[Feedback on the evaluation of clinical pharmacy activities developed in surgery]. / Retour d'expérience sur l'évaluation des activités de pharmacie clinique développées en chirurgie.

INTRODUCTION: Our current development strategy integrates clinical pharmacy activities prioritized in surgical services. Patients in these services are typically risk patients: transfers, multiple prescribers, frequent medication change, pharmacotherapeutic risk classes. PATIENTS AND METHODS: Three clinical pharmacy activities (admission reconciliation, pharmaceutical analysis, participation doctors round) have been developed in orthopaedic surgery and neurosurgery. Pharmacists prospectively recorded data describing their activities: number of reconciliations and analyzed requirements and time required to achieve them. Data on pharmaceutical interventions were recorded on the basis ActIP®. The clinical significance of interventions was retrospectively rated by a team of two pharmacists and two physicians on the scale adapted Hatoum et al. RESULTS: Four thousand five hundred pharmaceutical analysis and 248 reconciliations were conducted. One hundred and fifty-six pharmaceutical interventions were issued. The average acceptance rate was 80%. A total of 5.8% of pharmaceutical interventions have been listed with a very significant clinical importance and 48.1% with at least significant clinical importance. The activities and documentation required pharmaceutical average daily time (senior pharmacist, resident and external pharmacist) about 6 hours. DISCUSSION AND CONCLUSION: Other studies, including comparative and medico-economic, must be conducted to support these results. Nevertheless, the indicators obtained attend a better readability of the clinical importance of the activities performed by clinical pharmacists and this particularly in surgical services, both by prescribers and authorities.

[Clinical pharmacy and surgery: Review]. / Pharmacie clinique et chirurgie : revue de la littérature.

Clinical pharmacy has been developed and evaluated in various medical hospital activities. Reviews conducted in this area reported a higher value of this discipline. In surgical services, evenly adverse drug events may occur, so clinical pharmacy activities must also help to optimize the management of drug's patient. The objectives of this literature review is to determine the profile of clinical pharmacy activities developed in surgical services and identify indicators. The research was conducted on Pubmed(®) database with the following keywords (2000-2013), "surgery", "pharmacy", "pharmacist", "pharmaceutical care", "impact" and limited to French or English papers. Studies dealing on simultaneously medical and surgical areas were excluded. Twenty-one papers were selected. The most frequently developed clinical pharmacy activities were history and therapeutic drug monitoring (antibiotics or anticoagulants). Two types of indicators were identified: activity indicators with the number of pharmaceutical interventions, their description and clinical signification, the acceptance rate and workload. Impact indicators were mostly clinical and economic impacts. The development of clinical pharmacy related to surgical patients is documented and appears to have, as for medical patients, a clinical and economical value.

Popeye sign: Tenodesis vs. self-locking "T" tenotomy of the long head of the biceps.

INTRODUCTION: Treatment of long head of the biceps lesions is controversial. A new technique of self-locking "T" tenotomy was developed in our department in 2013. HYPOTHESIS: The main objective of the present study was to assess onset of Popeye sign after "T" tenotomy, with comparison to long head of the biceps tenodesis. MATERIAL AND METHODS: A continuous retrospective study included 180 patients with long head of the biceps lesion, either isolated or associated with rotator cuff tear. RESULTS: 130 underwent "T" tenotomy (group A), and 50 tenodesis (group B). Mean age was 57.9 years (range, 23-88 years) in group A and 50.8 years (range, 20-66 years) in group B. At last follow-up, 27.7% of patients in group A and 24% in group B showed Popeye sign (P=0.616), after equivalence test and adjustment on age and occupational activity. Bicipital groove pain was more frequent in the tenodesis group (44% versus 25.4%; P=0.025). DISCUSSION: Self-locking "T" tenotomy did not significantly differ from tenodesis in onset of Popeye sign or clinical results, and showed better postoperative course. LEVEL OF EVIDENCE: IV, retrospective study.

[Proposal for new anterior portals for wrist arthroscopic as a complementary approach to open anterior wrist surgery]. / Arthroscopie complémentaire de l'ostéosynthèse du radius distal par abord antérieur: bases anatomiques de nouvelles voies arthroscopiques antérieures.

