Knees Caving on Landing: Restructuring a Jump Unit Mid-Unit
You teach intermediate modern technique to 26 students in grades 9–12, meeting twice weekly for 90 minutes. The unit's culminating sequence is a traveling jump phrase - pas de bourrée, sauté in second, assemblé, and a two-foot landing held for two counts. In week two you observe that on landing, 9 of 26 students' knees track inward and their arches collapse; several land with locked knees and audibly heavy feet. One student, M., has a diagnosed hypermobility spectrum and habitually hyperextends elbows and knees to make shapes look "finished." Three students have mentioned shin or knee soreness in the past two weeks. The current 20-minute warm-up is static stretching and slow tendus at the barre. The showcase is five weeks away, and the full faculty will watch the final run.
1. What is the most likely cause of the landing errors, and how would you restructure the warm-up and jump progression over the next two weeks?
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Diagnosis. The pattern is mechanism-specific, not a motivation problem. Inward knee tracking with collapsing arches under landing load points to insufficient hip abductor and intrinsic foot control; locked-knee landings mean students are absorbing force at joint end range rather than through muscle. The warm-up explains part of it: static stretching and slow tendus do not prepare the neuromuscular system for impact, and 20 of 90 minutes spent there leaves little time for activation. Cuing is the third variable - if the class has been praised for "finished" lines, students will trade alignment for shape.
Restructure. Replace static stretching with a dynamic warm-up: foot doming and toe spreads (2×10), banded glute-med walks, single-leg balance with reach, hip-hinge patterning, then low-amplitude pogo hops progressing to 4×8 two-foot jumps in place with a two-count stick landing. Teach landing as a skill before adding travel: drop landings from a 6-inch box, cued externally ("land so we hear nothing," "push the floor away"), then add the pas de bourrée, then the sauté. Reduce amplitude before adding complexity; run the assemblé at half tempo with a partner giving a light touch at the hip for alignment feedback. Film one student per class so the class sees tracking rather than only hearing about it.
Timeline. Week 3: no full phrase. Week 4: phrase in two halves at 75 percent effort. Week 5: full run with a peer observer using a three-item checklist. Keep the last 10 minutes for a reset (rolling, calf and hamstring work), and give the three sore students a modified track with no jumps until they are symptom-free.
2. How would you differentiate for M. without singling her out, and what would you communicate to her family and the school nurse?
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Hypermobility is a different problem from the rest of the class, so one cue will not serve both. For M. the goal is strength at end range and a redefinition of what "finished" looks like.
In class. Meet privately and name the issue without framing it as a limitation: locking a joint loads ligament rather than muscle, and a long line can be held with active support. Give her a concrete personal rule - elbows and knees never fully straight in weight-bearing - rather than a vague "be careful." In the assemblé she lands in a slightly lower plié with the cue "reach long through the crown, keep the knees soft." Use the same general cue for everyone ("soft knees, tall spine") so corrections are not public and pointed.
Supplementary work. Five minutes twice weekly of hamstring eccentrics, calf raises, glute bridges, and slow controlled pliés. The strength deficit is exactly what makes hyperextension the path of least resistance; cueing alone will not fix it.
Communication. Email the family describing what you have observed and what you are doing, and ask whether she is seeing a physical therapist or physician and whether any restriction has been advised in writing - align the modification with medical advice rather than guessing. Copy the school nurse so the plan is in one place. If M. reports pain, she stops jump work that day; pain is the signal that overrides the plan, and the family should hear that from you before they hear it from her.
3. The showcase is in five weeks. What observable criteria would you use to decide the class is ready to perform the full sequence at full effort, and what is your fallback?
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Readiness should be judged against criteria, not the calendar, because the performance date is fixed and the tissue is not.
Three gates, each checked in class and recorded on a simple sheet.
- Landing mechanics: 8 consecutive two-foot landings from a low jump with knees tracking over the second toe, heels down within one count, and no audible thud. Pass at 7 of 8 clean.
- Fatigue resistance: the same task at the end of class, after the phrase, not only at the start. This is the condition under which injuries actually happen, so it is the condition that should be tested.
- Phrase accuracy at 75 percent effort: correct timing and spatial path in the first half of the phrase, with an observer calling alignment.
I would not require every student to pass - I would require the class median to meet gate 1 and the three sore students to be symptom-free before adding full effort.
Fallback. If the class is not there by week four, the showcase version substitutes a temps levé for the assemblé and keeps the pas de bourrée and the held landing. The choreographic intent and the performance criteria can still be met, and the sequence stays inside the students' control. Tell students the decision rule in advance so a modification reads as a professional judgment rather than a punishment or a last-minute failure. Announce the gate results as class data, not as individual verdicts, and keep a written record in case a parent asks why the choreography changed.