JR101 REVIEW QUESTIONS WITH CORRECT ANSWERS LATEST UPDATE 2026

JR101 REVIEW QUESTIONS WITH CORRECT ANSWERS LATEST UPDATE 2026 How many bones comprise the knee joint? - Answers 4 if you are standing and take your index finger and slide it down your thigh until it contacts the patella, the portion of the patella that you first contact is the - Answers base how many articulations exist within the knee joint excluding the fibula? - Answers 3 the knee joint is - Answers a modified hinge joint the knee joint is a modified hinge joint that is also a _____ joint - Answers synovial synovial pouches are also known as - Answers bursae the ligaments of the knee can be divided into two groups - Answers extracapsular/intraarticular (intracapsular) the patella ligament is (Intra/extra?) - Answers extracapsular the ACL is (intra/extra) - Answers intraarticular LCL is (intra/extra)? - Answers extracapsular T/F: the primary function of the quads is to flex the knee - Answers false T/F: the primary function of the hams is to flex the knee? - Answers True T/F: the hamstrings originate on the ischium and are posterior to the knee joint? - Answers true T/F: the hamstrings extend the thigh? - Answers true The hamstrings muscles include - Answers biceps femoris, semitendinosus and semimembranosous a commonly used musculoskeletal prefix which means cartilage is - Answers chondro a commonly used musculoskeltal prefix which means decreased is - Answers hypo a commonly used muscskeletal prefix for determining which means behind is - Answers retro a commonly used muscoloskeletal prefix for determining direction which means within - Answers intra a commonly used prefix for determining direction which means upon or on top is - Answers epi if a surgeon commented that a particular femoral condyle was hypertrophic, the condyle has - Answers increaed in size ipsilateral meaning - Answers same side another term used to describe internal rotation - Answers medial rotation if a patient presented with a proximal femoral neck fracture in the hip that was less than 120 degrees, the clincal description of the neck angle would be - Answers coxa-vera A surgeon is performing a total knee procedure. When the knee is flexed, he inserts a long IM rod down the tibial shaft to set up a proximal tibial cutting guide tower. In the flexed knee, the point of reference that describes the position of the tip of the far end of the rod down the tibial shaft in relation to the cutting block tower that is placed on the rod over the tibial eminence is: - Answers distal the thigh is what region of the body - Answers the region from the hip to the knee the leg is what region of the body - Answers the region from the knee to the ankle the appendicular skeleton is comprised of: - Answers pectoral girdles, the upper limbs, pelvic girdle, lower limbs a long bone is - Answers cylindrical in shape being longer than it is wide When we discuss bone changes in form and function due to mechanical stresses and the force of muscular tension placed on it, we are discussing: - Answers Wolffs Law the flexible connective tissue found on joint surfaces which allows joint surfaces to slide against one another is called - Answers cartilage Acl origin and insertion - Answers originates on the lateral femoral condyle and inserts on the anterior surface of the tibial platue (AL) T/F: the point of origin of a muscle is a location where a muscle can move - Answers False the arcs of flexion in the knee are - Answers screw home, functional and deep flexion the mechanical axis of the lower extremity is determined by drawing a straight line from: - Answers the center of the femoral head to the center of the ankle joint T/F: the anatomic axes in the lower extremity are represented by two mutually exclusive lines - Answers true When we refer to the the "functional axes" of the knee, we reference the combination of rotations around what two axes? - Answers The TEA of the femur and the longitudinal axis of the tibia The flexion-extension axis closely correspond the the insertion points of what two ligamentous soft tissue structures in the knee joint? - Answers MCL and LCL The "anatomical" or clinical axis the the knee is an imaginary line that connects - Answers the most prominent points of the medial and lateral epicondyles the "surgical" epicondylar axis is and imaginary line that connects - Answers the medial epicondylar sulcus with the prominence of the lateral epicondyle Which distal femoral condyle in the knee joint has a sulcus? - Answers medial Whitesides line is - Answers perpendicular to the surgical TEA The posterior condylar line: - Answers marks the outer surface boundaries of the posterior distal femoral condyles in flexion