PURPOSE OF THE STUDY: Morphological and morphometric studies of the wrist ligaments are scarce. The radiocapitatum and scapholunate ligaments play a pivotal role in wrist stability. Classically, a posterior approach is used for arthroscopic procedures, but an anterior approach should be possible. We conducted a cadaver study to search for new anterior portals for wrist arthroscopy. MATERIAL AND METHODS: Twenty-five formol-treated upper limbs were dissected. The classical anterior approach for open wrist surgery was executed. The different elements of the capsule-ligament system of the anterior aspect of the wrist were identified and labeled. The dissection was then extended to the ulna in search of soft points which were identified and evaluated. The different structures generally identified during wrist arthroscopy were noted. RESULTS: Two potential portals were identified in all wrists: one between the radiolunate ligament and the radio-scapho-capitatum ligament on the radial aspect and one between the radio-lunate ligament and the ulno-lunate ligament. Arthroscopic exploration enabled observation of the scapho-lunate ligament, the luno-triquetral ligament, the triangular complex of the carpus, and the entire inferior aspect of the radial joint surface, with no risk of vessel or nerve injury because of the exposure allowed by the osteosynthesis approach. DISCUSSION: Wrist arthroscopy is now accepted as a reliable technique not only for diagnostic purposes but also for therapeutic interventions for the treatment of fractures of the lower radius. Most of the arthroscopic portals described in the literature are posterior. The anterior portals described here do not involve any vascular or neurological risk since the radial approach is made under visual control by extension of the open anterior approach and on the ulnar side the noble structures are positioned medially to the ulnar flexor tendon of the carpus. This enables good triangulation necessary for the usual arthroscopic procedures. Finally, these portals have no supplementary morbidity which would be the case with percutaneous portals (injury to the medial nerve, the radial vasculonervous bundle, the radial flexor tendon). CONCLUSION: These new arthroscopic portals are complementary to the anterior approach for open wrist surgery and enable a natural extension of joint exploration via both the radial and ulnar approaches described in this study.

Intra- and inter-observer agreement in MRI assessment of rotator cuff healing using the Sugaya classification 10years after surgery.

BACKGROUND: The long-term outcomes of rotator cuff repair are unclear. Recurrent tears are common, although their reported frequency varies depending on the type and interpretation challenges of the imaging method used. The primary objective of this study was to assess the intra- and inter-observer reproducibility of the MRI assessment of rotator cuff repair using the Sugaya classification 10years after surgery. The secondary objective was to determine whether poor reproducibility, if found, could be improved by using a simplified yet clinically relevant classification. HYPOTHESIS: Our hypothesis was that reproducibility was limited but could be improved by simplifying the classification. MATERIAL AND METHOD: In a retrospective study, we assessed intra- and inter-observer agreement in interpreting 49 magnetic resonance imaging (MRI) scans performed 10years after rotator cuff repair. These 49 scans were taken at random among 609 cases that underwent re-evaluation, with imaging, for the 2015 SoFCOT symposium on 10-year and 20-year clinical and anatomical outcomes of rotator cuff repair for full-thickness tears. Each of three observers read each of the 49 scans on two separate occasions. At each reading, they assessed the supra-spinatus tendon according to the Sugaya classification in five types. RESULTS: Intra-observer agreement for the Sugaya type was substantial (κ=0.64) but inter-observer agreement was only fair (κ=0.39). Agreement improved when the five Sugaya types were collapsed into two categories (1-2-3 and 4-5) (intra-observer κ=0.74 and inter-observer κ=0.68). CONCLUSION: Using the Sugaya classification to assess post-operative rotator cuff healing was associated with substantial intra-observer and fair inter-observer agreement. A simpler classification into two categories improved agreement while remaining clinically relevant. LEVEL OF EVIDENCE: II, prospective randomised low-power study.

Osteoarthritis after rotator cuff repair: A 10-year follow-up study.

