramp lesions left in situ during ACL reconstruction (ACLR) have subsequently failed after >20 years of follow-up. We hypothesized that ACL-reconstructed knees with ramp lesions left in situ without repair have a high risk of meniscal failure over the long term. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: All patients who underwent arthroscopic ACLR by a single experienced surgeon between January 1998 and December 2000 were evaluated retrospectively. Included were all cases of longitudinal tears in the meniscocapsular junction or the red zone of the posterior horn of the medial meniscus that were left in situ and identified through the anterior portals. Successful anterior probing confirmed a meniscal tear of the posterior segment. A lesion was considered stable if it was ≤2 cm and did not extend beyond the lower pole of the femoral condyle. The following data were collected preoperatively and at the last follow-up: demographics, time to surgery, side-to-side laxity, pivot shift, Lysholm score, subjective International Knee Documentation Committee score, Knee injury and Osteoarthritis Outcome Score, Tegner activity scale, and meniscal failure rate. We defined 2 groups based on our findings: medial meniscal failure versus no medial meniscal failure. RESULTS: A total of 716 knees underwent primary ACLR during this period. The 39 (5.4%) stable unrepaired ramp lesions identified were included in the case series. Mean ± standard deviation follow-up was 262.1 ± 10.5 months. Eleven patients (28%) were lost to follow-up. Of the remaining patients, 8 (28.6%) had a medial meniscal failure, of which 6 (21.4%) were bucket-handle tears. The average time elapsed before complications was 87.8 ± 52 months (range, 6-156 months). The medial meniscal survival rate was 93% at 5 years, 75% at 10 years, and 71% at 15 and 20 years. The failure event mainly happened between 96 and 120 months (8 and 10 years) after ACLR. No risk factors for failure were found, but some trends appeared, such as older age, higher body mass index, and preoperative rotational instability. All postoperative scores were significantly improved at the last follow-up (P < .0001); 16 patients (57%) returned to their sport of choice. CONCLUSION: With nearly one-third of patients developing meniscal complications, including a large share of bucket-handle tears and mostly occurring 8 years after the ACLR, it may not be wise to leave stable ramp lesions unrepaired.
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Lesiones del Ligamento Cruzado Anterior , Traumatismos de la Rodilla , Lesiones de Menisco Tibial , Lesiones del Ligamento Cruzado Anterior/patología , Lesiones del Ligamento Cruzado Anterior/cirugía , Estudios de Seguimiento , Humanos , Traumatismos de la Rodilla/cirugía , Meniscos Tibiales/patología , Meniscos Tibiales/cirugía , Estudios Retrospectivos , Lesiones de Menisco Tibial/cirugíaRESUMEN
INTRODUCTION: The functional results of stemless reverse shoulder prostheses are similar to those with stems. However, the operative time and the bleeding appear less significant because of the absence of humeral reaming. To date, the data amongst the literature regarding this subject is limited. Thus, we report a retrospective evaluation on these 2 types of prostheses by assessing their respective intraoperative blood loss. HYPOTHESIS: Reverse shoulder arthroplasty without a stem leads to less blood loss, compared to arthroplasty with a stem. MATERIALS AND METHODS: Twenty-three patients underwent an operation for a stemless prosthesis, while 37 patients had a prosthesis with a stem. The hemoglobin was measured preoperatively, as well as postoperatively. Drainage of the operative site was maintained for two to three days. In the stem group, the preoperative hemoglobin was 14g/dL (11.7-16.6), while it was 13.1g/dL (11-15.8) in the stemless group. RESULTS: The intraoperative bleeding reached 223cm3 (80-530), with an operative duration of 81minutes (40-110) in the stemless group, compared to 260cm3 (50-1000) and 92minutes (33-110) in the stem group. On the first day postoperatively, 333cm3 (20-570) of blood had been collected by drainage for the stemless group, compared to 279cm3 (40-550) in the stem group. The amount decreased the second day, with 139cm3 (20-510) and 129cm3 (0-750) respectively. There was no difference between the two groups regarding the postoperative hemoglobin level (11g/dL). DISCUSSION: There is no significant difference concerning the blood loss between reverse shoulder replacements with and without stems. LEVEL OF EVIDENCE: III Retrospective case control study.
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Artroplastía de Reemplazo de Hombro , Articulación del Hombro , Prótesis de Hombro , Artroplastía de Reemplazo de Hombro/efectos adversos , Artroplastía de Reemplazo de Hombro/métodos , Estudios de Casos y Controles , Humanos , Diseño de Prótesis , Estudios Retrospectivos , Articulación del Hombro/cirugía , Prótesis de Hombro/efectos adversos , Resultado del TratamientoRESUMEN
Upper limb chronic exertional compartment syndrome (CECS) has been described in amateur and professional motorcycle racers, but there is no published data about its prevalence. The purpose of this study was to define the awareness, prevention and prevalence of this syndrome in licensed motorcycle racers in competition in France. Secondary purposes were to determine the functional impact of CECS and post-treatment outcomes. The 20,641 licensed racers in competition of the French Motorcycle Federation were sent a self-assessment questionnaire about upper limb pain and CECS physical examination findings, functional impact and treatment outcomes. The satisfaction level was assessed after each type of treatment. Acceptability rate was 6.35% with 1311 racers responding. CECS was unknown by 29% of racers. Prevention methods were unknown by 10% of racers. Less than 50% of racers modified their bikes. The prevalence of upper limb CECS in competitive racers was 9%: 8.7% forearm, 0.2% thenar, 0.1% hypothenar and 0.4% first dorsal interosseus compartments. The prevalence was 16% in international level racers, 11% in national level racers and 7.3% in regional level racers. A quarter of racers were satisfied or very satisfied with the outcomes of conservative therapy and rehabilitation. Only 67 racers underwent surgical treatment for their upper limb CECS: 31 by open fasciotomy, 23 by minimally invasive fasciotomy and 13 by endoscopy-assisted compartment release. In these 67 racers, the mean visual analog score for pain improved significantly (p < 0.001 95% CI [3.1-4.5]) with 81% satisfied or very satisfied with surgery outcomes. This epidemiologic self-assessment questionnaire for upper limb CECS is a new concept. This study screened for CECS and offer information regarding evaluation, treatment, and management.