Whitesides line is also known as - Answers The trochlear A/P axis Where is Whitesides line drawn from? - Answers a line drawn from the deepest part of the trochlear groove posteriorly to the center of the intercondylar notch T/F: the normal human knee has medial pivot? - Answers true is the deep flexion arc passive or active? - Answers passive is the screw home arc of motion consdiered active or passive? - Answers passive the most important biomechanical function of the patella is to improve - Answers quadriceps efficiency T/F: the patella decreases the lever arm of the extensor mechanism of the knee joint - Answers false T/F: the tibial tubercle is not part of the extensor mechanism? - Answers false in the knee joint, the distance (in the saggital plane) between the quads force and the flexion extension axis of the knee can be reffered to as being a - Answers moment arm T/F: the triathlon CS tibial inserts are available in six thicknesses. they match the six thicknesses options that are available for the CR tibial insert - Answers false T/F: The TS inserts offer 3 more thickness options than the PS design does - Answers true T/F: there is no cementless PS femoral components? - Answers false the outer width of the PS box is - Answers 20.8mm on any triathlon PS femoral component, the PS box height is - Answers 20.5mm on any triathlon PS femoral component the PS box inner width is - Answers 16.2mm T/F: the triathlon TS femoral augments can be used with a triathlon primary PS cemented femoral component - Answers true T/F: the triathlon tibial augments are size specific and come in left M/L or right M/L configurations and can only be used with the universal baseplate - Answers true T/F: With respect to Triathlon's femoral component/tibial insert-baseplate compatibility, the size matching is one up and one down. A size 5 femur can be matched with an appropriate size 4,5,6 insert/baseplate. - Answers true T/F: the only baseplate with which the triathlon TS insert can be used is the cemented universal baseplate - Answers True T/F: with reference to Triathlons femoral component/tibial insert compatibility, a cemented PS femoral component can be used with a TS insert (with universal baseplate) - Answers true T/F: with reference to Triathlons femoral component compaitibility, a TS cemented femoral component can be used with a PS tibial insert - Answers True · T/F: on Triathlon primary CR/PS femoral components, the anterior dimension(from the lugs up...in the sagittal plane) increases less than or equal to 3.0mm from size 1 through and including size 7. - Answers true T/F: the triathlon cemented baseplate/univesal baseplate/ low-profile baseplate have an overall baseplate thickness of 3.2 mm - Answers True T/F: the trithalon primarybaseplate/universal baseplate/low-profile baseplate have an inner baseplate thickness of 2.4mm - Answers false - 1.9mm T/F: The cement mantle under the Triathlon primary cemented baseplate/universal baseplate/low-profile baseplate is 1.3mm. - Answers true T/F: The thickness of polyethylene when using a 9mm insert with the Triathlon primary cemented baseplate/universal baseplate/low-profile baseplate is 6.2mm. - Answers true · T/F: Regardless of tray size; the peg diameter on all Triathlon tritanium baseplates is 7mm. However, the peg lengths range in length from 7mm-12mm depending on the size of the baseplate. - Answers true t/f: The triathlon foam thickness on the underside of the triathlon tritanium baseplate is 1.75mm thick - Answers false - 1.14 mm Simplex P bone cement is manufactured in - Answers Limerick, Ireland T/F Simplex Bone Cement monomer and polymer/co-polymer powder (regardless of brand) are packaged in two sterile components; a sterile plastic pouch for the liquid monomer and a sterile glass ampule for the polymer/co-polymer powder since the powder is so sensitive to heat and light. - Answers False T/F the three ingredients in the Simplex P Bone Cement monomer are: methyl methacrylate (monomer), toulidine, and barium sulfate. - Answers False - Methylmethacrylate, N-dimethyl p - toulide and Hydroquinone?? The ingredient included in Simplex Bone Cement monomers (regardless of brand/type) to prevent premature polymerization is: - Answers hydroquinone T/F The ingredient in the monomer that initiates the chemical reaction (Producing heat) that lets the bone cement mixture consolidate at room temperature is toulidine. - Answers True T/F: the liquid component (monomer) of simplex P is sterilized by gamma radiation - Answers False T/F PMMA (polymethylmethalcrylate) represents 15% of the powdered ingredients used to prepare a dose of Simplex P Bone Cement. - Answers True T/F The numbers 75-15-10 refer to the percentages of