BACKGROUND: Joint surgery is often complicated by gradual bone and cartilage deterioration that eventually leads to secondary osteoarthritis. The primary objective of this study was to identify preoperative risk factors for gleno-humeral osteoarthritis after rotator cuff repair. The secondary objectives were to assess whether the risk of gleno-humeral osteoarthritis was influenced by the operative technique, occurrence of postoperative complications, cuff healing, and muscle degeneration and to determine whether gleno-humeral osteoarthritis affected the clinical outcome. HYPOTHESIS: The development of gleno-humeral osteoarthritis affects the postoperative clinical outcome. MATERIAL AND METHOD: A retrospective multicentre study of patients who underwent rotator cuff repair in 2003 and were re-evaluated at least 10 years later was conducted under the aegis of the Société française de chirurgie orthopédique et traumatique (SOFCOT). Osteoarthritis severity was graded according to the Samilson-Prieto classification. RESULTS: Four hundred and one patients were included. At last follow-up, at least 10 years after surgery, the radiological Samilson-Prieto grades were distributed as follows: 0, n=181 (45%); 1, n=142 (n=35%); 2, n=57 (14%); 3, n=14 (4%); and 4, n=7 (2%). The mean Constant score was significantly higher in the patients without than with osteoarthritis at last follow-up (79/100 vs. 73/100, P<0.001). MRI assessment of cuff healing showed that the proportion of patients with osteoarthritis was significantly higher in the group with unhealed or re-torn cuffs (Sugaya type 4 or 5) than in the group with healed cuffs (Sugaya type 1, 2, or 3) (46% vs. 25%, P=0.012). DISCUSSION: Our study showed no associations linking the risk of gleno-humeral osteoarthritis to the patient activity profile, history of shoulder injury, or preoperative symptom duration. In contrast, statistically significant associations were identified between gleno-humeral osteoarthritis and age, male gender, initial tear severity, and the pain and mobility components of the preoperative Constant score. Decreased invasiveness of the operative technique probably diminishes the long-term risk of osteoarthritis. An unhealed or re-torn cuff increases the risk of osteoarthritis. Osteoarthritis is associated with poorer final clinical outcomes. LEVEL OF EVIDENCE: IV, retrospective non-randomised study.

[Arthroscopic surgery of the acromioclavicular joint]. / Arthroscopie de l'articulation acromioclaviculaire.

Lesion of the acromioclavicular joint is a usual clinical condition because of it superficial situation. It is often involved in trauma of the shoulder girdle. Moreover, degenerative changes are quite always observed for patients over 40. Distal clavicle resection as a treatment of acromioclavicular joint disease had been first described in 1941. Clinical results in term of mobility and shoulder pain are good and durable in time. Referring to the expansion arthroscopic techniques, distal clavicle resection lead to same middle and long term results as open surgery. Arthroscopic procedures have the theoretical advantages of no deltoid disruption and may help the surgeon to diagnose and treat associated lesions such as rotator cuff ruptures. More recently, arthroscopic surgeries for fresh and/or chronic acromioclavicular disjunctions were proposed. These procedures remain in development and need further evaluations.

Revisions of total shoulder arthroplasty: Clinical results and complications of various modalities.

INTRODUCTION: The number of primary total shoulder arthroplasties has increased exponentially in recent years, with a corresponding increase in the number of revision procedures. OBJECTIVE: To assess clinical results and complications in a series of shoulder implant replacement, of whatever etiology. MATERIALS AND METHODS: Thirty-seven patients, with a mean age of 68.3±11.8 years at time of implant replacement, were included in a retrospective study. Mean interval between primary arthroplasty and revision was 78.4±59.7 months (range, 1-200 months). The main assessment criterion was changed in Constant score between preoperative value and follow-up. Secondary criteria were: onset of intra- and postoperative complications, and reoperation related to a complication. RESULTS: Mean follow-up was 41.5±32.0 months (range, 12-105 months). Absolute Constant score increased by a mean 17.5±15.1 points (P<0.001) and weighted Constant score by 26.3±23.6 points (P<0.001). Intraoperative complications occurred in 24.3% of patients (9/37) and postoperative complications in 29.7% (11/37). Among the patients, 21.6% (8/37) required reoperation for postoperative complications. Overall, 54% of patients (20/37) suffered from intra- or postoperative complications. CONCLUSION: Shoulder implant replacement improved function in the present series, but with a high rate of complications and reoperations. LEVEL OF EVIDENCE: IV, retrospective case-control study without control group.

Critical shoulder angle: Measurement reproducibility and correlation with rotator cuff tendon tears.

BACKGROUND: Associations have been reported linking rotator cuff tears (RCTs) to both greater lateral extension of the acromion and greater inclination of the glenoid cavity. These two factors combined can be assessed using a recently introduced parameter, the critical shoulder angle (CSA). The primary objective of this study was to confirm the association linking a high CSA value to RCTs, and the secondary objective was to assess the reproducibility of CSA measurement using a goniometer. HYPOTHESIS: The null hypothesis was that the CSA value in a group of patients with RCTs was not significantly different from that in patients with anterior shoulder instability and a Bankart lesion, taken as the general population for this study. METHODS: After a power estimation, we retrospectively included 28 patients with a mean age of 55.5 years who had surgery for RCTs and 27 patients with a mean age of 27.2 years who underwent anterior labral repair. Two surgeons used a goniometer to measure the CSA in each patient. Reproducibility was assessed based on Bland-Altman plots and Pearson's correlation coefficient. RESULTS: The mean CSA was significantly higher (P=0.02) in the RCT group (36.4°±4.4°; range: 30°-46°) than in the labral-repair group (33.3°±3.8°; range: 25°-41°). Intra-observer reproducibility was 96.7% and inter-observer reproducibility was 95.5%. CONCLUSION: Our results support previously published evidence that the CSA is significantly greater in patients with RCTs. Thus, an anatomical difference seems to exist between patients with RCTs and the general population. The CSA measured on a standard radiograph using a goniometer provides a reproducible assessment of this anatomical difference. LEVEL OF EVIDENCE: IV, case-control epidemiological study with a power estimation.

[Arthroscopic resection of pigmented villonodular synovitis pseudotumor of the shoulder: a case report with three year follow-up]. / Exérèse arthroscopique d'une forme pseudo-tumorale de synovite villonodulaire pigmentée de l'epaule: a propos d'un cas au recul de 3 ans.

Pigmented villonodular synovitis can be localized or diffuse. Lesions predominate in the knee but all of the joints can be involved. Thirty cases in the glenohumeral joint have been reported in the literature. The different reports to date have not identified any specific clinical signs. Our female patient presented non-specific shoulder pain which persisted for three years. The plain x-rays were normal. MRI and arthroscan revealed an intra-articular pseudotumor. Arthroscopy was performed for tumor biopsy which was followed by total resection. The diagnosis of villonodular synovitis pseudotumor suspected at arthroscopy was confirmed at the pathology examination. The functional outcome was excellent and no recurrence has been observed at three years follow-up. Arthroscopy is less aggressive than open surgery for arthrotomy. Arthroscopy must be performed for diagnostic purposes since imaging findings are not specific. Arthroscopic synovectomy is the treatment of choice for pigmented villonodular synovitis in both the diffuse and pseudotumor forms.

[Transverse radioulnar branch of the dorsal ulnar nerve: anatomic description and arthroscopic implications from 45 cadaveric dissections]. / Le rameau transverse de la branche dorsale du nerf ulnaire: anatomie et rapports avec les voies arthroscopiques du poignet: quarante-cinq dissections.

PURPOSE OF THE STUDY: We conducted an anatomic study of the transverse branch of the dorsal ulnar nerve to describe its morphology and position in relation to arthroscopic exploration portals. MATERIAL AND METHODS: Forty-five non-side-matched anatomic specimens of unknown age and gender were preserved in formol. The dorsal branch of the ulnar nerve was identified and dissected proximally to distally in order to reveal the different terminal branches. The morphometric analysis included measurement of the length and diameter of the transverse branch and measurement of wrist width. We also measured the smallest distance between the transverse branch and the ulnar styloid process, and between the branch and usual arthroscopic portals (4-5, 6R, 6U) in the axis of the forearm. RESULTS: The transverse branch was inconstant. It was found in 12 of the 45 dissection specimens (27%). In two-thirds of the specimens, the branch ran over less than 50% of the wrist width, tangentially to the radiocarpal joint. Mean nerve diameter was 1 mm. It was found 5-6 mm from the ulnar styloid process and was distal to it in 83% of the specimens. The dissections demonstrated two anatomic variants. Type A corresponded to a branch running distally to the ulnar styloid process, parallel to the joint line (10/12 specimens). Type B exhibited a trajectory proximal to the ulnar styloid process, crossing the ulnar head (2/12 specimens). The relations with the arthroscopic portals (4-5, 6R, 6U) showed that the mean distance from the branch to the portal was 3.75 mm for the 4-5 portal (distally in 11/12 specimens), 3.68 mm for the 6R portal (distally in 10/12 specimens), and 4.83 mm for the 6U portal (distally in 7 specimens and proximally in 5). DISCUSSION: To our knowledge, there has been only one report specifically devoted to this transverse branch. Two other reports simply mention its existence. According to the literature, the transverse branch of the dorsal ulnar nerve occurs in 60-80% of the cases. We found two anatomic variations different than those described in the literature. Based on our findings and data reported previously, we propose a new classification, describing two main types. In Type 1, the transverse branch arises proximally to the ulnar styloid process;type 1A and type IB are described in relation to the direction of the branch. In Type II, the branch arises distally to the ulnar styloid process;type IIA and type IIB again being described in relation to the direction of the branch. On the tangential trajectory over the radiocarpal joint, the morphometric data show a zone of risk described by a rectangle measuring 10 mm wide (6 mm distal and 4 mm proximal to the ulnar styloid process) and covering 50% of the wrist width. The relations with arthroscopic portals describe a zone of risk corresponding to a 5-7 mm radius circle centered on the portals (4-5, 6R, 6U), which includes 83% of the transverse branches.