the three ingredients that comprise the formula of the powder (polymer/co-polymer) for Simplex P Bone cement. - Answers True T/F the methyl methacrylate styrene copolymer ingredient in Simplex P Bone Cemenet powder contains 1.7% benzoyl peroxide. - Answers True T/F The powder component of the Simplex P Bone Cement formula is sterilized by gamma radaition? - Answers True After combining the liquid and powder ingredients of Simplex bone cement (regardless of brand or type) the resultant chemical reaction (with ref to heat generated by the mass) creating a polymeric formation of a soft, pliable, dough-like mass is best described as being: - Answers exothermic T/F Simplex P Bone Cement uses zirconium dioxide in its powdered ingredients. It is a contrast agent that allows the bone cement to be seen on x-ray. - Answers False - barium sulfate i beleive T/F Barium sulfate is an ingredient in the monomer of Simplex P Bone Cement that provides a radiopacity in the final prepared dosage. - Answers False T/F Simplex P Bone Cement is indicated for usage on certain types of pathological fractures. - Answers True T/F Although its fumes are not pleasant to inhale, the monomer utilized in mixing Simplex P Bone Cement is expressly engineered to be non-flammable. - Answers False T/F Regarding Simplex P Bone Cement; when preparing the ingredients for usage, data from in vitro studies have shown that monomer loss is related primarily to the duration of mixing and secondarily to the frequency of stirring the material. - Answers False The chemical process of heat being applied to a bone cement monomer is a co-polymer resulting in the formation of a dough-like mass that gradually hardens is called: - Answers polymerization T/F A bolus of Simplex P Bone Cement starts curing when it reaches a room temperature of 451 degrees F (232.7 C). As a result we can derive the term Fahrenheit 451, which is the temperature it takes to properly cure bone cement in the human body. - Answers False T/F Unexpired doses of Simplex P having different lot and or control numbers, can be used to prepare the material for surgical applications. - Answers True T/F When preparing a dose of Simplex P Bone Cement for surgical use, the liquid monomer component should be the initial ingredient placed in the mixing receptacle. - Answers False T/F After an implant (using Simplex P Bone Cement) has been positioned and impacted into the patient's prepared bone, the excess cement that extrudes from the implant should not be removed until the material has completely hardened. - Answers False The setting time of Simplex P Bone Cement can vary with the ambient temperature in the OR , which by definition does not include the temperature of the utensils, mixing and delivery equipment and the cement itself. - Answers False The recomended storage for Simplex P Bone Cement is a well lit and dry area, with a temperature between 43 F and 74 F. - Answers False T/F Simplex P w Tobramycin has the same powdered formula as Simplex P except for the addition of Tobramycin - Answers True T/F Simplex P Tobramycin has a different liquid (monomer) formula as Simplex P Bone Cement so that it will not compromise the medicinal effect of the antibiotic powder. - Answers False How much Tobramycin (in grams) is in one 40g dose of Simplex P Bone Cement with Tobramycin? - Answers 1 gram Simplex P with Tobramycin is indicated for the fixation of prostheses to living bone in the first (when the implants are removed) stage of a two-stage revision arthroplasty. - Answers False The second stage of a revision arthoplasty protocol is: - Answers A procedure that is performed at a suitable time after an infected implant has been removed (first stage), the pre-existing infection in the patient has been cleared, and new implants are to be reintroduced to the surgical site. T/F Simplex HV Bone Cement uses zirconium dioxide in its powdered ingredients. It is a contrast agent that allows the bone cement to be seen on x-ray. - Answers True T/F 82.6% of Simplex HV's powder is comprised of the ingredient: poly (methacrylate/methylmethacrylate). - Answers True T/F Simplex HV powder has a higher concentration of benzoyl peroxide that Simplex P Bone cement powder. - Answers False T/F Both Simplex P with Tobramycin and Simplex HV with Gentamycin have 1 gram of antibiotic per dose. - Answers False - Genta is .5 g How many product offerings (individual brands) are available in the Simplex family of bone cements? - Answers 5 T/F Irradiation of UHMWPE helps generate cross-linking of the molecules within the material. - Answers TRue T/F: Strykers first annealed PE was duration - Answers True T/F: X3 is annealed at 135 degrees Celsius - Answers False - 130 degrees