[Arthroscopic repair of full-thickness cuff tears: a multicentric retrospective study of 576 cases with anatomical assessment]. / Réparation arthroscopique des ruptures transfixiantes de la coiffe des rotateurs: étude rétrospective multicentrique de 576 cas avec contrôle de la cicatrisation.

PURPOSE OF THE STUDY: Totally arthroscopic repair of rotator cuff tears is now common practice. The techniques used were evaluated by a retrospective multicentric analysis conducted by the French Society of Arthroscopy. MATERIAL AND METHODS: The series was limited to arthroscopic repair of full thickness tears of the supraspinatus or infraspinatus evaluated using the Constant score and arthro-MRI or arthroscan performed with at least one year follow-up. Data were processed with SPSS 10. The series included 576 patients who underwent surgery between January 2001 and June 2003. Mean patient age was 57.7 years; 52% were men and 60% were manual laborers. The mean preoperative Constant score was 46.4 +/- 13.4/100. The tear was limited to the supraspinatus in 69% of shoulders, with extension to the upper third of the infraspinatus in 23.5% and the entire infraspinatus in 7.5%. The supraspinatus tear was distal in 41.7% of shoulders, intermediary in 44% and retracted in 14.3%. Fatty degeneration of the supraspinatus was noted grade 0 in 60%, 1 in 27%, 2 in 11% and 3 in 2%. Arthroscopic repair was performed in all cases, with locoregional anesthesia in 60.9%. Bioresorbable implants were used in 33% and metallic implants in 62.1%. Acromioplasty was performed in 92.7% and capsulotomy in 14.9%. RESULTS: On average, the subjective outcome was scored 8.89/10. The Constant score improved from 46.3 +/- 13.4 to 82.7 +/- 10.3 with 62% having a strictly pain free shoulder. Muscle force improved from 5.8 +/- 3.7 to 13.6 +/- 5.4. Outcome was excellent in 94% of shoulders at 18.5 months mean follow-up. The complication rate in this series was 6.2% with 3.1% prolonged stiffness, 2.7% reflex dystrophy, 0.2% infection, and 0.2% anchor migration. The cuff was considered normal in 55.7% of shoulders with an intratendon addition image in 19%, i.e. 74.7% of non-ruptured cuffs. Minimal loss of integrity was noted in 9.5% and was marked in 15.7%, i.e. 25.2% iterative tears.ANATOMOCLINICAL CORRELATIONS: The Constant score was strongly correlated with rotator cuff integrity (p<0001). This correlation was also found for force (p<0001), motion (0.01) and activity (0.04), but not for pain. The clinical outcome was correlated with extension, retraction, intrasubstance tear, and fatty degeneration of the lesion preoperatively. Anatomic results were statistically less favorable for tears which were older, extensive, retracted or associated with fatty degeneration. Age was correlated with extent of the initial tear and also with less favorable anatomic and clinical outcome. Occupational accidents were correlated with less favorable clinical outcome. CONCLUSION: Functional improvement after healing is a strong argument for repair. Arthroscopy has the advantage of combining a low complication rate with good clinical and anatomic results. Age is correlated with functional outcome and healing, but is not a contraindication.

Arthroscopic elbow joint release with radial head resection arthroplasty: 12 cases.

BACKGROUND: Elbow arthritis typically affects manual labourers aged 40 to 50 years and usually starts in the lateral compartment. The objective of this study was to evaluate the medium-term clinical, functional, and radiological outcomes in 12 patients after arthroscopic elbow joint release and radial head resection arthroplasty. HYPOTHESIS: Our main hypothesis was that pre-operative damage to the radio-capitellar joint was associated with poorer clinical outcomes after elbow joint release. MATERIAL AND METHOD: Consecutive patients treated by a single surgeon at a single centre between July 2006 and May 2014 were studied retrospectively. The 12 patients - 10 males and 2 females with a mean age of 54.5±9.3 years (33-69 years) - had osteoarthritis confined to the radio-capitellar compartment with elbow stiffness and pain and underwent arthroscopic elbow joint release with radial head resection arthroplasty. Among them, 9 had a history of trauma or micro-trauma and 3 had rheumatoid arthritis. The Broberg and Morrey osteoarthritis grade on the pre-operative radiographs was 1 in 4 patients, 2 in 6 patients, and 3 in 2 patients. RESULTS: Mean follow-up was 38.1±33.7 months (5-97). One patient required total elbow arthroplasty. Mean arc of motion was 79.6°±20.5° (30-110) pre-operatively, 123.6±18° (90-140) immediately after surgery, and 109°±11.7° (90-120) at last follow-up. At last follow-up, mean values were 81.4±12.5 (65-100) for the Mayo Elbow Score, 11.1±11.1 (2.3-31.8) for the Quick DASH score, and 1.1±1.6 (0-4) for the visual analogue scale pain score. The radiological assessment at last follow-up showed no evidence of osteoarthritis progression. CONCLUSION: In our case-series, arthroscopic elbow joint release with radial head resection arthroplasty produced good outcomes with a motion arc greater than 100° and little or no pain after a mean follow-up of 3.1 years. LEVEL OF EVIDENCE: IV, retrospective study.

Hip arthroscopy in hereditary multiple exostoses: A new perspective of treatment.

The cases of 2 children (9 and 11 years old) with hereditary multiple exostoses disease are presented. The lesions were located primarily in the acetabular fossa of the left hip and caused pain and limitation of range of motion. Hip arthroscopy was performed to remove the exostoses without damaging the articular surfaces and the Y cartilage. After the procedure, the pain disappeared and normal range of motion was recovered for both children. Conventional surgery would have required hip dislocation to access these lesions with an increased risk of femoral head necrosis. These cases constitute a new and interesting application of hip arthroscopy.

Primary glenohumeral osteoarthritis: clinical and radiographic classification. The Aequalis Group.

One hundred and fifty-one cases of primary glenohumeral osteoarthritis were analyzed both clinically and radiographically with CT scanning. There were 76% females in this series, and the mean age at operation was 66.8 years. The diagnosis was made only with true anteroposterior views of the shoulder which show the narrowing of the glenohumeral joint and the presence of osteophytes. The arthrogram showed a supra-spinatus tear in 10% of the cases that extended to the infra-spinatus in 2.6%. Glenoid retroversion averaged 15.4 degrees. However, measurements of glenoid retroversion with CT-scan do not distinguish posterior wear from glenoid dysplasia. Posterior subluxation of the humeral head was observed in 45% of the cases. We describe a classification of the glenoid morphology in three types: Type A (53.5%) is characterized by an equal balance of forces acting on the glenoid and a centralized humeral head. Type B (39.5%) has asymmetrical posterior force distribution on the glenoid and a posterior subluxation of the humeral head. Type C (5%) is arbitrarily defined as glenoid retroversion greater than 25 degrees. Posterior subluxation of the proximal humeral head did not correlate with either glenoid retroversion or humeral retroversion. However, subluxation of the humeral head may be responsible for the posterior glenoid erosion and possibly for the biconcave appearance of the glenoid observed in primary glenohumeral osteoarthritis. The posterior subluxation of the humeral head may still be present after shoulder arthroplasty and may be responsible for glenoid loosening due to a "horizontal rocking-horse effect".

[Intrameniscal ossicle of the knee (lunula). Apropos of a case. Review of the literature]. / Ossicule intraméniscal du genou (lunula). A propos d'un cas. Revue de la littérature.

An intrameniscal ossicle was discovered and resected by arthroscopy in the anterior horn of a medial meniscus. Intrameniscal ossicles are exceptional; 33 cases are described in the literature. In the great majority of cases, they are discovered in the posterior horn of the medial meniscus in young males. These ossicles most often cause diffuse pain in the knee, but may be asymptomatic. Conservative treatment seems to be recommended in the majority of the cases.

[Comparison of mechanical qualities of cortical bone preserved by various freezing methods]. / Comparaison des qualités mécaniques de l'os cortical de banque suivant la méthode de congélation.

The purpose of this study was to compare the mechanical properties of the human cortical bone following three deep-freezing techniques: addition of D.M.S.O. (di-methyl-sulfoxide) and staged decrease of temperature with immersion into liquid nitrogen, immersion into nitrogen without cryoprotection, deep freezing in an electric device, down to -80 degrees C. Axial loading tests performed on two femurs (88 samples) allowed to determine the strain of failure fmax and the Young's modulus E. Torsion tests were undertaken on four femur (66 samples) to obtain the strain failure tmax and the Young's modulus G. We have taken several samples from the cortex, that we randomly divided into four groups, three of them being deep-frozen with one of the methods studied, the fourth being tested "fresh", after standard sample manufacturing. The results obtained at the fresh state were comparable with those published in the literature (fmax = 158 MPa, E = 9000 MPa, tmax = 60 MPa, G = 4000 MPa). The results obtained after deep freezing both in axial loading and in torsion, demonstrated significant differences, ever though of low value. The surgeon may use one of either freezing method, without fearing any deterioration of the mechanical properties that could threaten the primary stability of the graft. However, only liquid nitrogen permits a long lasting storage, and only the use of cryoprotection can give the hope of preservation of the chondrocytes in case of diaphyseal-epiphyseal grafts.

[A new implant for proximal humeral fracture: experimental study of the basket plate]. / Un nouvel implant pour les fractures de l'humérus proximal: la plaque à corbeille. Etude expérimentale.

PURPOSE OF THE STUDY: We conducted a comparative study of three ostheosynthesis systems for proximal humeral fractures. The conclusions led to the elaboration of a rigid extramedullary osteosynthesis implant. This novel implant allows specific fixation of the tuberosities via six adjustable and removable hooks organized like a basket. There are two versions, with and without a central cephalic locking screw. We report two static biomechanical studies conducted to analyze this material. MATERIAL AND METHODS: The two studies were performed on fresh frozen cadaver specimens with known bone density and with an experimental model of a four-fragment fracture of the proximal humerus. The first tests were designed to measure axial pressure reproducing the physiological movement applying the most stress on the head of the humerus. This allowed a global analysis of the mechanical behavior of the implant and an assessment of the contribution of the central cephalic locking screw. The second series of tests were traction tests used to analyze the behavior of the tuberosities fixed with the hooks. We assess the assemblies by measuring the mechanical resistance: rigidity of the fixation was recorded in mm/100N. Pre- and post-procedure x-rays and photographs were obtained to allow a subjective assessment of fragment displacement. RESULTS: The first series of tests demonstrated that the implant, with the central cephalic locking screw, presented good overall mechanical properties. The notion of better stability of the tuberosities obtained with the hooks, as seen during the first tests, was reinforced by the data from the second tests, although no statistically significant difference was demonstrated. We also noted that there was no statistically significant correlation between bone density and the slopes of the force-resistance curves. DISCUSSION: This prototype implant has an overall mechanical resistance equivalent to the reference implant, with at least equivalent performance. Proof of the usefulness of the central locking screw was not established, even though improved tolerance to loading by better force distribution seemed apparent. The contribution of the hook basket was not demonstrated. Data from the observations do however suggest the expectations of the implant will be fulfilled. Tests conducted on a larger scale would probably demonstrate a difference. It is clear that the small number of implants used here limited the study. Comparison with data in the literature show that this new prototype is adapted to the mechanics of the proximal humerus. Resistant to physiological stress, the implant allows pendular movement and passive physical therapy during the early post-operative period.

[Arthroscopic treatment of chronic anterior instability of the shoulder by staple capsulorrhaphy. Apropos of a series of 55 patients with a minimum of 18 months follow-up]. / Traitement arthroscopique de l'instabilité antérieure chronique de l'épaule par capsulorrhaphie avec agrafage. A propos d'une série continue de 55 cas ayant un recul supérieur à 18 mois.

PURPOSE OF THE STUDY: The authors studied the results of the arthroscopic staple capsulorrhaphy of 55 patients who had recurrent anterior shoulder instability. MATERIALS AND METHODS: There were 38 men and 17 women. The average age at operation was 30.3 years (17 to 68) and the dominant side was injured in 33 patients. 28 (51 per cent) patients had recurrent dislocations, 19 (38 per cent) patients had recurrent subluxations and 8 (14 per cent) complained of a painful shoulder with instability. Multidirectionnal hyperlaxity and glenoid rim fracture cases were excluded from this study. The average duration of symptoms was 43 months (i to 180). At operation, 46 patients had a Bankart lesion (Adolfsson A or C) and 9 had "non Bankart" lesion (Adolfsson B and intra ligamentous disruption). There were 6 (11 per cent) SLAP II lesions and 23 (42 per cent) other glenoid labral tears associated with main instability lesions. 58 staples were inserted. 53 inferior glenoid humeral ligament were fixed to the glenoid rim and in 2 cases we performed a subscapularis tendon tenodesis. RESULTS: The follow-up was continued for at least 18 months after treatment by an examiner different from the operating surgeon. (Average follow-up was 29.8 months). The results were assessed according to "Duplay" rating scale. Overall we have obtained 64 per cent excellent and good results. 71 per cent of shoulders were considered stable at revision whereas 7 per cent showed recurrent dislocation. 60 per cent of patients were able to return to their previous sport level. A limited range of motion was noted in only 11 per cent of cases. On the other hand 54 per cent of patients presented persistent pain. With regard to the shoulder stability, the factors possibly having a negative influence were the occurrence of an initial acute dislocation, the destruction of the inferior glenohumeral ligament (disruption or absence) and the sub-equatorial position of the staple on the anterior glenoid rim. Pain was more frequent in cases where there was associated subacromial impingement and where the staples had been badly positioned. DISCUSSION: We have compared our results with those of other authors who also performed stapling procedures, including different arthroscopic techniques and results of open stabilization surgery. Our results regarding shoulder instability were better than those obtained by arthroscopic sutures, equivalent to those obtained by the "Open Bankart" procedure, but less impressing than those obtained by the "Bone Block" procedure (Patte). However, pain was observed much more frequently than with all the other stabilization techniques, arthroscopic or not. CONCLUSION: Arthroscopic stapling therefore seemed to be less reliable than the "Patte Bone Block" procedure. At present, we reserve arthroscopic stabilization for patients with a good inferior glenohumeral ligament. Until an adapted biodegradable staple is perfected, we still use an anchorsuture technique to avoid pain due to metallic implant.

[Reconstruction by graft and reinforcement device in severe aseptic acetabular loosening: 10 years survivorship analysis]. / Reconstruction par greffe et anneau de soutien des descellements acétabulaires aseptiques avec perte de substance osseuse sévère. Analyse actuarielle sur 10 ans.

PURPOSE OF THE STUDY: We report our experience with the treatment of aceptic acetabular loosening with important loss of bone stock using a graft and a metallic reinforcement device. MATERIAL AND METHOD: We carried out a retrospective study on 56 acetabular revision arthroplasties with severe loss of bone stock performed between November 1980 and June 1992. Mean age of the 35 females and 19 males was 68.5 years. In all cases, there was a combined lesion (cavity + segmentary) of two roofs (type 3 or 4 in the SOFCOT classification). The superior wall was concerned in all cases (80 p. 100 with a combined lesion). Reconstruction was performed using grafts (autograft (n=15), allograft (n=39) or both (n=2)) covering more than 50 p. 100 of the socket. Structural grafts were embedded into the defects in case of superior combined lesion with extension to the anterior and the posterior walls. A morselized graft was used to fill other defects. The reinforcement device was a Müller ring (n=35) or the Burch-Schneider APC (n=21). Mean follow-up was 8.75 years (range 3 - 16 years). RESULTS: There were 29 iterative aseptic loosenings of acetabular component revised or non-revised (n=11). Twenty-four of these cases had a Müller ring and 5 had a Burch-Schneider APC. The 10-year cumulative survival rate (CSR) was 0.43 +/- 0.16 and the 11-year CSR was 0.350.16 using iterative aseptic loosening as the end point. The lateral position of the hip center (p=0.02), female gender (p=0.03), and the Müller ring (p=0.0054) were statistically negative factors. The 10-year CSR was 0.44 +/- 0.18 for the Müller ring and 0.78 +/- 0.1 for the Burch-Schneider APC, the difference being statistically significant (p=0.007). These two populations were strictly comparable. CONCLUSIONS: In case of important loss of bone stock, reconstruction by grafts is widely used as reported in the literature. A metallic reinforcement device must be used to protect the graft during incorporation and to prevent late resorption. Compared with the Müller ring, the Burch-Schneider APC is much more adapted to meet these requirements, particularly when the graft covers more than 50 p. 100 of the socket.